LS1s and the car wash - or something else?
08-14-2012, 01:40 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
LS1s and the car wash - or something else?
Curious if anyone has had issues taking their LS1 car through an automated car wash.
I've taken mine through many times, different places, without issue. This morning I took the LS1/4L60E car through the same one I last took it through to wash off the stuff from the track from last weekend. This car wash has an undercarriage wash, and as I was driving across that, the engine seemed to change tone a little. This car wash is the type where you drive to the middle and stop, and the machine goes back & forth across the car. Interestingly, the machine stopped a couple of times in the middle of a cycle, which I haven't seen it do. Anyway, I had the engine off while it did its thing, when it was finished I started it back up, then drove it through the dryer.
After that I stopped at the storage unit a couple of blocks away to unload the track stuff, shut it off while I was there, started right back up.
Next stop was the post office to mail some stuff, just did the curb drop box thing, then headed for work. About two miles later, while sitting at a light, the engine coughed, recovered, then died. I started it back up, which it did right away, the light turned green, and I took off. About a quarter of a mile later, it started bucking, the tach dropped and recovered, then it bucked & coughed, and died. No SES light until it died. I let it roll to a stop on the shoulder of the road, got out to check it over.
It would spin over fine, but no fire. I happened to have a multimeter with me, couldn't find anything wrong. Nothing under the hood seemed to be wet. I demated and remated as many connections as I could take apart without tools, same thing. Fussed with the fuses and relays, again nothing found. I could hear the fuel pump when I turned the ignition on, and there was pressure at the fuel rail fitting. I suspected the MSD LSX 2-step (I had a MSD box fail me in the '57 when it got wet - in the same car wash, as a matter of fact), so took it of the circuit and tried again, no dice. So, I called my son to bring the truck and tow me home.
While I was waiting a state patrolman came by and stopped. I told him what happened, he said their cars (Dodges) would sometimes do the same thing after going through the car wash. I told him help was on the way, he was okay with that and took off.
My son finally arrived about an hour after it had quit. I tried it again just to be sure, it still wouldn't fire. We hooked up the tow rope and took off. As we were rolling down the street about 2 blocks from where it died, just for kicks I tried starting it and it fired right up. I called him on his cell phone, we pulled over and unhooked, I took off for work and he took off for home. ~5 miles to work, mostly highway speeds with a couple of lights, not a hiccup. Parked at work, shut it off, put up the windshield shade, tried starting it again, fired right up.
About the only thing I can think of that could be affected by the undercarriage wash, which is the only thing I can think that would have caused this other than a completely random failure, is the crank sensor.
So, anyone else had this happen, or heard of something like it?
I've taken mine through many times, different places, without issue. This morning I took the LS1/4L60E car through the same one I last took it through to wash off the stuff from the track from last weekend. This car wash has an undercarriage wash, and as I was driving across that, the engine seemed to change tone a little. This car wash is the type where you drive to the middle and stop, and the machine goes back & forth across the car. Interestingly, the machine stopped a couple of times in the middle of a cycle, which I haven't seen it do. Anyway, I had the engine off while it did its thing, when it was finished I started it back up, then drove it through the dryer.
After that I stopped at the storage unit a couple of blocks away to unload the track stuff, shut it off while I was there, started right back up.
Next stop was the post office to mail some stuff, just did the curb drop box thing, then headed for work. About two miles later, while sitting at a light, the engine coughed, recovered, then died. I started it back up, which it did right away, the light turned green, and I took off. About a quarter of a mile later, it started bucking, the tach dropped and recovered, then it bucked & coughed, and died. No SES light until it died. I let it roll to a stop on the shoulder of the road, got out to check it over.
It would spin over fine, but no fire. I happened to have a multimeter with me, couldn't find anything wrong. Nothing under the hood seemed to be wet. I demated and remated as many connections as I could take apart without tools, same thing. Fussed with the fuses and relays, again nothing found. I could hear the fuel pump when I turned the ignition on, and there was pressure at the fuel rail fitting. I suspected the MSD LSX 2-step (I had a MSD box fail me in the '57 when it got wet - in the same car wash, as a matter of fact), so took it of the circuit and tried again, no dice. So, I called my son to bring the truck and tow me home.
While I was waiting a state patrolman came by and stopped. I told him what happened, he said their cars (Dodges) would sometimes do the same thing after going through the car wash. I told him help was on the way, he was okay with that and took off.
My son finally arrived about an hour after it had quit. I tried it again just to be sure, it still wouldn't fire. We hooked up the tow rope and took off. As we were rolling down the street about 2 blocks from where it died, just for kicks I tried starting it and it fired right up. I called him on his cell phone, we pulled over and unhooked, I took off for work and he took off for home. ~5 miles to work, mostly highway speeds with a couple of lights, not a hiccup. Parked at work, shut it off, put up the windshield shade, tried starting it again, fired right up.
About the only thing I can think of that could be affected by the undercarriage wash, which is the only thing I can think that would have caused this other than a completely random failure, is the crank sensor.
So, anyone else had this happen, or heard of something like it?
08-14-2012, 08:25 PM
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re: LS1s and the car wash - or something else?
Had misfires at mid rpm to upper after pressure washing the engine, but being carbed I unintentionally probably gor water in the ignition box.
08-20-2012, 06:05 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A little more information:
That evening on the way home, about 2 miles from work, going up a slight grade, it gave one stumble, then picked back up like nothing happened. It was fine the rest of the week.
Friday mid-day I took it to the track for Super Chevy. I planned on doing the test sessions (3 passes promised), a "bonus race" (basically a jackpot race), and a special "LS Shootout" class. It was about 2 hours between driving there and the first pass, and it was a relatively cool day, so it had plenty of time to cool down. For the first test session, it seemed normal until I got to about half track, then started backfiring and shutting down - I expected a high 12.9 to low 13.0 ET at 103 mph, ran a blazing 15.6 at 58 mph. And died in the shutdown, thought I was going to have to be pushed off the track. But, I turned the ignition to off, tried starting it again, and it fired up. Went back to the pits, looked everything over as best I could, didn't find anything. On a whim, unwrapped the fuel sending harness where I spliced it into the chassis harness (including a new wire for the fuel pump) - bingo! The fuel pump power wire was loose in the crimp. Put in a new connector, recrimped nice & tight, waited for the next pass.
...which again was 2 hours later. Again, plenty of time to cool off. No problem with the burnout, staged, take off, seemed okay at first, then started cutting out and backfiring off & on in the last half of the track. At least this time it was a 13.4 @ 100 mph. I thought maybe the fuel pump had caused some sort of vapor plug issue in the fuel system, so I waited for the last test session.
Last time trial pass was 3 hours later, after sunset, it is really cooled off. No problem during the burnout or staging; when the lights came down it gave a mighty fart at the hit and basically stumbled down the track for a 25 second pass. I restarted it twice going down track. At this time I had no clue. No SES light, no trouble codes set. My choices were go home, or see if there was a chance the person I lined up next to would redlight.
I decided on Door #2. It was about half an hour since the last pass, cooled down like "normal" at the track (intake cool, block warm). I was lined up with a mid-13 sec car, so I put 13.5 on the window, figuring it had at least run that once. Well, he red lit, so I stumbled down track to a 17.9 sec pass. At least it didn't die that time.
The LS Shootout was right after that, so I went back to the staging lanes. About the only things I could figure were an intermittent sensor, or the MSD LS 2-step, so I took the 2-step out of the system in the staging lanes (even though by-passing the 2-step hadn't made any difference when it stopped on the side of the road). 15 minutes since the last pass. The car I'm lined up with red lights, I take off, and it sprints down track like it hasn't all day - it must be the stupid 2-step! Then at about 1000' it starts cutting out again, but at least runs a 13.2.
So, I leave the 2-step out and go back for the 2nd round of the bonus race. I leave the 13.5 on, not knowing exactly what it'll do. I'm paired with a 10-sec Nova and a pretty good racer. Half an hour since the last pass. It runs great through 1000', I let completely off the throttle and coast to the finish, he doesn't catch me, but I break out with a 13.41.
So, I go back for the 2nd round of the LS Shootout. I don't bother trying to cool it down like I normally do. They run the 3rd round of the Bonus race before us, so it's 45 minutes since the last pass. Lower the dial-in to 13.2. I'm paired with a Vette dialed 13.89. We both get green lights but his RT is much worse than mine and he doesn't run his number, I back off to a 13.28 and a win. No hiccup at all on the pass.
Go back for the Shootout semi-finals, paired with another Vette except this one dials 11.09; 12 minutes since the last pass. I take off, shift to 2nd, and my win light comes on. He red lit with a -.002, so I run it out, not a hiccup to a 13.07 @ 104.6 MPH. Now it's running like it should, except that it's hot so not quite as quick as I would expect.
Go right back for the final round, paired up with a stock 2000 LS1/4L60E Camaro, he dials 14.82, I stay with the 13.1 because I'm not cooling the car down. 9 minutes since the last pass. We both go green, he stays ahead of me so I back off just before the strip for a double break out, him with a 14.70 and me with a 13.03 so the win light comes on in my lane.
Okay, that's a lot of detail...
In the staging lanes for the 2nd round of the bonus race, I talk to a fellow racer with a 2001 Camaro LS1/4L60E. He had told me about a problem he had last year, so I tried to pick his brain. The car wouldn't start for him one day, so he let it sit for a couple days, came back and it started up. Later it wouldn't start. Had various shops look at it, couldn't find anything, no trouble codes. They did change the crank sensor since they weren't getting a signal during no-start cranking, but it didn't change anything. Finally on an internet search, found someone who said f-body LS1's have had crank sensor signal wire breaks within the harness (hadn't been seen with Vettes or GTO's or trucks). His brother runs a repair shop, he got the pin-out data and ran a new wire for the crank sensor signal, and the problem hasn't shown up since.
I'd suspect that is my problem, but it doesn't make any sense that it would only show up under power, and when the engine is cool. I drove it to work today, acted like nothing is wrong.
Sorry for the long story, but I thought it best to give as much detail as possible. I'm leaning toward the crank sensor itself, but wouldn't count out a harness issue.
Oh, what I brought home:
If someone had told me I'd be taking that home when I lined up for the first round, I would have laughed in their face.
That evening on the way home, about 2 miles from work, going up a slight grade, it gave one stumble, then picked back up like nothing happened. It was fine the rest of the week.
Friday mid-day I took it to the track for Super Chevy. I planned on doing the test sessions (3 passes promised), a "bonus race" (basically a jackpot race), and a special "LS Shootout" class. It was about 2 hours between driving there and the first pass, and it was a relatively cool day, so it had plenty of time to cool down. For the first test session, it seemed normal until I got to about half track, then started backfiring and shutting down - I expected a high 12.9 to low 13.0 ET at 103 mph, ran a blazing 15.6 at 58 mph. And died in the shutdown, thought I was going to have to be pushed off the track. But, I turned the ignition to off, tried starting it again, and it fired up. Went back to the pits, looked everything over as best I could, didn't find anything. On a whim, unwrapped the fuel sending harness where I spliced it into the chassis harness (including a new wire for the fuel pump) - bingo! The fuel pump power wire was loose in the crimp. Put in a new connector, recrimped nice & tight, waited for the next pass.
...which again was 2 hours later. Again, plenty of time to cool off. No problem with the burnout, staged, take off, seemed okay at first, then started cutting out and backfiring off & on in the last half of the track. At least this time it was a 13.4 @ 100 mph. I thought maybe the fuel pump had caused some sort of vapor plug issue in the fuel system, so I waited for the last test session.
Last time trial pass was 3 hours later, after sunset, it is really cooled off. No problem during the burnout or staging; when the lights came down it gave a mighty fart at the hit and basically stumbled down the track for a 25 second pass. I restarted it twice going down track. At this time I had no clue. No SES light, no trouble codes set. My choices were go home, or see if there was a chance the person I lined up next to would redlight.
I decided on Door #2. It was about half an hour since the last pass, cooled down like "normal" at the track (intake cool, block warm). I was lined up with a mid-13 sec car, so I put 13.5 on the window, figuring it had at least run that once. Well, he red lit, so I stumbled down track to a 17.9 sec pass. At least it didn't die that time.
The LS Shootout was right after that, so I went back to the staging lanes. About the only things I could figure were an intermittent sensor, or the MSD LS 2-step, so I took the 2-step out of the system in the staging lanes (even though by-passing the 2-step hadn't made any difference when it stopped on the side of the road). 15 minutes since the last pass. The car I'm lined up with red lights, I take off, and it sprints down track like it hasn't all day - it must be the stupid 2-step! Then at about 1000' it starts cutting out again, but at least runs a 13.2.
So, I leave the 2-step out and go back for the 2nd round of the bonus race. I leave the 13.5 on, not knowing exactly what it'll do. I'm paired with a 10-sec Nova and a pretty good racer. Half an hour since the last pass. It runs great through 1000', I let completely off the throttle and coast to the finish, he doesn't catch me, but I break out with a 13.41.
So, I go back for the 2nd round of the LS Shootout. I don't bother trying to cool it down like I normally do. They run the 3rd round of the Bonus race before us, so it's 45 minutes since the last pass. Lower the dial-in to 13.2. I'm paired with a Vette dialed 13.89. We both get green lights but his RT is much worse than mine and he doesn't run his number, I back off to a 13.28 and a win. No hiccup at all on the pass.
Go back for the Shootout semi-finals, paired with another Vette except this one dials 11.09; 12 minutes since the last pass. I take off, shift to 2nd, and my win light comes on. He red lit with a -.002, so I run it out, not a hiccup to a 13.07 @ 104.6 MPH. Now it's running like it should, except that it's hot so not quite as quick as I would expect.
Go right back for the final round, paired up with a stock 2000 LS1/4L60E Camaro, he dials 14.82, I stay with the 13.1 because I'm not cooling the car down. 9 minutes since the last pass. We both go green, he stays ahead of me so I back off just before the strip for a double break out, him with a 14.70 and me with a 13.03 so the win light comes on in my lane.
Okay, that's a lot of detail...
In the staging lanes for the 2nd round of the bonus race, I talk to a fellow racer with a 2001 Camaro LS1/4L60E. He had told me about a problem he had last year, so I tried to pick his brain. The car wouldn't start for him one day, so he let it sit for a couple days, came back and it started up. Later it wouldn't start. Had various shops look at it, couldn't find anything, no trouble codes. They did change the crank sensor since they weren't getting a signal during no-start cranking, but it didn't change anything. Finally on an internet search, found someone who said f-body LS1's have had crank sensor signal wire breaks within the harness (hadn't been seen with Vettes or GTO's or trucks). His brother runs a repair shop, he got the pin-out data and ran a new wire for the crank sensor signal, and the problem hasn't shown up since.
I'd suspect that is my problem, but it doesn't make any sense that it would only show up under power, and when the engine is cool. I drove it to work today, acted like nothing is wrong.
Sorry for the long story, but I thought it best to give as much detail as possible. I'm leaning toward the crank sensor itself, but wouldn't count out a harness issue.
Oh, what I brought home:
If someone had told me I'd be taking that home when I lined up for the first round, I would have laughed in their face.
Last edited by five7kid; 08-23-2012 at 12:04 AM.
08-21-2012, 09:22 AM
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Re: LS1s and the car wash - or something else?
Only time ive ever had issues like this were battery cable related. Add a bunch of grounds too
08-21-2012, 09:44 AM
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Re: LS1s and the car wash - or something else?
^ Guess I should have mentioned my wash experience. Lots of LS powered vehicles and im a clean freak. Been through so many times I couldnt count but I wash at least once per week usually twice and in the winter? Everytime I go out ( have seasons pass ) and I only go to under car wash types ( the big ones and I get the superworks etc ) Never once had a blip of an issue with moisture on LS anything. In fact ive never had an issue with anything wiring related using weather pack or metri-pak systems whether that be in boats or sleds or other harsh climate uses.
08-21-2012, 01:50 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I checked the cables and grounds, no problems. I have all of the factory LS1 grounds plus one 3rd gen ground.
As I was picturing the crank sensor replacement task, I remembered a detail that had skipped my mind. When I got the engine/trans/PCM/harness as a drop-out, that harness had gotten a bit toasted by the 4th gen headers (which I neither got nor saw). I was a little concerned before I first started it up, but after that pretty much forgot about it.
I'm getting a new sensor and connector with leads. Might as well cover both bases.
As I was picturing the crank sensor replacement task, I remembered a detail that had skipped my mind. When I got the engine/trans/PCM/harness as a drop-out, that harness had gotten a bit toasted by the 4th gen headers (which I neither got nor saw). I was a little concerned before I first started it up, but after that pretty much forgot about it.
I'm getting a new sensor and connector with leads. Might as well cover both bases.
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08-21-2012, 01:59 PM
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Re: LS1s and the car wash - or something else?
I checked the cables and grounds, no problems. I have all of the factory LS1 grounds plus one 3rd gen ground.
As I was picturing the crank sensor replacement task, I remembered a detail that had skipped my mind. When I got the engine/trans/PCM/harness as a drop-out, that harness had gotten a bit toasted by the 4th gen headers (which I neither got nor saw). I was a little concerned before I first started it up, but after that pretty much forgot about it.
I'm getting a new sensor and connector with leads. Might as well cover both bases.
As I was picturing the crank sensor replacement task, I remembered a detail that had skipped my mind. When I got the engine/trans/PCM/harness as a drop-out, that harness had gotten a bit toasted by the 4th gen headers (which I neither got nor saw). I was a little concerned before I first started it up, but after that pretty much forgot about it.
I'm getting a new sensor and connector with leads. Might as well cover both bases.
Smelly....
08-21-2012, 02:36 PM
#9
Re: LS1s and the car wash - or something else?
I had a similar situation. It ended up being my fuel pump ground connection. It was shady and would only crap out occasionally. And sometimes only enough to shut the car down, then would let me fire it back up.
Im running factory 4th gen tank wiring configuration, so the ground is under the back seat. I doubt too many folks have that same issue..
Point is those grounds can be pesky pains in the butt. No matter where they are. Wiring in general can be a hassle. There are so many more wires on these cars that its challenging to track it all down. Espcially without a SES code.
Hopefully your CPS wiring takes care of it! Just fixed my mom's 2003 Grand Cherokee last week. It was throwing an IAC code. New sensor for the third time, tried new PCM, continuity tests on the wiring. Everything checked... Replaced about 18" of wire from the IAC plug back...viola. Problem gone.
J.
Im running factory 4th gen tank wiring configuration, so the ground is under the back seat. I doubt too many folks have that same issue..
Point is those grounds can be pesky pains in the butt. No matter where they are. Wiring in general can be a hassle. There are so many more wires on these cars that its challenging to track it all down. Espcially without a SES code.
Hopefully your CPS wiring takes care of it! Just fixed my mom's 2003 Grand Cherokee last week. It was throwing an IAC code. New sensor for the third time, tried new PCM, continuity tests on the wiring. Everything checked... Replaced about 18" of wire from the IAC plug back...viola. Problem gone.
J.
08-21-2012, 03:14 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
One reason the fuel pump doesn't make sense is when it stopped on the side of the road, I could hear the fuel pump come on when I turned the key on, and I had fuel pressure at the rail (don't know how much, just that it squirted out with authority when I depressed the valve with a key), when it wouldn't start.
The other reason is how dead it was when it quit while going down the track. Like turning off the key (except for the {very} loud backfire).
Only thing I don't understand is why full power caused it, and then typically only while cold. One possibility that has crossed my mind is excessive crank thrust moving the trigger plate away from the sensor. I'll see if I can move the crank when I have it up in the air for the sensor/connector fix.
The other reason is how dead it was when it quit while going down the track. Like turning off the key (except for the {very} loud backfire).
Only thing I don't understand is why full power caused it, and then typically only while cold. One possibility that has crossed my mind is excessive crank thrust moving the trigger plate away from the sensor. I'll see if I can move the crank when I have it up in the air for the sensor/connector fix.
Last edited by five7kid; 08-21-2012 at 06:05 PM.
08-21-2012, 03:19 PM
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Re: LS1s and the car wash - or something else?
congrats on the trophy
my sister tried to record your run to see if it would help you figure it out. i watched the video and it appeared to be the run it ran ok.
my sister tried to record your run to see if it would help you figure it out. i watched the video and it appeared to be the run it ran ok.
08-21-2012, 04:11 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yeah, what's with that???
In the past I've posted in the regional forum about upcoming events like Super Chevy, and the response I got was crickets. I wasn't thinking I'd be there myself this year (going up Friday was a last minute decision), so I didn't say anything.
Mike, if what she recorded was anything after the first round of eliminations, there wouldn't be anything to see.
In the past I've posted in the regional forum about upcoming events like Super Chevy, and the response I got was crickets. I wasn't thinking I'd be there myself this year (going up Friday was a last minute decision), so I didn't say anything.
Mike, if what she recorded was anything after the first round of eliminations, there wouldn't be anything to see.
08-21-2012, 05:55 PM
#14
Re: LS1s and the car wash - or something else?
Oh yeah... It didnt sound like the FP was your issue. I was just citing my own gremlin and making the point that even the smallest ground can throw a wrench in the works.
Anxious to hear if the crank sensor fixes ya up!
J.
Anxious to hear if the crank sensor fixes ya up!
J.
08-21-2012, 06:14 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Given that it hasn't acted up since the first round of eliminations Friday night, including driving to work and running errands the last two days, I'm not sure what "test" is going to prove it's no longer a problem. Maybe if it behaves at the track this coming Friday.
08-22-2012, 11:38 PM
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Car: 82 Berlinetta/57 Bel Air
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Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Photobucket is acting up, so I'll try to host here.
The crank sensor wires had been toasted in the donor car. Why I didn't address this when the engine was out of the car - no excuses, I just didn't.
The tape over the wires was melted into them. The insulation on the three wires had melted together. There were several cracks that exposed all three wires.
I chopped off that part, spliced in the pigtail.
The crank sensor wires had been toasted in the donor car. Why I didn't address this when the engine was out of the car - no excuses, I just didn't.
The tape over the wires was melted into them. The insulation on the three wires had melted together. There were several cracks that exposed all three wires.
I chopped off that part, spliced in the pigtail.
Last edited by five7kid; 08-22-2012 at 11:59 PM.
08-22-2012, 11:44 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Hopefully, we won't have to address this again.
I had to drop the starter, and it hasn't been the purest while I've had the car running (it has a tag on it that indicates it isn't factory), so I went to get a new one. But, the closest store didn't have one in stock, so it'll be in tomorrow. I didn't feel like installing the starter just to start it once, then remove it, so I quit for the night.
There probably isn't anything wrong with the crank sensor, but I went ahead and replaced it, anyway. The new sensor and pigtail are AC Delco parts.
I had to drop the starter, and it hasn't been the purest while I've had the car running (it has a tag on it that indicates it isn't factory), so I went to get a new one. But, the closest store didn't have one in stock, so it'll be in tomorrow. I didn't feel like installing the starter just to start it once, then remove it, so I quit for the night.
There probably isn't anything wrong with the crank sensor, but I went ahead and replaced it, anyway. The new sensor and pigtail are AC Delco parts.
Last edited by five7kid; 08-23-2012 at 12:11 AM.
08-23-2012, 06:46 AM
#18
Re: LS1s and the car wash - or something else?
Well that certainly didnt look like it was doing you any favors hahaha. Ought to help things for sure.
I always annoyed me that parts stores rarely carry the starter for these motors. They're everywhere now. When I was slinging parts for Harry..er..I mean Autozone, we never had one in stock for any LS style motor. Baffling haha.
J.
I always annoyed me that parts stores rarely carry the starter for these motors. They're everywhere now. When I was slinging parts for Harry..er..I mean Autozone, we never had one in stock for any LS style motor. Baffling haha.
J.
08-23-2012, 09:10 AM
#19
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Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
Re: LS1s and the car wash - or something else?
hrmmm, maybe I should be looking at my harness since I'm having a similar issue
08-23-2012, 12:08 PM
#20
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
They do have a starter for the vehicle my 6.0l came out of, but not for the LS1 Camaro. What the difference is, I don't know. But, they called and have the LS1 starter in now, so I'll pick it up after work. It was $25 difference (12.5%) between a rebuilt and new, so I went for the new one. The part that bothered me with the one I have is the back of the solenoid is loose, such that it moves when tightening a wire on a terminal. But, they don't carry just the solenoid.
It's also a little annoying that the crank sensor pigtail wasn't color coded. It wasn't hard to figure out, but it was an AC Delco part for this application - go figure.
It's also a little annoying that the crank sensor pigtail wasn't color coded. It wasn't hard to figure out, but it was an AC Delco part for this application - go figure.
08-24-2012, 12:12 AM
#21
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Got the starter mounted up and all the wires hooked back up. It fired and died twice, then kept running on the 3rd try. Took it out for a run, no problems with what I could do on the street. Guess we'll see if it behaves at the track tomorrow night.
08-24-2012, 01:31 PM
#22
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Oh, no detectable excessive crank thrust.
And, I didn't have to go through CASE relearn with the new crank sensor. Actually, it didn't have any problem with this shortblock when I put it in last year.
And, I didn't have to go through CASE relearn with the new crank sensor. Actually, it didn't have any problem with this shortblock when I put it in last year.
08-25-2012, 01:08 AM
#24
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I have HP Tuners, but didn't have the laptop out with me that day. And, I haven't started data logging yet (still sorting out other things - and, need to figure out how to do it... 
).
At the track tonight (my son was running it), it ran perfect. So, I'm pretty sure the toasted crank sensor harness was the culprit.
).At the track tonight (my son was running it), it ran perfect. So, I'm pretty sure the toasted crank sensor harness was the culprit.
08-25-2012, 01:34 PM
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Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: LS1s and the car wash - or something else?
I had a similar issue. Random extended crank times, sporadic bucking/dying while driving and flooding of the cylinders. Crank sensor connector had broken a retention tab and one of the pins was backing out. Sucked to diag. Wish I checked this forum more often I would've told you to check the ckps last week! 
08-27-2012, 06:50 PM
#26
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Well, even in my original post, I suspected the crank sensor. The part I didn't remember until later was the toasted wires when I first installed the engine.
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