afgun

Looks like I'm not getting reference pulses. When the starter is engaged, it fires, but when I let off the key it doesn't fire.

Frustrating. Tried a different chip with no luck.

I've got a <A HREF="http://www.phoenix.org/firebird/gta/nostart3.gdf">GDF file</A> to look at.

This is a frustrating problem. In the past I've swapped the relays when I got stuck because I thought that it was a MAF problem, but it looks like I'm getting MAF values.

Help?

Thanks!

--andrew


[This message has been edited by afgun (edited July 22, 2001).]

Grumpy

I don't see where the injectors even tried to fire.
At a glance looks like a VATS problem.
How'd it start at 3,200 rpm?.
Has a Gms/sec., so MAF is at least awake.
Module, ecm?, got a spare ecm to try?
Fuses all good?.

89vette

Grumpy, 3188 is the value diplayed when linked and while cranking. since I just had a similar problem, I may be able to help. Questions.

Key "on" not running. Do you have a steady SES light?

Do you have spark while crnaking? (Id guess no)
Are your injectors pulsing? (id guess no also)

Your car is doing some different things than mine when I would not start. First, your fuel pump is shutting off, unless I am seeing the start cycles. How many times during that GDF did you try to start it? Second, your coolant fan is turning on with a cold motor. That is wierd too. Is your ECM in Diagnostic (limp home) mode? If you set Diacom to Diagnostic, key on, does it link? Does the fan come on and the SES blink?

You seem to be getting intermittant data from the ECM uless like I said, I'm looking at a few key cycles. Well get it figured out. For what its worth, my problem was a bad distributor coil.

Jason

afgun

> Key "on" not running. Do you have a steady SES light?

Yes

> Do you have spark while crnaking? (Id guess no)

Yes

> Are your injectors pulsing? (id guess no also)

I thought so. I need to test. It kicks like it's going to catch while I'm cranking but sputters and dies when I let off of the key.

> Your car is doing some different things than mine when I would not start. First, your fuel pump is shutting off, unless I am seeing the start cycles. How many times during that GDF did you try to start it?

Several. I'll get some better data tonight.

> Second, your coolant fan is turning on with a cold motor. That is wierd too. Is your ECM in Diagnostic (limp home) mode?

Shouldn't be. I had an ARAP with the N/O bit for fans set. I corrected that. Going to try a new chip with VATS disabled too, just to see.

> If you set Diacom to Diagnostic, key on, does it link?

Didn't try that.

> Does the fan come on and the SES blink?

Or that, but it did when I used a paperclip to jumper the diagnostic pins.

> You seem to be getting intermittant data from the ECM uless like I said, I'm looking at a few key cycles.

Problem is, Diacom and Moates seemed to not save all of my data! I'm not sure if I'm getting intermittent data, but it seemed to update a couple times a second.

Thanks!

--andrew

afgun

Argh.

It appears to be a bad ECM now.

Fan on when the ECM powers on. No diagnostic flashes when I ground the connector.

If I push on the memcal I can get it to flash code 12.

It starts now, and the SES light remains lit. Runs rough, looks like limp mode (have to feather the throttle to get it to rev, etc...) I verified this by starting it with no prom inserted, and it ran exactly the same. I tried 3 different chips.

Anyone have a 165 that I can borrow/buy to test this with? I'm not ready to do the 730 swap yet.

Thanks!

--andrew


[This message has been edited by afgun (edited July 23, 2001).]

afgun

Ok, got my new ECM, still fan on. Did some investigation and discovered that my calpack had a bent female pin in it. Fixed that and dropped the chip in, put it back in and now
I no longer get a fan-on and I get ALDL data.

The no-start problem is still there.

When I crank, it cranks a second or two like others with ARAP have experienced, then it catches. I let off the key and it dies.

The security light is not on, so it's not a VATS problem. My Diacom session confirms this also. I have ALDL data.

When I first key on I hear the fuel pump run. My FP gauge is not working right now, so I think that's one of the next steps.

I've tried disconnecting the MAF to see if it's a bad MAF, but the same symptom persists.

This is starting to get frustrating!

I have a couple of .csv files from Diacom of attempting to start the car now.

<A HREF="http://www.phoenix.org/firebird/gta/nostart6.csv">http://www.phoenix.org/firebird/gta/nostart6.csv</A>
<A HREF="http://www.phoenix.org/firebird/gta/nostart7.csv">http://www.phoenix.org/firebird/gta/nostart7.csv</A>

One interesting thing is that Diacom records a 0.0 ms injector pulse width. The fuses are good. Why am I getting no pulse? I've tried 2 different chips, the one that worked previously but had occasional problems, and my new slightly modified (no EGR, swapped fan bit) ARAP.

Help?

leirch

While cranking, try giving it a little gas WHILE cranking, when you notice it start to catch. Give it some gas, off and on. Mine does that sometimes?
But only after running.. Hmmm, I'm not sure.

------------------
1987 IROC-Z L98,SR,EB 6085's,LPE 219/219 SR Cam, Crane 1.6RR, EB TPI Base, 58mm TB, Stock T5, 30lb SVO, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, Aluminum DS, 94 Disk Rear, Adjustable Prop Valve, Precision 3.73 Gears, Weld in Sub-Frame Connectors, Hotchkis LCA's, KYB Shocks/Struts, Poly Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm, Big stereo, 730SD Conversion.

To see the ROC, Check out the webpage Here

afgun

I just had one of those insights. Popped my APYU stock chip back in and WOW it starts right up. Something's obviously wrong with my modified ARAP chip.

I'm going to start with a stock arap and tweak just one thing at a time from there.

One thing that maybe? is causing my 0ms IPW is my fuel injector constant... winbin has a single fire FI size and double fire FI size... I set them both to 25.02 (hex 0x0196) Was that a boo-boo? I'm running ford motorsports 24# injectors.

afgun

Well, stock ARAP and one modified with just the N/O fan bit set both work. My memcal has a little problem though. The fingers inside have an occasional no contact with the pins on the ecm. Guess I need a new one. Anybody have a V8 '165 memcal? And a piggyback connector?

Guess I'm back in business. Thanks for the suggestions!