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Forum: V6
10-05-2019, 11:06 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi Six Shooter
this was my assumption (see earlier in the post) but there is a large doubt. Strange thing is that the app is using the A020 adx file which is in principle commonly used.
The app in...
Forum: V6
09-30-2019, 11:18 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi six shooter,
I'm using the aldl Bluetooth scan from 1320 electronics and the A020 file. Whatetever the software on the phone (aldl droid or aldl scan tool) I read the same value.
Forum: V6
09-29-2019, 12:07 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi all
I've finally bought a remanufactured ECM to make some test and try to solve the wrong temp reading. Unfortunately the new ECM gives exactly the same values !
I don't have any issue on the...
Forum: V6
06-14-2019, 01:59 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi WEG
thanks for your long and detailed answer :goodjob: I will definitely go through some of your links and especially the one from Moates which seems to be clearly the bible on everything...
Forum: V6
06-11-2019, 02:33 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Thanks:thanks:
Forum: V6
06-11-2019, 02:15 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi WEG
you're right my concern is that the ECU is not using the right temp. Not only for the fan but also for the injection parameters (opening time, timing…).
I will try probably try a...
Forum: V6
06-10-2019, 01:15 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi have disconnected the two large connectectors on the ECM and look for bad contacts. Everything is fine, used some contact cleaner in case. Still the same issue.
In any case if there was a...
Forum: V6
06-09-2019, 10:56 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

I've down a lot of test today and it seems for me the scan tool has a calibration error.
What I've down :
- check of the electrical continuity of the circuit from the ECM (C10 to D13)
- check of...
Forum: V6
06-09-2019, 10:47 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

According to the service manual the fan should start when the temperature reaches around 223°F and stay on for 30s.
If the ECM fails the override switch will start the fan.
Forum: V6
06-08-2019, 06:59 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

I've tried to use a calibrated resistor in replacement of the coolant sensor to see where the problem is coming from. With a 240 Ohms I should read a temperature of 195°F where I have in fact 160°F....
Forum: V6
06-07-2019, 01:26 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

I have checked all the connections and everything is fine. Used cleaning fluid in all connectors just in case. I am wondering if it's not a bad information from the aldl scan ?
Forum: V6
06-07-2019, 09:49 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

I've checked the gauge and it's fine. When the thermostat opens at 198°F, the gauge is given the right temp but the ECM tells a temperature around 160°F
Forum: V6
06-07-2019, 08:47 AM
Replies: 27
Views: 9,500
Posted By flechebleue

Re: Wrong reading of the coolant temp

Hi Sierra6
you probably right. Looking more carefully to the schematics I agree that the fan should be only triggered by the switch and not the ECU.
But I'am still puzzled by the fact that the...
Forum: V6
06-06-2019, 02:05 PM
Replies: 27
Views: 9,500
Posted By flechebleue

Wrong reading of the coolant temp

Hi guys
I have a small issue with my 1989 V6 firebird. The coolant temperature given by the ECM is lower than it should be (by around 40°F). It doesn't seems to impact the car behavior except the...
Forum: V6
10-30-2018, 11:13 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

And you had no errors on the ECM. When I just disconnect the vacuum port on the EGR I have an error after running few kms.
Forum: V6
10-30-2018, 08:15 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

You have a new eprom with the EGR cancelled or you are running with the standard one?
Forum: V6
10-30-2018, 05:36 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

I will change the gasket and see how it behaves.
Most of the sensor have been already changed (coolant, air, maf...)
Forum: V6
10-28-2018, 01:36 PM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

It seems that nobrody has exactly the same beahvior for the o2 sensor. Seems to be better with ceramic coated headers. In my case as the system is going in closed loop I assume that the sensor is hot...
Forum: V6
10-28-2018, 09:01 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

That's strange. I've checked the O2 sensor and everything seems to be OK. The loop is closed most of time (except at idle after 1 min or so) and the signal on the aldl tool seems to be perfectly fine.
Forum: V6
10-27-2018, 02:14 PM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

I have changed the ICM. Now the EST cable works as it should. I have set the base timing at 10°. It goes slightly above 20 when the EST is connected.
the motor is running fine but I have less power...
Forum: V6
10-26-2018, 12:29 PM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

I have an old icm that was on a working distributor. I will make a try and see if it solves the timing issue.
Forum: V6
10-25-2018, 02:49 PM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

I am sure that I open the right connector. when I open it I have the corresponding error on the ecm.
Forum: V6
10-24-2018, 07:22 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

Everything was fine but the timing issue was definitly there before as I havn't touched the distributor during the installation of the headers.I've seen it because I'm tryng to chase all the possible...
Forum: V6
10-23-2018, 08:19 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

If I move the distributor and set the timing to 10° the motor runs poorly : no torque at all. Not surprising as the EST doesn't seems to work as it should be (increase the timing). that's the reason...
Forum: V6
10-23-2018, 07:54 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

I have a manual transmission
- if I disconnect the EST there is NO effect. The timing stays at 22°. This is the issue. This is the reason why I'm asking if it could come from the ICM
- I've removed...
Forum: V6
10-22-2018, 02:35 PM
Replies: 28
Views: 1,075
Posted By flechebleue

Re: Few issues after installation of pacesetter header

Hi
I’ve tried for sure to disconnect the EST cable to optimize the timing but unfortunately it doesn’t work. With or without EST the timing is the same. Could the ICM be defective?
Forum: V6
10-21-2018, 11:24 AM
Replies: 28
Views: 1,075
Posted By flechebleue

Few issues after installation of pacesetter header

Hi Guys
I've recently exchanged my old exhaust system with a set of pacesetter header, a new cat converter and a dynomax exhaust (I had it before). At the same time I've replaced my EGR valve and...
Forum: V6
08-04-2016, 10:19 AM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

I've tried to replace the ICM by a GM part but I don't see any change on the behavior. What else could be wrong?
Forum: V6
07-28-2016, 07:46 AM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

It's an aftermarket part. The coil is a GM part. Does it means that I have to replace the icm by a GM one or can I keep the setting as it is? When I drive the car I don't see any difference compare...
Forum: V6
07-28-2016, 07:28 AM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

Ok, I have exchanged the two wires on the est cable. That's a little bit better but still not as it should be. At 10 degree the engine is still not working properly. A good setting gives 18 degrees...
Forum: V6
07-27-2016, 03:52 PM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

Ok I will try to do that. This is quite strange as I bought the complete assembly ( distributor, I miss, pickup coil..) already mounted.
If I understand right the timing should advance by 18degrees...
Forum: V6
07-27-2016, 02:19 PM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

When the est cable is disconnected the base timing is around 30degrees. When the est cable is reconnected the timing goes to 20 degrees at idle. If I increase to 3000 rpm, it goes to 36 degrees.
I...
Forum: V6
07-27-2016, 12:54 AM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

When I check timing at idle I have 20 degrees instead of 10. So I am 10 degrees off from the optimal timing. However when I check for compression on cylinder 1 the mark is on 0!
With 20deg at idle I...
Forum: V6
07-26-2016, 01:57 PM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

I don't think this is the problem that I have. The mark are at 120 degrees from each other. I'm only off by 10 degrees.
I have optimized the timing to obtain 36 degrees at 3000 rpm. In this...
Forum: V6
07-22-2016, 02:19 PM
Replies: 19
Views: 7,165
Posted By flechebleue

Re: Ignition timing v6 2.8

I am using the large mark (there are 3 marks at 120 degrees). The rubber on the damper seems to be ok. I've checked the position of the mark when in front of the 0 degree and it corresponds exactly...
Forum: V6
07-22-2016, 01:00 AM
Replies: 19
Views: 7,165
Posted By flechebleue

Ignition timing v6 2.8

Hello
I've exchanged the complete ignition module on my 1989 v6 2,8 Firebird as the old one was corroded and pickup coil was shorten.
I've reinstalled the new one at the same position than the old...
Showing results 1 to 36 of 36


 
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