Mechanics

MY IS UNABLE TO START.

1992 Pontiac Grand Am • 423,226 miles

I have a 92 Grand Am with a 3.3L V6 engine. My car stalled out at an intersection with no warning at all. I coasted it to the side of the road and attempted to start it with no luck. Someone said that it could be the fuel pump but it made a humming noise and sent fuel to the injectors. I replaced the fuel regulator, Ignition coils, the Ignition control module, Crankcase sensor, tried and tested other ECM's, Checked all fuses all but one were ok. The one that was burnt out was an EGRS fuse. I changed it but nothing worked. I had a mechanic look at it and did an injector test. It did not light up using the ECM but it did light up using a testing light. All I know is that something seems to be blocking an electrical reaction from the ECM to the Ignition Control Module. I did have three items come up on the Service Engine Soon light before all this testing was done. I got a Code: 26 Quad Driver Module, 27, Quad Driver Module Circuit, and 39 Torque Clutch Converter Circuit. According the the mechanic he said that it was not the Transmission. He asked me if the tranny made a noise while I was applying the brakes I told him no.
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Darth_kalus
September 30, 2011.



Correction: The Fuse that went out said ERLS.


Tiny
Darth_kalus
Sep 30, 2011.
This can be a number of things. From what I've been able to find, the usual culprit here is the TCC, either faulty or unplugged.


Rivermikerat
Sep 30, 2011.
If the TCC was unplugged where would I be able to find it?


Tiny
Darth_kalus
Sep 30, 2011.
There would be an electrical connector hanging loose somewhere near the transmission.


Rivermikerat
Sep 30, 2011.
Alright, I'll have a look at it sometime in the morning.


Tiny
Darth_kalus
Sep 30, 2011.
Ok, let us know what you find.


Rivermikerat
Sep 30, 2011.
I didn't find anything loose at all around the transmission. Also while I was looking around the engine my friend had an idea that we tried. He used a spray can of Start up. The car tried to start when he sprayed it into the mass airflow meter.


Tiny
Darth_kalus
Oct 1, 2011.
I did some more research on this and found out some related information: The QDM is built into the PCM The most common failures are the EGR solenoid or the Canister Purge solenoid.

Check all computer and sensor grounds.

Other information says it may be the ECM since a number of sensors usually don't fail at once.

The attached image may be helpful.


Rivermikerat
Oct 1, 2011.
According to the mechanic that bailed on he tested 3 different ECM's and switched out the PROM's He said that the ECM and PROMS were good. First, how would I go about checking all the sensor grounds? Second, where exactly is the EGR solenoid / Canister Purge Solenoid located? Would it be found in my Haynes book? Thanks again for the info.


Tiny
Darth_kalus
Oct 2, 2011.
Yes. It should be in the Haynes Manual. The Canister Purge Solenoid is #8 in the image I sent earlier. The EGR solenoid is part of the EGR Valve.


Rivermikerat
Oct 2, 2011.
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