Runs Rough
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Joined: May 2006
Posts: 115
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From: colorado
Car: 85 Trans Am
Engine: 383 ci
Transmission: 700R4
Axle/Gears: posi 342
Runs Rough
After spending hours on this and throwing in a spark controll modual, and cap and rotor, testing the ignition controll modual 10X to get it hot perfect. The car still would not run. It finally fired up and sounded like the timing was way off. Every thing is connected properly such as spark plug wires, verified several times. fired it up again to see if we could get her to throw a code and she refused this simple request while belching fire out the intake and popping. Ran like this for a good minuite or two. I would stand on it and could not get the RPM's over 2k. We decided to try one more thing before we threw a Lit match down the gas tank. We disconected the brown wire in the harness on the fire wall by the A/C delete box. This wire is to be disconected when making adjustments to the timing. Amazingly enough she decided to quit belching and ran smooth however I did need to keep my foot on the gas to keep it around 1K or the motor would die. We still have no idea what the problem could be. I am considering replacing the knock sensor to see if that helps. Any help would help!!!!
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Joined: Oct 2006
Posts: 1,974
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Runs Rough
sounds like you are having a severe timing problem not the knock sensor... the dist is either 180 off or a couple teeth depends at what point did you actually put the dist in? did you put it in on the stand?
Thread Starter
Member
Joined: May 2006
Posts: 115
Likes: 0
From: colorado
Car: 85 Trans Am
Engine: 383 ci
Transmission: 700R4
Axle/Gears: posi 342
Re Re: Runs Rough
The car has been running perfect drove it for 20 min parked for 1 hr. When I tried to start the car it just cranked would not start at all. I then pulled out the Ignition controll mudual and had it tested and it tested fine. Re installed and the car started but ran rough and would not stay started. With the brown wire disconected It is not missing at all. I could just drive it this way by increasing the idle but I would not be getting any compensation from the Computer. It would need to Idle at about 1500 RPMs so when I put it in gear it would not die. So may be the ECM is bad could that be the problem? Is there any way to test it? I am still getting code 12 which makes me believe that might not be the problem.
Thread Starter
Member
Joined: May 2006
Posts: 115
Likes: 0
From: colorado
Car: 85 Trans Am
Engine: 383 ci
Transmission: 700R4
Axle/Gears: posi 342
Re: Runs Rough
Checked the wiring going to the distributor and found a loose wire so I soldered all 4 wires going to the distributor from the ECM. Started but running rough got code 42.
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