I have a 1996 Grand Am Se with the 2.4 DOHC, got this car fairly recently and it has had this problem from the start, it starts up fine but if you don't let it warm up to at least 100 on the temp gauge. When you get the engine past 1500 rpm and then let off the gas, the engine will die. When you go to try to restart it, it just cranks for several seconds before it catches but once its started and warmed up it is perfectly fine. A few times when I have driven off without allowing it to warm up all the way and it dies it will give me an error code for a misfire. At this point I have gotten codes for cylinders 2, 3 and 4. Was wondering if anyone would know why this is happening.

Checked the TPS last night with an analog meter voltage was off by about .2 volts but the had a smooth range of motion throughout. Also checked the Fuel Pressure Regulator and it held somewhere around 20 Hg. Also checked for arcing on the coil pack, didnt find any. Don't really have any other ideas, please advise.

check your ECT sensor and wires and compare it to specs....

Welcome to AF John200!!

I wouldnt say this is cold start troubles as it starts just dont keep running untill warmed up.

How many miles on this 2.4 ??

Since you have so many misfires, have you replaced anything in the ignition system, plugs, coils, ICM ???

Id start with those components above if you havnt already.

Possible it could even be an injector bad/clogged or vacum(intake manifold) leak.

Thanks for the warm welcome, as for ignition parts it has new plugs and I replaced the spark plug boots because the originals in the car had melted at the tip. Its got 88,000 miles on it and it has an automatic transmission.

I suppose now would be a good time to bring up a little history about the car. I bought it dirt cheap from an elderly lady who no longer could drive it. It had overheated and blown a head gasket, I then went through all the hassle of pulling the head off. I ended up needing to get a new head because the original was so badly warped. Had troubles getting the head to seat because the lifters were pumped up too far, ended up crushing them in a vice to get them to deflate (was recommended this method from another forum). Got the new head on, checked the gaskets on just about every freaking thing that had one including the injectors which looked clean when i inspected them. Put in new filters; trans, oil, fuel. Also cleaned the coil pack because it had some carbon streaks on it.

Don't think I have missed anything so far.