Hey guys I am at my wits end with this car. Here is the problem when the car is cold everything is fine but when it starts to get hot it stumbles and sometimes stall at idle. It will also stumble sometimes when at half throttle or less. Never will it do under full throttle though It does not do it all the time though. I think that it has to be a sensor or something but I am not sure which one which one will do this. SO far I have replaced the all 3 coils pack, the ignition module, Fuel filter, Rebuilt the fuel injectors, New Map sensor, New plugs and wires and I think thats it. Let me know what you guys think

 

Did ya try a couple tanks of Lucas fuel system treatment? Also check air filter, clean throttle body/butterfly w/spray, clean Maf sensor wires w/spray...

Do all these easy things first.

 

I have done all that. The problem is definatly effected by heat I think it is a sensor but which one would do this?