Well after i have driven my car up to the hottest operating temp. and then shut it off; if i try and go anywhere in the next hour or so, i will get a stumble at idea immediatly after start up but that is all and it wont happen again untill i get in the same situation. any suggestions? thanks in advance.

 

Dang man it sounds like your car does the same thing mine does. Mine runs like a champ cold and runs like garbage warm. We should start a stumbling LT1 club. I have narrowed the porblem down to the opti. There is nothing else for me to do, new 02s new plugs wires, fuel filter. I t has to be the opti or it is something I am not aware of.

 

Well mine only does it for like 2 seconds after i start it up and it is still hot. It never stumbles any other time. I jut replaced my fuel filter but that didnt change anything. I hope its not the opti but i know thats what it will probably come down to.

 

Same thing here. My 97 I replaced the IAC and IAT and the stumble is gone.

 

Stumlbe as in a slight miss? Mine seems to randomly drop cylinders under load.

-Dustin-

 

yeah like a little miss but it goes away after 2 seconds.. i might have to try the IAC and IAT and see if that helps.It never misses under load or acceleration.