My car starts popping and struggling once the car gets running warm. When its cold the car runs awesome. I checked my icm and its really hot like its overheating. I've heard of a mod that might cool it down, if i seperate it with some washers. Could a overheating icm cause the car to start popping and struggling?

 

Here is a link to the mod you are refering to.

 

is this under WOT or just normal driving?

 

normal driving, as soon as i get in the highway it clears up

 

ttt

 

i have the same problem and i put a new opti, wires, icm, tps, k/s ,waterpump and o2 sensors and nothing changed

 

But you didnt replace your plugs, coil, MAF, or MAP sensors did you? those are also ALLLLL very important to your ignition system. As for the waterpump, i have no idea why you would try to replace that to fix a 'misfire' *shrugs*. I would first start by replacing my ICM & Coil, if nothing else, it will be good to know my components are new. Then if the problem persists, i would try to pull codes for some sensors. If no codes show up, the opti is probably going bad, mine didnt put out any codes when it went. Good luck with this, hope you fix it soon!

 

hey luda can you explain exactly what happens when the car warms up and does it happen no matter what rpm your at or only between say like 1000 to 2000 rpm?

 

it was leaking bad out of every corner of it on to the opti which is why it went bad. ill have to replace all the other parts you mentioned too i guess.

 

at any rpm, sometimes it will go smooth, its weird.

 

i changed plugs. Mine were to to cold.. everything went away..

 

What plugs did you get?

 

When my ICM failed the car would not spark at all, period. Not like your symptoms.

 

Mine misses only under WOT what could that be?

 

I'm on my 4th ICM. What usually happens. Vehicle starts, runs fine. After it heats up the vehicle just stops without warning. Starts back again after the ICM has cooled. One definitve sign that it's going. When the vehicle stops. There are no dash lights, (ie, AIR BAG, ABS, INOP, SERVICE ENGINE SOON, CHECK GAUGES;,) Pretty much the lights you get when the vehicle starts. They do not illuminate with the ICM just cuts out.

I don't know why it doesn't trigger an ECM response. Oh well, hope that little bit of info helps you in your diagnosis.