i have a 94 lt1 z28. just replaced fuel pump and filters, plugs and wires. the car runs great till it gets hot and when it gets hot it starts to sputter, stumbles and almost like bogs. the idle gets alittle rougher on it and u can feel it loose power and the oil pressure seems to start flucuateing when this is happens but once again it only starts to do this when it gets hot. input would be awesome.thanks in advance! this is real frustrating to me.can it be the coil or optispark. once again thanks in advance!

 

I'd start off with the icm first. Check fuel pressure aswell

 

What is the icm

 

ignition control module.

 

if you dont know what an icm is then you need to have somebody else looking at your car.. lol.. things you want to look at
1. have your icm tested
2. make sure your coil isnt getting irradic spark
3. make sure you have compression
4. make sure that you have no burn spots on your wires
5. make sure that your plugs were gapped correctly, if not then they might be fowling out

check these things and let us know..

 

oh and

6. make sure your fuel pressure is at 40+ lbs

 

OP...could also be the temp sensor keeping you rich or perhaps a faulty o2 but if it were the o2s you should have codes

 

I was thinking ICM aswell..