i have a 97 Camaro lt1 6spd about a week ago the car got a stumble in it but would ony stumble once or so and run fine the Monday as I was leaving work it dies at stop sign cranked few times fires up and runs great. well next morning same thing dies and fires up runs fine now the car has got hard to start smells flooded and tach jumps around bad, tried to scan and scan tool wont connect to car any ideas? im not a chevy guy so im lost any help would be great.

 

ideal thing would be to be able to scan. I had an issue similar to this, it was the coolant temp sensor.

 

ok well they had the fans crossed at the relay due to the thermal switch now they have locked up

 

I wish I could figure out y wouldn't scan

 

just checked and no spark coming out of coil

 

any ideas guys

 

Are you using an OBD2 scanner? Parts store scanner or?

 

coil, icm, opti?

should probably start troubleshooting using info from shoebox site.

http://shbox.com/1/4th_gen_tech2.html#opti_test

http://shbox.com/1/coil_testing.jpg

 

ok changing icm to a broken spare gm icm, and it ran but maf had to unplug do to surge, run good so bought new bwd icm installed, ran for short time and died like 20 seconds, so put gm part on it and ran, bought another aftermarket icm and same problem any ideas y it runs on old gm part and not aftermarket ones?

 

It's hard for us to help you when your post are so poorly written. At least use some commas or something so we can read it a little easier!

 

sorry didn't know it had to be perfect.

 

Aftermarket Chinese junk does not work as well as genuine gm or ac Delco parts.