My car is 92 with minor mods. It will run fine for awhile. Then the service engine light will just start flashing rapidly. I can shut the car off, but if the key is on my regulators are clicking and the fans flicker on and off. It will start again but acts like injectors are not firing correctly or timing is off; cannot figure it out. Can let it sit for a couple weeks or month and it will fire up and run fine for awhile but then it starts doing the same thing; sometimes after an hour of driving or sometimes after a couple days of driving. Have checked all grounds over and over. Cannot get codes out of it because it dont set any. Any advise would be greaty appreciated it is driving me crazy. Thanks!!

 

What kind of car/engine? Camaro, Firebird, 305 TBI, 350 TPI, 3.1 V6, etc.?

 

350 TPI engine, 1992 camaro,

 

if the SES light comes on,there are codes in the computer.

use a paper clip to jump the top 2 terminals on the ALDL connector right above the right driver knee area.

it should flash code 12 three times,then flash each trouble code 3 times,and when all the codes have been shown,code 12 will flash again.

hope this helps,let us know