I HAVE THIS PROBLEM WITH MY GTA RIGHT NOW . FOR THE LAST SIX MONTHS I COULDNT FIGURE OUT WHY I HAVENT BEEN GETTING ANY INJECTOR PULSE. SO I CHECKED AND RECHECKED MY GROUNDS ,THEN I SAW ON ONE OF THE POST THAT IF THERE IS A VATS SYSTEM THEN THAT WILL NOT LET ECM TURN ON THE INJECTORS. I BOUGHT A 1989 GTA CAR NO ENGINE NO TRANNY, NO HARNESS. I THEN PURCHASED A 1987 IROC AND TOOK OUT THE ENGINE TRANNY AND WIRING HARNESS EVERYTHING DOES FUCTION EXCEPT INJECTOR PULSE . THE PREVIOUS OWNER DID SOME CRAPPY WIRING SO THE STARTER DOES CRANK . NOW MY QUESTION IS THE BLUE WIRE THAT IS SUPPOSED TO GO TO B6 AT ECM HOW WOULDGET THIS TO WORK AND CAN I STILL KEEP VATS AND IF NOT HOW WOULD I GO ABOUT GETTING RID OF IT

 

if anyone can tell me how to keep vats with the 1987 ecm i would really appreciate it.

 

There should be no VATS in an 87 ECM.

Someone can correct me if i am wrong.

 

i had thought that mabey vats was not letting the injectors fire since the car still has all vats passkey and ignition still intact.
well mabey someone here knows a suggestion . 87iroc computer and harness, engine w/a 89 gta no injector pulse. has been a problem since last year checked and double checked all grounds, lots of spark ,whole new dist.noid light on injector -nothing light just stays on . also took my computer and put it in a friends car to check it and started right up , thought i had mabey fried it or something ..any ideas....

 

the ecm will not pulse the injectors unless it gets reference pulses from the distributor.

 

how would i check the ppl /wht wire from dist. and what kind of reading would i get if working properly?