I bought a 300 buck 91 Camaro RS V6 with manual gearbox off of Craigslist, and it won't start. The guy I bought it from said that it stopped running one day, and it just sat around for over a year before I got ahold of it. The ECM was out on the carpet, bypassed the VATS system, and would run with starting fluid. I picked up the ECM out of a 91 Firebird V6 with an automatic gearbox and fueling relay, and the thing would misfire like nobody's business. Also, I had to keep pumping the throttle to keep the engine running. The heater valve was bypassed for some reason too.

https://www.thirdgen.org/forums/tech...formation.html


You are going to have to do a lot more basic testing before someone one here can solve your problem(s )
Like is the fuel pump running , do you have fuel pressure at the engine for starters ?
Appears a fuel problem if it will run with fuel sprayed in

Might also try pulling the engine fault codes and report back what you find

https://www.thirdgen.org/forums/tech...s-dumbies.html

I'll have to try pulling the fault codes out of the car this weekend or something. I've done all of the following:

-Check fuel pump (works fine)
-Check fuel pressure (45 PSI)
-Change ICM
-Change battery
-Change fuel injectors
-Plug in loose oxygen sensor cable
-Repair broken cables
-Replace wiring harness for fuel injectors
-Re-plumbed some spherical canister that is behind the bumper on the left side of the car.


I keep banging my head because I just can't stand the fact that I haven't figured it out yet.