I got a 91 firebird that just wont start after stalling on me once...
the engine vcranks over just fine, and it gets spark.
but it seems to not get any fuel at al.I know the pump is dead, so I temperarely put an external pump on it ( delevering 6 bar )
but still it seems the injectors wont stray.
they get 12V and everythingm just n fuel.

I put my laptopwith tunerpro on the car to read out.

I got 3 errors/values out of range.
1) 0,0V at fuel pomp ( normal due to me removing the relay as long as the pump is out.....
2)maf sensor reads 5V and 101kpa. if you crank it goed to 4.6V and 94 kpa.
3) temp/corossity sensor ( LOW )

I tried starting it with the sensors disconnected, but no go atm.

I also checked the ground going from the 2 sensors to the ECM. Boh check out fine.

 

Prob a real long shot,change icm its in the distributor...one day car jus died and that was my last idea an it worked so yeah go to a junkyard learn how to take it off and put on an jus slip it in your pocket good luck

 

Tried that already with 2 brand new ones. Didnt work. Its the map that is way out of reach.

 

Im pretty sure a map from the junkyard would also work I have like 2 at home...its rare that maps dont work isnt it?

 

Tested the ressistor value of the map and even when i suck on it. Resistorvalue doesnt change.

Btw. Im from belgium. Closest junkyard is in netherlands. A 2h drive. And is gonne be as much as newprice. So better buy it new i guess

 

Have you at least tested the resistance of the injectors? Are they original? What you describe could be at least one bad injector. They should all be very close to the same resistance around 13 ohms. How did you bench test the map? I tested mine by supplying 5 volts from a usb port and measuring the output voltage when applying vacuum with a vacuum pump. I think that's the most reliable way. But after checking all my sensors it still turned out to be the injectors.

 

Dam well good luck fixing your car