I'm having problems with a 3.1L v6 1992 firebird. The injectors are not firing so the engine will not start. I have gone through everything I can think of and I believe the pcm needs to be reflashed. The VATS system is working so I know that is not the problem. I believe it is all in the computer because when I have a scanner hooked up the pcm thinks the throttle is wide open. If anyone knows how I can get this fixed any help will be greatly appreciated.

 

 

I used a test light and went through the diagnostic test to check what was wrong and it led me to the pcm being bad. I sent it off and had it worked on but still had wot. I thought it might be the prom in the computer at this point and put a new one but still wouldn't run so that what made me think it might need reprogramming.

 

 

I don't have a passkey error so I'm fairly that the vats is fine. Is the any other reasons the injectors aren't working?

 

 

 

I replaced the icm doing a tune up along with distributor wires and spark plugs. The tach I have hooked up works when turning the engine over. I resistance tested the injectors and got the correct resistance from all 6. I tested the tps signal wire at the tps plug and got around 5 volts.

 

 

Yes. The signal wire has voltage. It doesn't make sense to me how or why. It had that problem before I sent the computer off.

 

 

Guess that's what I get for getting a computer out of a junkyard. Thanks for your help on this. I'll be sure to get when I get it running on here. Have had it for two years and only had it running for a total of probably a week.