I have a 89 firebird formula, it has a 305 tpi, it's a 5 speed. It's has some really biazarre behavior, the tpi has 2 fuses when i put both one of them in it runs good, but i has absolutely NO power, it's terrible, then when i put them both in, it runs really good for 2 soconds then it just dies. with 2 of them in for the two seconds that it runs, it runs like it's supposed to, then it kills it. I'm really at a loss, so any help will be greately appreiciated.

Jerry Reeves

 

Man i have no clue about your problem, but i had to ask HOWD YOU GET THE NAME : Lawnmowerpimp

 

What fuses are you talking about? Any engine codes? How exactly does it run?

 

Are you talking about the injector fuses? If that is the case than it sounds like you may have some bad injectors. But I don't see how it would run correctly with only one injector fuse installed. I will have to look over my schematics and get back to ya or someone else will correct me. A little more detailed description of the problem would be nice as well. Like exactly what the fuse block says for each fuse, including the #.

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1987 GTA L98 MD8 GH3
355 '97 Vortec 4-bolt block, TRW(suck) forged pistons 10:1 CR, TFS 23*, LT4 Hot Cam, Ported plenum and intake, SLP Siam Runners, Edelbrock TES, gutted Cat, Flowmaster, K+N cone, AFPR, TB bypass, AirFoil, !AIR, !A/C, !EVAP, ARAP, 2300 stall.

"Stop Lights timed for 35Mph are also timed for 140Mph"

 

Hello
i am helping lawnmowerpimp work on the car so i can answer a few questions..

we dont have a scanner so i dont know of any engine codes..

its the number 2 injector fuse

if its not pluged in the car runs like crap, and like he said when we stick the fuse in the car runs like it should for about 2 sec then dies. at one point we stuck the fuse in and it stayed normal and never died, the car ran great, but the next morning the after we let the car sit overnight problem came back. so something strange is going on. any help would be appreciated

thanks

greg grandinetti

 

Haha
thats bogus

Maybe your ECM blue screened

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1985 IROC-Z, nuff said :P

 

Yeah, i'm thinking that it could be the injectors also. When only one fuse is in there, it idles fine (smooth), it also runs fine, but it has absolutely no power. But on the other hand i don't know why the injectors would work for a few seconds then quit. Could something of gone haywire in the ECM? Thanks for the help...keep the suggestions coming!

Jerry

 

I forgot to mention, there were no engine codes.

 

Only a few possibilities that I can see....

1. INJ2 injectors are sticking open and flooding the motor (all of them? not too likley, but possible)

2. You have one or more injectors shorted out that is pulling the voltage down..ohm out each injector, should be in the 18ohm range.

3. As you mentioned, the ECM QD may not be able to handle the load of the additional injectors. From what I've read, there is only 1 QD that drives all injectors.

><>,.><>,.,.

Nother thing, you could have a short to ground in the INJ 2 injectors harness too.



[This message has been edited by 8Mike9 (edited July 02, 2001).]

 

it might be a bad ground somewhere, when i helped my friend put in a LT4 383 in his TA we had a bad ground and it kept blowing a fuse