Okay here's what I have and here is what I have done. I have a 89 Firebird. I have replaced the spark plugs, the wires, the fuel filter, rebuilt the throttlebody, cleaned the injectors, ran injector cleaner fluid, new fuel sending unit, and I only run Premium gas in it.

Here's the problem.....If I am sitting at a stop light and the light turns grenn, if I "very" gradually ease into the gas, it does okay. But if I step on the gas, it will Stall out "BAD" like nearly cut off. But just initially, then it will straighten right back out. Now I am talking about "burning tires up", just an average "step on the gas." Can anyone help!!

 

Sounds like a bad throttle position sensor... the ECM doesn't know you stepped on the gas, and consequently doesn't know to deliver more fuel...

 

Oh yeah, I replaced the throttle position sensor too, I forgot to add that to the list. The voltage and everything read what it should. Is it possible that it could still not be working incorrectly though?

 

My 305TPI does almost the same thing but only until it warms up a bit. Iv got it either traced back to IAC valve or throttle position sensor. Let me know what you find out.

 

Hey guys, I just replaced my IAC valve and WALA....No more stalling! I love you guys, you are all the best!!!!!