I have a '92 Z28 with 305 and 700R4. I have the idle at 900 and drops to around 700 when I put it in gear and will keep in gear running at idle. As soon as I apply throttle it dies. If I rev the engine then drop it in gear it will keep running.
I set the TV cable and it seems fine. The engine was tuned a while ago but it hasn't been run in six months.
Any ideas?

 

TPI or TBI?

No running in 6 months? Did you put gas stabilizer in the tank? maybe gas gummed up in there. How long since fuel filter repalcement?

 

It is TPI. I bought it from a friend's son today. They said it was having this problem and they stopped driving it in Jan. They said the engine was tuned up last summer. The problem existed before it sat for 6 months. It starts right up, idles nice, revs good and drops into gear OK. The trans fluid is full and only slightly dark but no "burnt" smell to it. I will replace the fuel filter, I remember having those drive me nuts every six months on my Nova. I guess I ought to get an air filter while I am at it.

 

the only way that's fuel-related is if it's a bad throttle position sensor, and it doesn't seem like that, either. The symptoms indicate a problem with ignition advance.

 

Won't be the first time someone tuned an engine and screwed it up.
It acts like the TC is locking up as soon as I give it gas. I'll check the TCC circuitry too.

 

OK this is wierd. I went out tonight to show my wife what the problem was and the dang thing wouldn't do it. It was acting up this afternoon but not at night. It was very cool tonight. Any kind of heat sensitive things that could cause this?

 

I've discovered that when you try to show such things to others, they don't happen.
Yes, it could be temp related, the computer does have a sensor for the temp of the air entering the engine. Also, coolant temp affects the TCC signalling