my 89 camaro is acting up, when im in park, i can rev it up and keep it at 4000rpm no higher and when i let off the gas teh car drops down to under 1000 rpms and almos dies. like just now i was just doing it and i had my headlights on and when i let off teh gas at 4000 rpms the car was all shakeing and teh lights flickered and teh car almost died , then a few moments later teh engine got momentom and got back to normal idle . but this always happeneds when i try and rev it up. Alot of exhuast coems out durign this time too,

any theries on what may be teh problem here?


thx guys


tryign to get this baby back to 100% its like 60% now

 

you do know it is VERY bad to rev an engine high under no load, don't you?

 

um no didnt, what do u mean no load? so its normal to do that......opps

 

There's simply too many possibilities to diagnose. You need to datalog to see what's going on. Could be going lean/rich, spark advance, could be mechanical. Got a laptop? TunerPro RT is invaluable!

 

what do i do with tunerpro......


probanl bes to take it to a shop or soimehting see what they say

 

TunerPro RT is a software program you run on your laptop to evaluate what your engine is doing. Granted, you need to be somewhat familiar with engine management to decipher. I'd recommend some reading on the DIY PROM board. Technology isn't slowing down any, just advancing. Might as well get on board.

Problem is... your car is controlled by a computer. So, if YOU want to fix it, YOU need to get familiar with mechanics and engine management. That may even include computers. If going fast and saving money is in your future then you simply can't afford to do without a means to datalog and alter the parameters of your ECU. If you simply want to get it running good in stock form then by all means take it to your local mechanic. Just be prepared to pay upwards of $65.00 an hour. Good luck!

 

under no load: reving the engine in P or N
it would be alot safer to put the car in first gear and drive it at 4000 RPM than sitting in a parking space in P or N reving to 4000 RPM(or to any rpms)