OK, here is the story


MY CAR- 92 B4C 5.7 TPI w/ 40k org. miles(stock, original, like new)

Car sat for the last couple years(06-08) and now i have a strange problem.

Every morning-Car starts perfect-fires instantanously and idles/runs awesome.....very fast and strong for the first 2-5 min. until it warms up a little(temp goes up past 1/4 mark) then the problems start.

When it warms up a little(2-5min), car starts to have a rough idle and does not run at full power. I can drive around ok when cruising not giving the car lots of gas. When i come to a stop light, i feel the car idling roughly. Then when i try to floor the car.....it doesnt have full power and it only shifts at 4500 RPM at most. I can just feel its not 100%. I can cruise at all speeds like everything is ok(nothing noticable), just at stop lights i feel the rough idle and when i floor it.....its slow and wont rev past 4500rpm! LOL!

OK is it my INJECTORS? Are they not running proper in a "open loop" vs "closed-loop"? Because the car runs/idles/drives perfect when its cold(first 2-5min)

Or is it a FUEL PUMP? but if it was the pump, why would the car run soo good and FAST for the first 2-5 min? and why does it drive fine when im cruising and not getting on it?

Mind you, car has only 40k on it and its mint! Seems like maybe one of my injectors is acting up when the car gets warm. Maybe thats why the car idles rough and doesnt want to rev past 4500, feels slow!

 

Welcome Aboard!

Check for adequate fuel pressure, then perform a power balance test of the injectors. I've posted the procedure here once or twice.

 

sounds like you have bad multec injectors, you have to ohm check them hot. just remove the wire connector and test with an ohm meter. they should be about 16. if any are below 12 there is your problem. this is very common. then call Jon at FIC (fuel injector connection.com) and get a set of bosch injectors. His customer serv is great and the injectors will fit and work with no problem.