ok...heres the deal..ive tried everything to try to fix my cars problem!! changed fuel filter put new gas with STP fuel system cleaner!! drained radaitor coolant and flushed it out and put in the orange stuff!
now i have plugs and wires im going to replace tom morning!!
ok this is what is happening " when the car starts up after a night of sitting i can drive it like a reg car floor it and it gets up quick, but after its been running for a good 15 min it still runs fine until i try to give it WOT again and it BOGS bad makes the engine to me like it stops turning then catches itself and fires back up...then when i come to a stop light and sit there it idles really weird like the rpms are like 500 dropping to like 350-400 and then catching again and going back to 600rpms..also my oil guage goes back and fourth when this is doing that not alot but just enough to where i can see it move...my car has stalled on my 3 times when i have come to a stop!! i really dont know if its the opti, but if it is then i will change that out tomorrow!! please help me !!!
thanks
randy

 

do you have msd inition box in the car I know it sounds dumb but mine did that same thing I found a damaged wired on the msd harness taped it uo and it was bueno.

 

no i belive it is still the stock box with 93k miles on it!!

 

i think it may be your IAC. also could be things like map sensor, tps sensor or maf.

 

i already changed my PCV valve and my tps sensor!!
and my MAF sensor i cleaned and loooked overreal careful to make sure it will works..what is the map sensor?

 

also the iat sesnor cant fit all the way in my elbow since its alunimum!! and like goes half way in !! but that cant be it b/c it worked b4

 

What's your fuel pressure during all this?

Sounds to me like air in the fuel system. And it takes a while to get to the fuel rails.

 

fuel pressure is fine .