89 s13 w/ s13 sr20 redtop wont idle!!

[skyline084]

Didn't you said it idles fine, but NOT when it's warm?
The fuel pump will def help and be noticed at higher rpms.. cause you're running a turbo charged motor... so it needs more fuel..
More air (turbo) needs more fuel.

[240bryce]

didnt fix it guys... i installed it today & then took it out for a spin & its still doing the same thing!!.. except now if feels like its only bogging during boost and WOT revv. The fuel pump actually made a noticable difference though.
Oh and i dont think iv mentioned this yet, but when the car is idling.. it starts out at like 800rpms then rises to like 2000.. then drops back down to 800 & does the same thing continiously till i shut the car off. i cant figure this thing out

[Lobo240sx]

Possible Vacuum leak on intake side near IACV. Hate to say it, could be a hose coming off the Intake Collector that has a small leak. As much as you have gone through it, i'd make sure your throttle body is completely closed while idling too.

[skyline084]

fix this thing yet?

[240bryce]

Yeah man i took it to Topspeed tuning in alpharetta, ga &they said it was all 4 coilpacks, intake manifold gasket, throttle body gasket and the vac lines were messed up...
i thought i checked those things!!
But anyway shes finally running