my car starts, but idles around 3,000rpm's. I have an adjustable fuel pressure regulator, and i dont think i have it adjusted right yet, but could that do it?


if not, what do you think it is?


its a z6 turbo btw.

 

changed your TPS recently? they go bad, and that would do it....

as for the FPR, yes that can affect your idle, as a higher pressure would allow more fuel to spray through the injector when it opens....

other thing is the throttle butterfly in the TB, ive cleaned many a TB and adjusted that 7mm allen set screw so the butterfly plate doesnt stick, only resulting in setting it too far open....

i think a little more info about the nature of the prob might help (i.e. did it happen all of a sudden? you change parts? etc...)

*EDIT* the thing about the FPR is, you should be able to close it off while the engine is running, and watch the idle drop. if that doesnt happen, i would say that its another problem.

 

ok, so wait. CLOSING the screw on the top will make it LOWER? I havent really found out how that worked.

and i just swapped this engine in, so i guess anything could be bad.

 

Pull the vaccum source of the FPR and see if it gets better . WHo chipped your ECU and what basemap is it running on ?

 

haha i hate that shit... took us 3 days to get a ITR/Skunk2 build on a B18C to idle enough to get it tuned....

but regardless, i would have to see a pic, but there are two screws to adjust on a standard TB: a big one with a slot in it, that you cant see the body of, just the head (about 1 cm across) and then a little tiny allen set screw, held by a 7mm nut, that sits behind the brass pulley that works the throttle butterfly via the throttle cable. as you can tell my opening and closing that pulley, the little allen screw stops the plate from closing too far. sometimes, this plate will stick, and you have to adjust that screw out to keep the plate just slightlty more open to keep from sticking. in your case tho, i think the plate my be too far open, resulting in the airflow of higher RPM and the TPS reading higher than normal for idle.

lmk if that helps, i can get a pic if u need one....

 

i know about the idle screws already, and i cleaned the butterfly before i installed the TB onto the intake manifold. ill try the vacuum thing.

also, its basemapped by John Vega @ phearable.net

 

removing vacuum doesnt do anything.


TTT.

 

Is it a continous high idle or is it bouncing?

 

yo i had this problem with all my hondas if ya go out to ya car and take off ya intake look inside the throttle body there will be a hole on the bottom inside put ya finger over this hole blocking all the air from sucking in . ya car should idel considerable lower aroung 900 rpm if so you could either by pass this valve by looping the coolent hoses togeter and putting a peice of thin card board between the holes this is right under the throttle body if ya dont understaind what im talking about then pm me a number so i could help ya further

 

yea, troy told me about that. its the warm air idle valve or some shit. he told me to just clog it up with doube sided tape or something.


but yea,its continous. ill try the hole thing on monday, ill be in st augustine all weekend.