so this is my problem at idle my car is hunting for rpm between 600-1000rpms and then some times the boost gauge will go from 20 vac were it usually runs all the way up to 10 and sometimes close to 0 vac with out even touching the gas and the car almost dies. I replaced the upper intake manifold gasket because it was leaking but that didnt fix the issue.
has any one else had this problem and what did you do to fix it or if you have any suggestions please feel free to help

thanks Matt

 

It could be your egr tube leaking. I replaced my upper intake manifold gasket and egr tube gasket also. However the egr was still leaking. Spray some tb cleaner where the manifold attaches to the egr and see if the idle changes. I could even feel the air when I put my hand there. I used rtv copper gasket maker to seal it up.

Also make sure all the hoses are on.

 

Think back to the last time your car idled and ran fine. What modification did you do right after that, if any?

Also, please provide a complete list of your modications.

 

i havent done any modifacations in a while the last one i did was the 3.33 pulley and that was a year or more a go the idle was doing wierd things at the end of last summer (it would dip down to 400 rpms) so when i brought the car out this year i cleaned the throttle body and that brought the idle up but then it started hunting i didnt think any thing of it untill last saturday when i herd a air leak form the intake manifold and my boost gauge was going crazy so i changed the gasket yesterday the sound is gone but the same problems are still there (the ones i stated before).

i have the stillen kit with mattys v1 plate, blitz blow off valve, stillen exhaust, y pipe, light flywheel, act clutch, short shift and the 3.33 pulley

 

that diling issue could be your IACV sticking..i had that issue..i cleaned it out and it went away..
Good Luck

 

THANKS HOW DO I CLEAN THE IACV

 

It's really simple. I/we could tell ya, but there are writeups with pics in the stickies.

EDIT... Here you go...

http://forums.maxima.org/showpost.php?p=1260447&postcount=16



http://forums.maxima.org/showpost.php?p=2389827&postcount=28

 

COOL THANKS