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Old 04-16-2013, 07:33 PM   #1
kungfujoe
 
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RB20 Idle hunting

Ok, here we go.

I've been chasing this damned idle problem since I bought my car. I've tried to describe it on several forums as well, which never seems to go very well, so, instead, I made a video of my car idling instead. It's only about a minute long, so if you think you can help, by all means:
Note: My Tach is still a 4Cyl, so math might be involved. Just know I'm shooting for a reading of 1.3K, which means my engine is damn near 900 RPM. Also, this is just after starting my car. Unless otherwise noted, I do not touch any of the pedals.
My YouTube Video
(inb4 "ghetto boost gauge mount"...I know...)

Anyway, I think the video very accurately displays what happens. I've annotated it to show what I'm doing, but basically, I start the car at a dead stop and it does it's Idle hunting thing.

Things I've tried:
Hunted for vacuum leaks, and fixed them when found.
Hunted for boost leaks
Power balance tested the engine
Changed my spark plugs
Cleaned my MAF
Disassembled, cleaned, and set my TPS

Things I think could still be wrong:
Needs a 255 FP
O2 sensor plug is slightly melted...so replace the whole thing I guess
New MAF
Check for more vacuum leaks
(doubtful) I could stand to upgrade to a 3" exhaust

Any other guidance is appreciated.
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Old 04-17-2013, 10:16 AM   #2
GalmTeam
 
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have you tried cleaning the iacv;
Some people have success with that when their car would start hunting at idle

http://i172.photobucket.com/albums/w.../IMG_19051.jpg
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Old 05-01-2013, 01:15 PM   #3
aga
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how do you clean it? carb cleaner?
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