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JZA70 448 rwhp everyday
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2,994 Posts
Discussion Starter · #1 ·
Hey every one when i let my car sit for a few days and start it up the idle surges between 1500-2000 for about 5 mins, then goes back to around 700-800 like normal. If i drive it every day it does not do this. Im gonna clean my ISC valve any other sugguestions / comments?

~scott
 

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Banned
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1,731 Posts
ISC. If all else fails, just block it off at the manifold and run a longer screw in the TB. Also gets rid of that annoying huge idle jump when you turn the AC on.
 

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Former 1.5jz-Powered MKIV
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649 Posts
You probably need to re-cal your TPS, I had that problem a while back and I thought that my TPS was going bad, so I bought a new one and it still wasn't going away. Then I realize when you do the calibration, you gotta be right on the money or else you'll still have the problem, I took me several tries to get it just right. I haven't had any issues sense then, o yea, dont mess with the screw setting on your throttle body because it's part of the calibration of the TPS.

-Shitzu
 
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