engine surging

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
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ray666
Posts: 554
Joined: Tue Sep 04, 2007 10:10 am
Car: '92 240 sr powered tuned with a neo
Location: Pace,FL

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So i've posted over the past couple of weeks about problems i've been having well its not a vacuum leak like i originally thought. the car will idle fine when i first start it up but once i tap the gas. it goes crazy. its like its trying to scan to put itself back to smooth idle. my car has never idled at 700-800 since the swap was done. iacv?


duffman1278
Posts: 6816
Joined: Sun Apr 01, 2007 3:09 pm
Car: 89 240sx Hatch, the wildcats!

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Pressurize your turbo's intake to about 10psi and open up the throttle body, see if you can hear a leak from the piping couplers or IACV. Pressurize it with a compressor too, it's very difficult to hear it with the engine running.

User avatar
ray666
Posts: 554
Joined: Tue Sep 04, 2007 10:10 am
Car: '92 240 sr powered tuned with a neo
Location: Pace,FL

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i will give it a shot.

240SXmotoring
Posts: 95
Joined: Wed Sep 22, 2004 6:24 am
Car: 97/95/90 240sx
Contact:

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also make sure the IACV is not clogged or gunked up.

any CEL?

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Justin35ll
Posts: 1421
Joined: Fri Oct 17, 2008 6:57 pm
Car: s13 coupe sr20det

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mine did this on initial start up of my sr. went away after a couple days.Clean the IACV with brake cleen though

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ray666
Posts: 554
Joined: Tue Sep 04, 2007 10:10 am
Car: '92 240 sr powered tuned with a neo
Location: Pace,FL

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sweet whats the best way to get it out? i'm not familiar with what CEL is?

240SXmotoring
Posts: 95
Joined: Wed Sep 22, 2004 6:24 am
Car: 97/95/90 240sx
Contact:

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CEL= Check Engine Light

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ray666
Posts: 554
Joined: Tue Sep 04, 2007 10:10 am
Car: '92 240 sr powered tuned with a neo
Location: Pace,FL

Post

oh duh...no the cel is not on. i ran codes too and nothing popped up.

User avatar
ray666
Posts: 554
Joined: Tue Sep 04, 2007 10:10 am
Car: '92 240 sr powered tuned with a neo
Location: Pace,FL

Post

i'm gonna clean out the iacv today but i'm not gonna take it out but instead take the screw out and use brake cleaner any advice?


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