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idle isue---video

yeti

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Joined
Oct 13, 2010
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803
Location
san diego california
PLEASE ANY IDEAS HELP ...


BEFORE idle SETTLES it surges up to 2200rpms before then stops surging and regulates down to 900-RPMs BEFORE ITS WARM

ALSO ONCE IDLE STOPS SURGING AND IS REGULATED IF YOU TOUCH THROTTLE CAR STALLS.

ANY HELP IS APPRECIATED
heres a cold start
click

and then once warm

click
 

Check the base air idle screw on the throttle body... I've had the one in a dsm i used to drive come out somehow and it idled rediculously low....It was summer time when this happend so it never really was a cold start.
 

1990ggsxnj

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Nov 21, 2008
Messages
525
Location
Blackwood, NJ
Slightly difficult to understand what you're trying to say from lack of periods.
So, what you're saying is the idle is high when you start it but almost dies when warmed up?
So what have you done so far to resolve this issue? Idle Adjustment per vfaq? Logger data? Boost leak test?
If all that checks out ok you may want to look into FIAV blockoff HERE

I just turned it down as far as it would go and JB Welded it. 3 vehicles now that idle like a dream. Rerouted the coolant hoses as well so they no longer go through the throttle body so there is no chance of coolant leaking into were it shouldn't be.
 
Last edited:

yeti

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Oct 13, 2010
Messages
803
Location
san diego california
ya sorry for messed up post im using an on screen keyboard.

ya idles really high wen cold start and than about a few minutes starts surging up to 2200rpm.

then once warm will regulate down to 800rpms, then once hot almost always die if you touch the throttle
 

524of1000

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Oct 15, 2008
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574
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San Antonio, Tx
I say you're running lean and most likely have an intake leak somewhere. Do a boost leak test to find where.
 

yeti

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Oct 13, 2010
Messages
803
Location
san diego california
I stil have a bad TPS, CEL code-14.

And I got a bltester in the mail on the way

I was told I need a new o ring gasket on the idle adjustment screw.

And to pressurize the whole system I put the bltester on the turbo inlet then take off tb elbow and plug that?
 

yeti

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Oct 13, 2010
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803
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san diego california
And none of the vfaq was tryed just the lazy good for nothing visual inspection on all the couplers is about the only thing I've tried
 

The lazy, good for nothing stuff doesn't fix these cars. These steps need addressed if you intend on diagnosing this problem. BLT and idle adjustment via vfaq does wonders for these kind of problems. Corrected 1947's crazy idle. GL
 

yeti

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Oct 13, 2010
Messages
803
Location
san diego california
I know it doesent fix anything, hence the "good for nothing".

But thx for the advice I will be adressing all the ways to PROPERLY do this once the package gets here. For now ill read some vfaq till it gets here.
 

yeti

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Oct 13, 2010
Messages
803
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san diego california
I got a video after I hooked up my boost gauge looks like I get 15 vaccum and about 5lbs of boost so I'm geussing definate boost leak
 

You won't make boost just sitting there and revving the engine. Go drive the car and see what the boost guage does doing a 3rd or 4th gear pull.
 

1990ggsxnj

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Nov 21, 2008
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Blackwood, NJ
With the car possibly running lean than doing a "pull" in any gear is a bad idea. If you're going to post more videos make it of your results doing the basics that were already described to you.
 

yeti

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Oct 13, 2010
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803
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san diego california
Got the. Bltester in the mail it didn't fit so I got my homemade one tightened up on the turbo inlet now I just need an air compressor also one more question do I need to plug pcv tube and other tubes that came from intake
 

yeti

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Oct 13, 2010
Messages
803
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san diego california
Ok little update

I got an air compressor and hookup up my bltester the farthest I got testing was the turbo outlet to jpipe. Gasket. It was busted in half
The whole 20lbs of air was just rushing all out of the turbo outlet to jpipe spot just wondering where did everyone get that gasket I went to all the auto shops and they said the stealership
 

1990ggsxnj

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Joined
Nov 21, 2008
Messages
525
Location
Blackwood, NJ
You can get one at a dealership or buy it from one of the various DSM/VR4 mod supporting sites such as DSMParts.com or ExtremePSI.com.
 
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