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Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

Weird Idle ??

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Old Dec 9, 2004 | 12:02 PM
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Weird Idle ??
Ever since I put my Blower on Im getting a fluctuating idle...after the car is fully warmed up my idle fluctuates 100 or 200 so rpms at idle...Its really annoying because the V1 blower is kidna loud so as its moving up and down the blower is making this more noticable

What could be a cause of this ?? I just replaced the TPS, and the IACV was cleaned not too long ago. does it sound like a vaccum leak of some sort

-matt
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Old Dec 9, 2004 | 12:06 PM
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Yes sounds like a Vac leak somewhere. I have one also but Im stupid and can't find it.
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Old Dec 9, 2004 | 12:07 PM
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when you put the tps back in did you check the resistance at both closed and WOT positions? It could be that or a vacuum leak possibly.
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Old Dec 9, 2004 | 12:24 PM
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Originally Posted by cardana24
when you put the tps back in did you check the resistance at both closed and WOT positions? It could be that or a vacuum leak possibly.
Well I replaced the entire throttle body...the TPS was in the factory spot

-matt
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Old Dec 9, 2004 | 12:41 PM
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I would just check it anyway, because I was having a similar problem when I put on my PF TB.....the TPS is extreamly sensitive as I found out per fluke multi meter. My idle would fluctuate about 100-300 RPM. So I pulled the tps off and set it to .5 ohm (closed) and 4ohm at WOT. Its worth checking...its easy to do.
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Old Dec 9, 2004 | 12:46 PM
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3 words:

Throttle Body Gasket.
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Old Dec 9, 2004 | 01:01 PM
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Originally Posted by iansw
3 words:

Throttle Body Gasket.
Its fairly new, but I guess Ill order a new one and pop it in

-matt
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Old Dec 9, 2004 | 01:04 PM
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Well - jsut to be sure - stick your hand over the point wehre the gasket is with the car running.

see if you feel any suction there.

Next step is to take a spray bottle filled with a soap/water mix and spray it all over the SC piping, hoses, and manifold to find the leak.

Spray an area then rev the engine - see if you get bubbles.
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Old Dec 9, 2004 | 01:37 PM
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I really does sound like a vacuum leak. What vacuum are you getting? TPS is also a good thing to check.
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Old Dec 9, 2004 | 01:46 PM
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My idle has also been acting up. Usually it sits at 575-625 rpm but recently it started to sit sometimes around 800 rpm. Sup with that?
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Old Dec 9, 2004 | 02:16 PM
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Originally Posted by I30tMikeD
I really does sound like a vacuum leak. What vacuum are you getting? TPS is also a good thing to check.
Idle fully warmed up im gettin 20-22 on my boost gauge...sits at around 18 when warming up

-matt
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Old Dec 9, 2004 | 07:14 PM
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matt, what did you ever do about your bov situation. Did you figure out the right adjustments?
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Old Dec 9, 2004 | 11:10 PM
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Originally Posted by vortechpower
matt, what did you ever do about your bov situation. Did you figure out the right adjustments?
No not really...im ordering something different and will sell this greddy through the .org

-matt
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