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Old 07-29-2009, 04:03 AM   #1
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SVT W/ PWSC Stall Issue

I was wondering if anyone else was having the same idle stall issue with the PWSC. Every once and a while you will be at a stop light or just let it idle and the car will stall out. Right before it stalls it does some weird crap where the rpm's will go up to like 1500 drop to like 400 or 500 the car will recover and go back up to around 1500 drop back down and sometimes idle back out and stay around 800-900. But everyonce and a while it wont catch itself and just stall out. Any ideas? I have PWSC with their tune and all original PW's parts, Torsen LSD, and Stage 3 CM.


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Old 07-29-2009, 07:00 AM   #2
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Mine does that sometimes with the a/c on and mine is mostly stock...heard that is common on a SVT??
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Old 07-29-2009, 08:43 AM   #3
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Yeah, I had this problem then I took the intake apart to the SC houseing and checked the Throttle body postion sensor. mine was full of oil. So what I did was bought a new throttle body, and sensor, and I put a one way valve in line with the head breather tube.



This way air can go into the head, but unmetered air cannot go into the intake. Thus keeping the TB and TPS clean. and not doing the crazy idle.


By the way does your car die when you are turning the wheel?
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Old 07-29-2009, 11:32 PM   #4
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Yeah, I had this problem then I took the intake apart to the SC houseing and checked the Throttle body postion sensor. mine was full of oil. So what I did was bought a new throttle body, and sensor, and I put a one way valve in line with the head breather tube.



This way air can go into the head, but unmetered air cannot go into the intake. Thus keeping the TB and TPS clean. and not doing the crazy idle.


By the way does your car die when you are turning the wheel?
Can you just clean TB and TPS and put it back to together. Or is it better to just replace them,I have a PWSC on my 04' SVT and it does exactly the same thing.Just wanting to find the cheapest way to solve the probelm.
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Old 07-29-2009, 11:47 PM   #5
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I'd bet TPS. I'm on my 3rd one already and they are known to fail and cause idle problems.
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Old 07-30-2009, 01:56 AM   #6
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Thanks for the ideas of things to check, ill check my TPS tomorrow morning. I might just go buy a new one anyways.
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Old 07-30-2009, 07:27 PM   #7
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Quote:
Originally Posted by cdsilver02 View Post
Yeah, I had this problem then I took the intake apart to the SC houseing and checked the Throttle body postion sensor. mine was full of oil. So what I did was bought a new throttle body, and sensor, and I put a one way valve in line with the head breather tube.

http://img.photobucket.com/albums/v2...20090392-1.jpg

This way air can go into the head, but unmetered air cannot go into the intake. Thus keeping the TB and TPS clean. and not doing the crazy idle.
Doesn't that negate the purpose of the valve cover breather? If anything, I would put a catch can in-line.

The air in there should be metered unless you open the oil filler cap.
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......hmm if that works then if i put a spinner on my butt hole and rip one will i be able to run faster. ...idiots
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Old 07-30-2009, 11:47 PM   #8
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There was no oil in my TPS but the spring inside was broke, so i replaced it with a new one for $40.32 :) so far no stalling, it idles perfect.
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Old 07-30-2009, 11:49 PM   #9
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Good to hear.
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Old 07-31-2009, 12:08 AM   #10
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Quote:
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Doesn't that negate the purpose of the valve cover breather? If anything, I would put a catch can in-line.

The air in there should be metered unless you open the oil filler cap.
All I know is under boost there would be air and oil coming in which eventually caused the TPS to fail and my TB to have it's center bearing slip out of the seat. This happened twice. So, this is what I did to fix it. I don't think air is supposed to be going into the SC from the VCB tube. Air is only supposed to go into the VC from the air filter.
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