Idle issue/ vacuum leak - figuring it out and need some help
08-24-2007, 03:46 PM
#1
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Idle issue/ vacuum leak - figuring it out and need some help
Hey guys,
So I've been battling a idle and vacuum leak recently.
1st, I found a plug that the mechanic forgot to plug in under the intake manifold. Plugged it in.....sweet.....tracking idle problem solved. BTW - could anyone explain what I plugged in??
2nd, I had a ginormous vacuum leak. Popped the hood and found the issue. The bolt (circled) in the picture below was missing. So - I put a piece of hardware in to at least stop the leak.
Now - I cannot adjust my idle. My guess is that whatever was there has some sort of mixing ability. Does anyone have this piece?? Let me know - once this problem is solved, it's on to the NEXT idle issue.
3rd, my throttle will sometimes hang coming off of revs. Could be a TPS adjustment - I'm going to head outside to check in a little bit. It will hang....not all the time....just sometimes. Hang at 3K, 2K....it doesn't discriminate.
Thanks guys. Any help/ advice is greatly appreciated.
TGIF!
So I've been battling a idle and vacuum leak recently.
1st, I found a plug that the mechanic forgot to plug in under the intake manifold. Plugged it in.....sweet.....tracking idle problem solved. BTW - could anyone explain what I plugged in??
2nd, I had a ginormous vacuum leak. Popped the hood and found the issue. The bolt (circled) in the picture below was missing. So - I put a piece of hardware in to at least stop the leak.
Now - I cannot adjust my idle. My guess is that whatever was there has some sort of mixing ability. Does anyone have this piece?? Let me know - once this problem is solved, it's on to the NEXT idle issue.
3rd, my throttle will sometimes hang coming off of revs. Could be a TPS adjustment - I'm going to head outside to check in a little bit. It will hang....not all the time....just sometimes. Hang at 3K, 2K....it doesn't discriminate.
Thanks guys. Any help/ advice is greatly appreciated.
TGIF!
08-24-2007, 03:59 PM
#2
resident n00b
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Thats your idle control screw.
you'll want to replace that with the proper parts.
check yout TPS to make sure it closes all of the way & clicks at the last second.
also make sure your throttle cable isn't catching or sticky.
you'll want to replace that with the proper parts.
check yout TPS to make sure it closes all of the way & clicks at the last second.
also make sure your throttle cable isn't catching or sticky.
08-24-2007, 04:12 PM
#3
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there are several things under the intake, IAC - knock sensor - thermal valve - temp senders (2) - old venturi setup, misc vac connections...need more info or a pic
08-24-2007, 04:21 PM
#5
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Thread Starter
The TPS clicks immediately when I move the throttle - so I believe that means it is adjusted properly. No stick on the cable - the throttle was disassembled and cleaned and is smooth as a babies butt (I also thought it was a simple mechanical stick issue).
Venturi system is gone. Plug was probably 1" x 1/2"
Anyone know where I can get a new idle screw?
Venturi system is gone. Plug was probably 1" x 1/2"
Anyone know where I can get a new idle screw?
08-24-2007, 05:52 PM
#6
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call Randall Johnson, Park Place Porsche in Dallas - they stock em since he owns 2 944T, he sells things at good prices to RL members. 214-770-4662. I got a spare from him last month to keep in my tool kit.
