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Old 08-26-2013, 01:02 PM   #1
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Vaccum leak

Well this has to be it. I've already replaced the iac, egr, clean the tb, maf, and the plenum. For the most part it runs fine. It's when I have to come to an immediate stop and it wants to shut off. And I noticed that I went through the car wash the other night and when the drier was blowing, my rpms shot up. Cause the drier was in front of my car to start as you casually move through. Please help thank you
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Old 08-26-2013, 02:23 PM   #2
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Any thoughts guys??
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Old 08-26-2013, 02:32 PM   #3
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Any thoughts guys??
You could take some carb spray and lightly spray around the vacuum lines and intake manifold to see if the idle changes, if the idle goes up when you spray a certain spot you'll know you have a leak there
I have the same problem with my 03, my car idles fine when the AC is off but when I have the AC on and try to idle it'll want to stall
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Old 08-26-2013, 02:43 PM   #4
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Alright I'll try that then. I never use my a/c even though it works. Unless it's super hot out I will. Thanks
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Old 08-26-2013, 03:52 PM   #5
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You could take some carb spray and lightly spray around the vacuum lines and intake manifold to see if the idle changes, if the idle goes up when you spray a certain spot you'll know you have a leak there
I have the same problem with my 03, my car idles fine when the AC is off but when I have the AC on and try to idle it'll want to stall
+1

Thats the best way to diagnose yourself.
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Old 08-26-2013, 04:53 PM   #6
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I heard that you should do it on a cold start cause if the engine is hot it may catch on fire?
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Old 08-26-2013, 05:49 PM   #7
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As long as your not spraying it on electrical stuff you should be fine. I've never had something catch fire from it.
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Old 08-26-2013, 06:49 PM   #8
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Ok UPDATE! -- I just had my engine running and I was feeling the hoses and when I squeezed the hose connection from the air intake crossing over to the driver side valve cover, it started to die. Big question, is that normal since I'm cutting the air off?
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Old 08-26-2013, 07:56 PM   #9
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Did everyone go to bed early tonight or what?!?
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Old 08-26-2013, 09:46 PM   #10
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??
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Old 08-26-2013, 10:42 PM   #11
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Quote:
Originally Posted by JB_MUSTANG_V6 View Post
Ok UPDATE! -- I just had my engine running and I was feeling the hoses and when I squeezed the hose connection from the air intake crossing over to the driver side valve cover, it started to die. Big question, is that normal since I'm cutting the air off?
Hmm, ill go do it to mine and let you know if mine cuts out.

---------- Post added at 08:42 PM ---------- Previous post was at 08:41 PM ----------

How did you pinch it? Haha mine is hard plastic so I can't pinch it
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Old 08-27-2013, 08:23 AM   #12
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The hose at the end that's connecting to your valve cover on the driver side from the pcv valve
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