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What would cause this??

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Old Apr 13, 2008 | 01:37 AM
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Default What would cause this??

Ok well ive been having a problem lately of my idle being weird, when i come to a stop sometimes the idle will drop down to 600 rpms and then when i stop completely they will go up to 900 and be fine. I checked the fuel pressure and everything is good so the fuel pump isnt the issue, and i changed my fuel filter a month ago. I havent noticed any vaccum leaks but i do have an exhaust leak but dont think it would cause this, any ideas??? maybe the tune is messed up???
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Old Apr 13, 2008 | 01:59 AM
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O2 sensor?
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Old Apr 13, 2008 | 02:32 AM
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not throwing a code and just changed those to when i changed my fuel filter not to long ago.
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Old Apr 13, 2008 | 05:11 PM
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Ttt...
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Old Apr 13, 2008 | 05:41 PM
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perhaps MAF?
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Old Apr 13, 2008 | 06:08 PM
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IAT sensor?
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Old Apr 14, 2008 | 03:02 AM
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It's not your exhaust leak thats for sure. nothing you have you need a tune for so don't know what would be messed up with it.
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Old Apr 14, 2008 | 04:05 AM
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i've had this problem and it was a vaccum leak. i think mine initially started last summer then the hole gradually got worse over time and finally creat a hole the size of a dime in a pcv hose. double and triple check all you hoses for vaccum leaks, clean sensors and connectors
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Old Apr 14, 2008 | 12:49 PM
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Yeah check everything from the MAF back for leaks. Same thing happened to both mine and my friends car and it was a leak.
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Old Apr 14, 2008 | 01:31 PM
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also pull your idle air control valve and make sure it's clean
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Old Apr 14, 2008 | 04:42 PM
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well i dont have a pcv sytem, im running a breather setup. ill check the hoses and make sure, hell the hose might have popped off the throttle body or something.
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