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Dont Know Whats Wrong

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Old Nov 16, 2007, 02:42 PM
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Dont Know Whats Wrong

Just the past week or so i noticed that my rpms were droping real low when i would be sitting still , it will drop below 1000 and almost die but then go back to normal..... now i notice that if i take it out of gear really fast it the does the same thing . I took it to the dealer ship down here and its not throwing any cels so they cant find anything wrong with it so i test drove with one of the workers to show them but they still dont know what it could be. I am from AZ but I just got stationed down here in Louisiana so i dont know of any good places to take it to.
any help would be apreciated
Old Nov 16, 2007, 03:05 PM
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What mods? Did you install or do something to the car before the problem started?

I know there is an idle control system in the throttle body, but it throws the P0505 CEL if it malfunctions
Old Nov 16, 2007, 03:13 PM
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Originally Posted by iturregui
What mods? Did you install or do something to the car before the problem started?

I know there is an idle control system in the throttle body, but it throws the P0505 CEL if it malfunctions


All i have is TBE Intake BOV and this was installed about a year ago
Old Nov 16, 2007, 03:19 PM
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Could be your BOV, is it VTA or recirculated?
Old Nov 16, 2007, 03:30 PM
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Originally Posted by FedEvo8
Could be your BOV, is it VTA or recirculated?
its VTA
Old Nov 16, 2007, 03:58 PM
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Originally Posted by msaenz
its VTA
there is the problem... you need to recirculate the air back into the intake
Old Nov 16, 2007, 04:19 PM
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Originally Posted by evolved83
there is the problem... you need to recirculate the air back into the intake
But why would this just start happening now?
Old Nov 16, 2007, 04:30 PM
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Likely a mixture issue that wasn't as apparent in AZ due to low humidity possibly altitude as well...all these add to mixture changes and since LA is at or below sea level in most places...your issues are now more evident. ( not to mention the VTA miture issues--but my statements are taking that prob into consideration)
Old Nov 16, 2007, 05:03 PM
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Originally Posted by meckert
Likely a mixture issue that wasn't as apparent in AZ due to low humidity possibly altitude as well...all these add to mixture changes and since LA is at or below sea level in most places...your issues are now more evident. ( not to mention the VTA miture issues--but my statements are taking that prob into consideration)
Yep, the problem is the BOV. If you log with a wideband you will see very rich spots when you let off the gas, because the air that the BOV vented off was measured to make the right mixture
Old Nov 16, 2007, 05:05 PM
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I had the HKS BOV and I was having similar problems.As soon as I put the IX BOV back on the car ran fine.
Old Nov 16, 2007, 05:18 PM
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are you using the hks intake?
Old Nov 16, 2007, 05:37 PM
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VTA kills MAF equipped evos...well not kills but your idle will suck and you lose power between shifting...RECIRCULATE IT FTW!... ...good luck!
Old Nov 16, 2007, 06:04 PM
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Thanks for the advice everyone i will be changing it here shortly
Old Nov 16, 2007, 07:25 PM
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I had this same problem with my car it was the TPS sensor I think. It had fallen off cause the little metal clip wasn't on.
Old Nov 17, 2007, 08:25 AM
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Originally Posted by Joshs EVO
I had this same problem with my car it was the TPS sensor I think. It had fallen off cause the little metal clip wasn't on.
Whats the TPS sensor and is it an easy fix?



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