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Old 10-29-2010, 02:30 PM   #1 (permalink)
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Default very high idle help

2005 forenza lx wagon automatic
got the vacuum leak code found the bad hose to the throttle body from the valve cover and replaced it, car idled fine before now it idles between 2000-3000 rpm
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Old 10-29-2010, 02:41 PM   #2 (permalink)
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probably what you need to do is reset the ecm. your car got used to running with a vacuum leak and now that its fixed its still running as if there is a leak. all you have to do is disconnect the battery, step on the brake peddle for 5 min or so to drain the charge out of the car, then reconnect the battery. after that take it for a spin and see how it goes. good luck
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Old 11-01-2010, 08:53 PM   #3 (permalink)
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hey 7-even I did this on my car, but it didn't solve the problem.
I changed the Idle regulator valve and the TPS. I saw every vacuum hose but there all seem to be fine but it still does it.
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Old 11-01-2010, 10:47 PM   #4 (permalink)
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im not really sure than. is your butterfly sticking?
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Old 11-02-2010, 07:38 AM   #5 (permalink)
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Sry I had to be more specific.

no it's not.
I quess maybe is a sensor but no sure, because the check engine light is not on.
My car is not idling high, it's only the rpm is going up and down every time when the car reaches its temp.
It goes like this 900-1000 up and down.
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Old 11-02-2010, 12:23 PM   #6 (permalink)
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should have been more specific when i replaced hose car was still running fine, disconnected battery to reset computer (need sticker and check engine light must go out) and that's when issue started, idle does kick down some now to 1500 rpm but even after it warms up sometimes when i shift into park it will go up to 3000 rpm. I will try to clean throttle body, hope it helps ?!
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Old 11-02-2010, 12:29 PM   #7 (permalink)
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hey lumpylowell I had the intake and throttle body cleaned, but the problem is still there, maybe are vacuum hoses.
Maybe I put the vacuum hoses wrong.
That's why I started another topic, so can another forum member post pics but still nobody hasn't posted any pics
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Old 11-03-2010, 12:55 AM   #8 (permalink)
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still need help
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Old 11-03-2010, 07:58 AM   #9 (permalink)
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hey Lumpylowell I think I got mine sort it out, I just adjusted the idle screw and the problem was gone. You should try it.

And also before adjusting it, did you remove the idle regulator valve sensor on the throttle body, sometimes it gets stuck.

Clean the sensor with carb cleaner and also spray the carb cleaner in the housing where the sensor sits.

the sensor is big and round and when removed it has a tip.

And before all this please remove the negative on the battery.

Cleaned the sensor and housing then reinstall the sensor and reinstall the negative.

Hope this helps.
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Old 11-03-2010, 01:51 PM   #10 (permalink)
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did you take pics?
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