High Idle
Fleet Mechanic
Joined: Aug 2015
Posts: 1,828
Likes: 359
From: Candy Mountain
If the idle dropped appropriately then you should not need to adjust the stop screw.
If the closed TPS value is less than 1v and the signal smoothly progresses as the throttle is opened then the TPS should be good.
That leaves you with a bad IAC, wiring damage or computer problem.
If the closed TPS value is less than 1v and the signal smoothly progresses as the throttle is opened then the TPS should be good.
That leaves you with a bad IAC, wiring damage or computer problem.
Logistics Pro
Joined: Nov 2013
Posts: 3,922
Likes: 1,192
From: Mojave, Ca
That means your IAC valve is being commanded 100% open or is shorted to a ground-wire. Since your KOEO and KOER test didn't throw any errors codes for this, it leaks me to believe that your ECU is commanding the IAC valve open. A faulty TPS sensor can do this... I'll do some research and see what else can cause the IAC valve to remain 100% open.
Thread Starter
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Cross-Country
Joined: Jul 2003
Posts: 96
Likes: 1
It turned out to be the tps sensor, also 02 sensor is bad going to replace it
. The idle dropped to 850 rpm. Thanks all of you for your help.
. The idle dropped to 850 rpm. Thanks all of you for your help.
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