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Old 06-17-2013, 09:21 AM   #1
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High idle

What would cause my jeep to idle so high? It's idling around 2k. Vaccum lines all seem fine

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Old 06-17-2013, 05:17 PM   #2
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Double check all vacuum connections, could be a hairline split in connection or a small wear hole in a line...it does not tkae much of a leak to affect the idle.

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Old 06-17-2013, 05:45 PM   #3
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also check to make sure your the leak isn't coming from your exhaust manifold bolts being loose. That will cause a high idle as well
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Old 06-21-2013, 12:25 PM   #4
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I have the same thing but it goes away after time I'm assuming it might be trying to warm the engine up but I just went through a winter with it and it didn't do this before now it's summer
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Old 06-21-2013, 07:40 PM   #5
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What engine? 4.2, 4.0 or 2.5? If the choke kick down on the 4.2 is stuck, it will idle high like that.
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Old 06-21-2013, 07:50 PM   #6
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I have a 4.0 year 95
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Old 06-24-2013, 06:25 AM   #7
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Well, that shoots that theory A couple other things. If you have a temp gauge, does it appear to be working properly? If the temp sensor goes out, it sends incorrect signals to the fuel injection that can make the idle change. Other thing would be a vacuum leak in the brake booster. If you can't find any leaks in any hoses, the booster itself may be leaking. Can you hear any whistling coming from the firewall area?
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Old 06-24-2013, 11:38 AM   #8
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Originally Posted by 88Sahara View Post
Well, that shoots that theory A couple other things. If you have a temp gauge, does it appear to be working properly? If the temp sensor goes out, it sends incorrect signals to the fuel injection that can make the idle change. Other thing would be a vacuum leak in the brake booster. If you can't find any leaks in any hoses, the booster itself may be leaking. Can you hear any whistling coming from the firewall area?
I dont hear any vaccum leaks anywhere and my temp sensor is reading correct temp...also one thing my oil pressure guage is going all over the place...I think the sensor is just going out...because ive checked for vaccum leaks with snoop ( if you dont know what that is it is a fluid that bubbles when there is a leak)
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Old 06-24-2013, 04:54 PM   #9
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Hopefully that will find it whatever it is. We chased a vacuum leak on an S-10 for years. Knew it was there by how the engine acted, but couldn't find it. I guess we finally replaced enough parts to fix it.
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Old 06-24-2013, 05:03 PM   #10
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your floor mat is stuck on your gas pedal.....
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Old 06-24-2013, 05:08 PM   #11
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your floor mat is stuck on your gas pedal.....
I dont have a floor mat nor carpet
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Old 06-24-2013, 05:56 PM   #12
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I dont have a floor mat nor carpet
ok..then its not that

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