Question about 1999 Jeep Cherokee

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Cold starting 1999 Jeep Cherokee will not idle when cold starting without keeping your foot on the accelerator, until engine warms up, then idles, and works just fine

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  • Anonymous Mar 26, 2014

    cold starting

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  • 475 Answers

I had bad oxygen sensors do this.
Check it out with a scanner before replacing it.

Posted on Oct 22, 2008

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1 Answer

1996 Jeep cold start heater location


It likely has EFI (electronic fuel injection) and an idle air control valve that regulate idle speed. They can get gummed and fail to have a fast idle when cold, or get stuck the other way, and have a too fast idle all the or regularly take its time slowing down after you take your foot off the gas. An engine temp sensor can also cause a lingering high idle if it reports the engine as still being cold after warm up.

Aug 15, 2014 | 1996 Jeep Grand Cherokee

1 Answer

My 1997 jeep grand cherokee starts o.k i have no check engine light on, but every now and then the idle will go down for a few seconds and sudden acceleration will occur. this happens regardless of the car...


there is a rpm magnet that bolt on top of your transmission i had a jeep that done the same thing and repleced that and havent had a problem sinceits located on the left top side of your tranny has one little bolt that holds it in and a wire coming off of it that should fix your problem.

Feb 02, 2011 | 1999 Jeep Grand Cherokee

1 Answer

Jeep 2002 grand cherokee dies unless i keep foot on the gas...


The idle relearn needs reset. Keep your foot on the gas at about 900 rpm. Make it idle for about 5-6 minutes. Slowly ease up on the gas until it will idle on it's own, it might take a while. After you get it to idle, it might be idling real low, but on its own, Let it sit and idle until for 20 minutes. After that it should be back to normal. You will have to do this every time you have the battery unhooked for a while.

Jul 27, 2010 | 2002 Jeep Grand Cherokee

1 Answer

The engine will not idle when cold


possibly the coolant temperature sensor is faulty

Sep 05, 2009 | 1995 Subaru Legacy

1 Answer

1999 jeep cherokee wont idle cold


The iac would be my first guess but this troubles me as the when the engine is cold all the sensors are ignored until the fuel system goes into "open mode" but to change the iac is simple 2 screws and unplug the module and instructions come with a new one to tell you how far the air pintle is supposed to be set at,
If you can change your own oil than this is easy.
I did rebuild wrecked vehicles for about 15 yrs and gave it up as back in the day we never wore mask's and hacked up to much hardner so now I just fix them,in a chrysler,jeep dealership of course.

Mar 08, 2009 | 1999 Jeep Cherokee

1 Answer

96 jeep cheerokee won't idle when cold.


its an oldervehicle and sometimes with age they have to be babied to run right.i dont think theres much you can do to make it start and stay running right off the way it used to other than what youredoing now which is probably sitting in it with your foot on the gas until it warms up if my guess is correct. i have a 1994 suburban that i haveto do the same thing to because its just gotten where it doesnt like cold weather.

Jan 28, 2009 | 1996 Jeep Grand Cherokee

1 Answer

STARTS BUT WILL NOT STAY RUNNING


Check the throttle position sensor"tps",or the idle air control "iac" by chance did the battery go dead or was unhooked?
if so the ecu was reset and needs to relearn idle settings by just keeping it running for a few minutes

Dec 29, 2008 | 1999 Jeep Grand Cherokee

1 Answer

Car won't idle without revving when cold and dies when in drive


This Vehicle needs an Idle air control/Idle speed motor. Good Luck

Dec 28, 2008 | 1996 Mercury Grand Marquis

2 Answers

Stalls and wont idle when cold


many automobiles behave that way on a cold start, so you don't have to worry about it. just continue to rev the engine until it is warm!

Sep 09, 2008 | 1999 Isuzu Trooper

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