Question about Jeep Cherokee

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My 1999 Jeeo Cherokee Classic will not start. This is an intermittant problem. It happened Wednesday, I cleaned the throttle body and it worked fine until this morning. Now it is not even turning over. I replaced the battery last month and tested the starter and alternator.

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  • MechxD
    MechxD May 20, 2011

    Do you hear a click like someone tapping a tin-roof when you turn key to start, if yes your starter is shot. If no you most likely have a bad ignition switch. A bad ignition switch will give you a no crank/no start/no run situation and can be intermitent.

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Good morning, I advise you to check the oxygen sensor in these vehicles because if it breaks the oxygen sensor the starter motor turns but does not normally set in motion, as if lacking power to spark plugs.

Posted on May 20, 2011

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Cleaning this will not cause this problem. Check fuses first, All ignition , crank and ecm/pcm fuses. Let me know . Randy

Posted on May 20, 2011

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1 Answer

Please help my 1999 jeep grand cherokee has been dying out. As soon as I start to slow down or I'm at a red light it wants to die out. When I give it gas its fine but once again when I begin to slow...


sounds like a fuel problem. when was fuel filter changed last! if filter is ok, remove and clean the idle air control it may be sticking. this is what controls idleing, on todays cars. ( IAC ). good-day ! there is another thing you can do. clean out around throttle plate of throttle body and make sure aircleaner is ok. this should help!!

Aug 18, 2011 | 1999 Jeep Grand Cherokee

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When i turn on my 1999 jeep grand cherokee laredo the engine revs to 2000+ rpms. this is in park or neutral. when i put it into reverse or drive it goes down to 1100rpms but still too high. it started...


First thing I'd try is to get some carb cleaner and clean out the bore of the throttle body, especially around the throttle plate so it seals properly with the throttle closed. Also spray some into the opening that goes to the throttle control valve. In older vehicles, the gasoline going through the carb would pretty much clean the bore as the engine ran. In injected cars, the only thing that passes through the TB is air, so carbon and gunk buildups can happen there.
This may or may not help you but if you don't do that first and it is gummed up, it will have you chasing your tail trying to find some other problem that isn't there. While cleaning with the engine off, the carb cleaner will essentially "flood" the engine, so if it doesn't start right up, floor it and then crank it over....that will clear it out.'

Apr 22, 2011 | 1999 Jeep Grand Cherokee

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1999 Jeep Grand Cherokee...... Jeeo keep Loosing power completely and turning off.


My jeep will do the same thing when the battery cables get to loose or covered in corrosion. try taking them off and get a terminal cleaner. ( Usually a few bucks at your auto parts store) and clean all the connections and hook it all back up.
Works for me .
Good luck.

Feb 21, 2011 | 1999 Jeep Grand Cherokee

1 Answer

Car starts fine and revs fine but once you put into drive it just dies?


Sounds like an idle control problem due to dirty throttle body/idle control valve interior. Remove air ducting between air cleaner and throttle and then clean throttle interior and throttle plate of any oily grime build-up; use cloth and WD40 spray. If Idle valve can be removed, dismantle it from the throttle body and also give its passageways and valve seat a thorough clean up. Reassemble and this should make a real difference.

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1996 Jeep Cherokee Classic, I-6, Automatic Runs great, normally starts great. Occasionally go to start the car and it is totally dead - no dome light, no door buzzer, nothing happens when I turn the key....


first off clean the battery terminals, then follow the ground wire to the body and engine ensure they have good connections. sometimes the wire on the back of the engine that goes to the body breaks. good luck

Jan 15, 2011 | 1996 Jeep Cherokee Sport

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How do you set the throttle position sensor on 1999 jeep grand cherokee 4.0 litre


That sensor is not adjustable. It slides onto the throttle shaft and is screwed in place to the throttle body. Idle speed is controlled by the computer by adjusting air flow through the idle air control valve. If the idle is too high (you did not say) first clean the throttle body bore and plate, then if necessary remove the control valve, cleaning out the passage in the throttle body and carefully cleaning the valve itself, without turning the plunger. If that does not help, you will need to do electrical testing on that and other components to find out what's going on as well as checking all vacuum hoses attached to the engine for cracks or leaks.

Nov 12, 2010 | 1999 Jeep Grand Cherokee

1 Answer

After starting it will idle down.......during the day at intermittent times the idle surges then it will stop.i start again.fine for a while then the idle surges stalls....happens all day.....driving me...


Sounds like a Dirty IAC ( idle Air Control ) on the back of the throttle body.

You will need to remove the plastic throttle body cover to see it, it is mounted on the back

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2 8mm bolt head ( actually sheet metal screws that have hex heads ) and it will come off.

Take a look at the plunger inside the IAC, to see if it is gummed up, Some throttle body safe Throttle body cleaner should do the trick ( I used 90% isopropyl alcohol and Q-tips to clean mine on my 2001 ).
It should look like this when clean
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I replaced mine after the 2nd time is gave me grief ( seems to happen more often once it starts ) and it was ~ 70.00 at one of the Ford dealers that sell parts online ( tasca ).

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99 jeep starts but runs at full throttle


Make sure that the throttle cable is not damaged or binding and that the throttle plate in the throttle body is clean and closing fully. Also check all vacuum hoses for breaks and good connections and that the idle air control motor (next to the throttle position sensor on the throttle body is working.

Jul 31, 2010 | 1999 Jeep Grand Cherokee

1 Answer

How to install grill on 97 jeeo cherokee


GO TO AUTO ZONE BUY THE HAYNES REPAIR MANUAL LOOK UP CHAPTER BODY WORK.IT HAS GRILLE REMOVAL AND INSTALLATION.

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My son says that he starts up the 1996 Dodge Ram pickup and it starts right away but if he doesn't keep his foot on the gas pedal for 30 seconds to 2 minutes or so, the truck dies. It will start up again,...


It could also be carbon build up on the throttle body, but regardless the cure is the same. Your going to need to clean the throttle body and the idle air control valve (IAC). With a can of throttle body cleaner, (follow instruction on the can) clean the throttle body blade and the IAC passage way in the throttle body and IAC. Once the throttle body is cleaned, with the engine off, turn the ignition key to the on position (engine not running) and wait for 30 seconds and then turn if off for 10 seconds and then start it. This should reset the IAC, if it did not work do it again and see if it helps. If not clean out the IAC passage way again. The turning on and off the ignition reset's the IAC and it may still be stuck with carbon build up. Once the engine has started, Note there will be lots of smoke form the tail pipe, that's normal. It's just the left over throttle body cleaner and carbon being burn off, take's not more then 10 min to burn off. Good luck and this should keep you from replacing the IAC. Oh and don't use Carb cleaner, Carb cleaner is to corrosive to the throttle body gasket.

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