Question about 1999 Jeep Grand Cherokee

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99 jeep starts but runs at full throttle - 1999 Jeep Grand Cherokee

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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.

Posted on Aug 01, 2010

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Posted on Jan 02, 2017

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1990 jeep wrangler runs rih won't stay running replaced map sensor and temp sensor


which engine,? the have up to 3 choices.
rih?
what are the full symptoms,
did you do the full listed 60k mile tune up on car?
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unless it's a diesel.
starts good
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bogging
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ok stalls 101.
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Feb 05, 2014 | Jeep Wrangler Cars & Trucks

1 Answer

Replaced head gasket now vehicle revs to full throttle when started


check your throttle postioning sensor or just see if when you replaced the gasket if you moved the throttle cable out of position

Feb 15, 2013 | 1999 Jeep Cherokee

1 Answer

99 cherokee 4.0, at. idles rough. anywhere from 200 to 900 rpm. surges up and down at idle. on road it surges, stumbles and jolts while going down the road, runs fine a full throttle. have replaced tps and...


Very very likely there is an intake manifold leak.OR fuel pump playing up.I would start at the intake leak.I do not know what the chips or intakes are that you have on BUT,the symptoms are an intake air leak.Hope this helps you

Oct 31, 2010 | 1999 Jeep Cherokee 4WD

1 Answer

Replaced exhaust manifold on 99 jeep wrangler. turned ignition to start up and engine screams in full throttle, what could be the problem: vacuum, sensor???


The intake manifold is the common culprit for this. It may look like it is flush to the block, but it isnt and is causing a huge vaccum leak. There are two locating dowel pins that the manifold must be flush on before tightning the bolts. The usual problem is that the manifold is resting on top of these pins instead of flush, causing a gap. You have to unbolt the intake and exhaust manifolds, relocate the intake and replace the bolts.

Oct 19, 2010 | 1999 Jeep Wrangler

2 Answers

1996 Jeep Country Wagon. Replaced fuel filter and


does your jeep run rough? idle is real low? and when you are driving and push the gas hard it doesnt want to move? if so it is most likely the mass air flow sensor. i had to replace that 2 or 3 times on my 1999 jeep cherokee

Jun 22, 2009 | 1996 Jeep Cherokee Country

1 Answer

99 jeep cherokee died going down the road. will not start. has fuel but no fire


Check spark to plugs. Possible crankshaft position sensor. Located at rear of engine between engine and trans.

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1 Answer

Broken cables in jeep. what are they?


They are your throttle body cables. You should really make sure that all cables are in proper working condition so you do not have a stuck throttle on you at sometime. It is a safety hhazard

Feb 06, 2009 | 1999 Jeep Grand Cherokee

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