Question about Jeep Wrangler

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99 jeep 6cyl. runs fine but on long trip if you give it gas it like it runs out of fuel just holdpetal steady it run on stop an let it sit a while it runs fine again

Have put new coil wires cap roater an wires an crank sencor

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  • Gene Toney Nov 01, 2012

    Runs fine 125 miles early in day then coming home holding steady at 65 to 70 miles per hour then in evening when it starts just running along hit grade give it gas then iit just miss es then all way home like 50 miles just like its running out of gas think it fuel pump or computer but no codes new wires plugs cap rotar button the first time it just miss about every 10 to 20 miles this time worst just give it gas like its not getting fuel let off an hold steady it runs fine just can,t get any speed up get home sits 30 45 min. then runs fine on short trips 20 30 miles

  • Gene Toney Nov 01, 2012

    new crank sesor on it also

  • Gene Toney Nov 01, 2012

    had scan on it every thing showed fine

  • Gene Toney Nov 04, 2012

    new air filter

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I noticed that you replaced all of those parts but didn't list if you replaced the air filter. Don't be embarrassed if you over looked it. I've done that myself a couple times.

Posted on Nov 01, 2012

  • Gene Toney Nov 01, 2012

    yes new cold air filter .

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I'ts quite possible that your distributor is installed one tooth off and is too far advanced, causing the plug to fire before the intake valves are closed completely. Turn it one tooth counter-clockwise and try it again.

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Check fuel filter and air cleaner, fuel pump or fuel pump relay

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SOURCE: 94 jeep grand cherokee missing after it gets warm

YOU NEED TO HAVE IT SCANNED TO ISOLATE WHICH CYL. PROBALY AN INJECTOR OR CONNECTOR OR CRANK SENSOR LEAD RUBBING INTAKE

Posted on Jan 28, 2009

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SOURCE: stopped while running

I had the same problem. I found out that the fuel pump was not putting out enough pressure. changed the pump and bam down the road I went.

Posted on May 10, 2009

redbeard00
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SOURCE: 99 jeep cherokee sport 4.0l 6cyl voltage will go to 19v

The problem sounds intermittent, if you put volt meter on the battery while it is at that 19volt mark/reading(on the gauge cluster) you will be able to see if it is true. If your alternator is really charging over 16volts the lights should be getting brighter then usual and/or they are burning out. Find out ASAP, if the alternator has a defective voltage regulator, it needs to be replaced. Prolong use will damage components.

Posted on Jun 18, 2009

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