Question about 1999 Jeep Wrangler

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99 Wrangler TJ Sport 4.0L Straight 6 Automatic Dies while driving

No Codes or dash lights appear, Jeep dies while driving, no coughing, sputtering, or warning. She just shuts off. I have replaced fuel pump-sending unit assembly, coil and tonight the fuel pump relay fuse. I haven't test driven since the relay switch replacement. Battery and Tune up less than a yr old. I have removed my heavy key ring from the ignition as well. Please email me at donna.michelle.smith at gmail.com Thank u

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If it was fuel related it would have sputtered as it ran out of gas. I think it is lack of spark caused by a failing crankshaft or camshaft position sensor.

Posted on Apr 02, 2014

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If the fuel stop flowing it will die down immediately as well as with a wire not making proper contact, the sensors on the crank and cam was mentioned as they will also give problems while moving. you do not mention if it is ok when it stands and you rev it for some time with short bursts. Make sure all earth wires are in good repair.

Posted on Jun 09, 2014

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Posted on Jan 02, 2017

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SOURCE: 1998 Jeep Wrangler Sport codes P0121 and P0122

did you check voltage to sensors if you need help with proedure, contact me, or you may try patrs houses on line in how to section.

Posted on Oct 06, 2008

  • 196 Answers

SOURCE: 1991 Jeep Cherokee stalls, dies while running idling will restart

well i would check the tune up i have owned lots of jeeps and they needs tune ups about every 30,000 miles plugs wires cap rotor take a look at them and go from there

Posted on Jan 11, 2009

co7196
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SOURCE: Jeep Wrangler 1995 coil loses power when fuel pump shuts off!

No, the ignition coil has nothing to do with fuel pump.

Posted on Jun 15, 2009

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SOURCE: 1994 jeep wrangler 6 cyl 5 spd no start

have u ck out the ignition switch [not the key & tumblers],, or the neutral safety switch to see if u have power ,,also seen broken wire at solenoid on starter too,,hope it helped,,

Posted on Apr 05, 2010

  • 14 Answers

SOURCE: 97 jeep wrangler getting spark not fuel. I

Sounds good ninemil, I would also check for any bent or disconnected fuel lines that would restrict the fuel flow as well. I do not know if this has a fuel pump assembly but you should be able to hear it actuate on when the key is in the "on" position. How did it act before you shut it off? Was it harder to start? Make sure you buy a high quality pump (Carter) many of those cheaper brands will fail trust me.

Posted on Apr 21, 2010

Testimonial: "It actually had no spark or fuel . It was the computer. Thanks for answering"

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