Question about 1999 Jeep Wrangler

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My 1999 Jeep Sahara will start just fine, but will sometimes surge during warmup. Then after it warms up, runs fine. However, sometimes, if I turn it off, then restart alittle later, it does not want to start. I know Im not supposed to pump it, but it seems to be the only way it will start. Then, it wont idle, and keeps dying. It will eventually run good if I keep it reved alittle.

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  • Jeep Master
  • 1,153 Answers

Due to the age of your jeep, You need to replace the fuel pump and filter along with replacing the water pump and thermostat as well as coolant temp sensor. Fuel supply and coolant flow and temp sensing is critical to Cold start (open loop) and warm up (closed loop) Idle function and fuel mapping. Change the air filter too.

Posted on Aug 25, 2017

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6ya6ya

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: 1999 jeep cherokee starts hard

have fuel pressure checked ...fuel pump maybe losing prime

Posted on Sep 28, 2008

work4it1

  • 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

Anonymous

  • 4 Answers

SOURCE: 97 Jeep cherokee sport won't idle

Sounds like the idle air control valve...buy a repair manuel and it will walk you through the steps to change it...it's not hard.

Posted on Feb 16, 2009

Anonymous

  • 169 Answers

SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies

you check for miss how is compression

Posted on Aug 29, 2009

Richard Scordino

  • 6982 Answers

SOURCE: 1999 Jeep Grand Cherokee stalls immediately after

check intake manifold air temp sensor and engine coolant sensor...one may be out of range but not enough to turn on dash light. tests and specs can be found in chiltons or haynes, test is done with digital multi-meter.

Posted on Jan 06, 2010

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