Will not stay running

Tiny
05AQUAMAN
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE
  • 5.2L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I took a round trip of about 334 miles with a 15 hour break. In the middle stopped 3 times on return trip, on second stop noticed the check engine light was on though I could detect nothing wrong vehicle started and ran fine. This morning after vehicle sat for 7 hours went to start, it fired right up upon releasing the key RPM's immediately dropped and vehicle shut off, several attempts, same result, though I can keep my foot on accelerator pedal and keep motor running, also noticed check motor light now off. Also all fluid levels good. Any ideas? Any help greatly appreciated.
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Sunday, September 20th, 2020 AT 3:10 AM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

I would start by cleaning the throttle body as it controls your base idle.

https://www.2carpros.com/articles/stall-at-idle

https://www.2carpros.com/articles/throttle-actuator-service

Can you have codes read at a parts store? It is a free service. Those codes could be a clue as to the failure.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Roy
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Sunday, September 20th, 2020 AT 3:27 AM
Tiny
05AQUAMAN
  • MEMBER
Someone said you can turn a Jeep's key forward and back 3 times and get a code on the odometer?
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Sunday, September 20th, 2020 AT 10:51 AM
Tiny
ASEMASTER6371
  • EXPERT
Yes, if you cycle the key 3 times, it will put it in a diagnostic mode.

There will be 2 number codes based on the number of flashes for the light.

Roy
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Sunday, September 20th, 2020 AT 11:26 AM

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