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Check Engine Light On

Tiny
HFRICK
  • MEMBER
  • JEEP WRANGLER
1999 Jeep Wrangler Sport; 6cyl; A/C; Automatic
75K miles on odometer; engine rebuilt @ 50K after throwing a rod
No odd sounds (that's weird, heh?); Some leakage from xfr case
Question: How to reset the "Check Engine" light? I replaced the thermostat and the serpentine belt. In my haste, I cranked the engine up to check for coolant leaks BEFORE INSTALLING THE NEW SERPENTINE BELT (Dang it). Might have run 30 seconds before I realized what I'd done. Now the Check Engine light stays on. I think because some kind of failure code was set in the computer. Am I right and is it an easy thing to reset?
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Tuesday, September 11th, 2007 AT 3:27 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If you have an Autozone within the area bring it in its a freebie service. Perhaps it needs a computer relearning. It takes a scan tool to clear the CEL/MIL/SES
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Tuesday, September 11th, 2007 AT 3:39 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
If it was my Jeep I would go to Autozone or really any parts store today, and get the codes read, write em down, and they can reset the MIL for you! They usually do this free.
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Tuesday, September 11th, 2007 AT 3:40 PM
Tiny
HFRICK
  • MEMBER
  • 4 POSTS
Much thanks, my friends.
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Tuesday, September 11th, 2007 AT 4:02 PM
Tiny
HFRICK
  • MEMBER
  • 4 POSTS
One more data point. When I went to take it to Autozone, the warning had apparently reset itself. Bulb test goes at start-up. Then light turns off. I'm assuming that I finally cycled the engine enough times with the serpentine belt installed that the computer concluded there was not a problem after all.
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Wednesday, September 12th, 2007 AT 12:08 PM

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