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Engine shuts off when smog reader is plugged in

Tiny
JIMMATTSON6
  • MEMBER
  • 2006 JEEP GRAND CHEROKEE
  • V8
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
There is no engine light on. Had the transmission rebuilt last year, they replaced the computer board in it. I need to get the car smogged, but when they plug the reader into the car, the car turns off. Any ideas?
Tuesday, July 24th, 2018 AT 8:30 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

Have you had any other shop try to plug in to your car?

Go to a parts store and see if they can connect. It may be the smog testers computer.

Roy
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Wednesday, July 25th, 2018 AT 2:54 AM
Tiny
JIMMATTSON6
  • MEMBER
  • 3 POSTS
Hi Roy, I have had the same issue at two different smog stations.
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Wednesday, July 25th, 2018 AT 8:08 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yep, they all use the same machines and the same software.

That is why I suggested to try a parts store to see if they can communicate with the modules.
Otherwise you may have a failed PCM.

Roy
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Wednesday, July 25th, 2018 AT 8:12 AM
Tiny
JIMMATTSON6
  • MEMBER
  • 3 POSTS
Thanks Roy, I will take it into a parts store.
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Wednesday, July 25th, 2018 AT 8:30 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, keep me updated.
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Wednesday, July 25th, 2018 AT 8:37 AM

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