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Overdrive problems

Tiny
CHUCKLEYIV
  • MEMBER
  • 1996 JEEP CHEROKEE
  • 180,000 MILES
Automatic tranny, 4.0L. Driving down 15-20 min on freeway. Pops out of overdrive into neutral. Shifting down to "3" doesn't help. However "1-2" gear works. Put car into neutral, turn off then on again, no problems. I have replaced the TPS, any ideas what it could be? I don't have a diag tool :(
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Sunday, September 4th, 2011 AT 5:45 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
It could be a vehicle speed sensor. Have the computer scanned to identify if there are any trouble codes stored.
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Sunday, September 4th, 2011 AT 10:32 PM
Tiny
CHUCKLEYIV
  • MEMBER
  • 2 POSTS
Thanks Jacobandnickolas for the reply.

I found a link, and did the ignition on/off 4 times to get the engine light blinking. I didn't get anything out of the computer. I only got code 12(battery disconnect, changed battery not too long ago) and 55 (end code). I'm still baffled. Anymore input?
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Sunday, September 4th, 2011 AT 11:20 PM

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