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1999 Dodge Truck downshifts

Tiny
RUSSEL NEWTON
  • MEMBER
  • 1999 DODGE TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 92,500 MILES
My truck started downshifting at about 50 mph, by its self and then won't shift again til about 73mph, but sometimes not even then.
Monday, June 30th, 2008 AT 10:20 AM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Sounds like lock up torque convertor switch acting up or fliud leaking to covertor. Try driving truck in drive out of overdrive. Let me know
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Monday, June 30th, 2008 AT 10:38 AM
Tiny
RUSSEL NEWTON
  • MEMBER
  • 2 POSTS
It does not have a overdrive location it's just D 2 1.
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Tuesday, July 1st, 2008 AT 4:20 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
No overdrive? Well that's a new one on me. In any event there is nothing external that you could do.
Some problem with the valve body / shift solenoids for this to occur. Need to take it to a tranny shop for a dianosis pressurs test ect.
Good luck
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Tuesday, July 1st, 2008 AT 4:48 PM

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