1999 Dodge Truck downshifts

1999 DODGE TRUCK
92,500 MILES • V8 • 2WD • AUTOMATIC
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RUSSEL NEWTON
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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.
Jun 30, 2008 at 10:20 AM
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DOCFIXIT
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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
Jun 30, 2008 at 10:38 AM
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RUSSEL NEWTON
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it does not have a overdrive location it's just D 2 1.
Jul 1, 2008 at 4:20 PM
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DOCFIXIT
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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
Jul 1, 2008 at 4:48 PM