repetitive down shifting on highway (crazy story)

5

Asked by Oct 17, 2014 at 07:26 PM about the 1998 Dodge Ram 1500 2 Dr Laramie SLT Standard Cab LB

Question type: Maintenance & Repair

When I bought my truck I noticed a shifting problem when I went on the highway. Truck
would constantly be shifting gears over 50 mph, down shifting into passing gear and
back up to overdrive. Here is where things got weird. I over heated one day while on
the rode. I diagnosed it as a frozen thermostat. tools in hand I remove the thermostat
on the spot with the help of red gasket sealer and a gallon of spring water and I'm off.
For the following week, intending to replace the thermostat I realize my transmission
problem has completely disappeared. Transmission is shifting like a dream, Really. I
live in New England and it is October so its getting cold. I put a thermostat back in to
get heat, because without it the temperature needle does budge.Got heat and shifting
problem is back just like before. Coincidence,? I think not. I'm going to take the
thermostat out Sunday 10/19/14 to see what happens. If anyone knows what one thing
has to do with the other to cause this PLEASE Please let me know. Thanks for reading.

1 Answer

65,565

The radiator,need,s rodding out or replacing,the tranny coollant line,s run into it to keep,the tranny cool,replace the radiator or have it fixed,should fix the shifting issue.

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