I have 1995 F-150 auto trans problem due to intermittent very hard upshifting; usually after 20 min driving.?

Question:
Been to three dealers and one trans shop. No luck. Very hard shifting on auto trans - intermittent. No code generated but after hard shifting causes the speed sensor to react and put out code. Replaced it but not the cause. Can it be MLP sensor or is it possible transmission range sensor? Any comments appreciated. thanx!

Answers:

If a vehicle sits for long periods of time, does it cause atrophy or otherwise damage the engine?

Unfortunatley this is one of those live with it scenarios. What is going on is the seals inside the transmission are drying up and becoming brittle allowing the fluid to take different paths. Best scenario would be to have a regular transmission service and put in an additive designed to re-juvenate the seals.

Ebcm relay circuit is coming up as code.please help me/////?

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Good luck.

Urgent Help with my car battery needed?

hey, i just fixed one for the same problem, it was a bad tp sensor, the tp (throttle position) will sometimes mess up and the pcm doesnt know how much u have ur foot on the gas and will make the trans do wierd stuff, not saying same problem as urs, just funny i had same problem today.
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