700r4 hit and miss OD

[Casey Price]

My truck is a 88 with a 5.7.
I've owned the truck for 2 years. since I've owned it Over Drive has been hit and miss. Sometimes it works sometimes it doesn't sometimes it takes 10-15 miles and decides it wants to shift into OD.
I have replaced the detent cable and output shaft sensor. Is there something I can do to make it work right or anyone know what's going on? Maybe a filter change? Transmissions are intimidating.
Fluid level is good and clean.

 

[whitewheels]

I can just share what I did on my 91...but keep in mind I'm a total newb on these trannys.
I replaced my converter,worked ever since [emoji85]

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[Casey Price]

ok I was hoping for something easier.

 

[man-a-fre]

I believe there is a trans temp switch bolted to the valve body ,real easy to change,it may bad and causing your problem.I have always bypassed them on my transmissions. It prevents tcc application till trans is warm.Its a 1pring silver round switch with a black 2 prong plug i jump the 2 prong plug no negatives on doing so .

 

[PlayingWithTBI]

I don't think the 700R4 had a trans temp switch, at least my 88 doesn't.

 

[man-a-fre]

It will look like this, it will have 2 black wires going in to black 2 prong connector. https://www.monstertransmission.com/700R4-4L60-Temp-Switch-82-93-Used_p_6494.html#.Xw9w-G1KiUk

 

[Casey Price]

I believe there is a trans temp switch bolted to the valve body ,real easy to change,it may bad and causing your problem.I have always bypassed them on my transmissions. It prevents tcc application till trans is warm.Its a 1pring silver round switch with a black 2 prong plug i jump the 2 prong plug no negatives on doing so .

So i can get to it when i change the filter? What about a input sensor? I need another store to look for parts autozone sucks.

 

[man-a-fre]

Yes the temp switch is easy to get to when you change the filter.The input speed senor?not sure

 

[Supercharged111]

Is it not hitting OD or not locking up? If it's not locking up I'd look at the brake switch myself.

 

[PlayingWithTBI]

It will look like this, it will have 2 black wires going in to black 2 prong connector. https://www.monstertransmission.com/700R4-4L60-Temp-Switch-82-93-Used_p_6494.html#.Xw9w-G1KiUk

That's interesting, I don't see anywhere in my .bin that refers to a trans temp switch, only CTS for lockup. Maybe something to look at too?

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