O/D lite keeps coming on? slips at highway speeds? - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 05-26-2016
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O/D lite keeps coming on? slips at highway speeds?

New here, Hello. I have an 02 ranger 3.0. Tranny was rebuilt 20k ago. Now my O/D lite keeps coming on and it slips at highway speeds. Before trans was rebuilt I lost D &2 gear. Did I get scammed on my rebuilt or could it be another issue. Any input would help, thanks.
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Old 05-26-2016
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Welcome to the forum.

A Soft parts rebuild usually lasts 12 to 18 months before original or new problems come back.
Which is why the 1 year warranty on most rebuilds.
Soft Parts are clutches, servos, and bands

Not sure if you got "scammed", if all they charged you for was soft parts then you got what you paid for, no "scam" but they should have offered you the option of a full rebuild, it costs more but...........if you are keeping the vehicle then it is worth the extra cost.
And they should have mentioned the downside of not doing the full rebuild

What also needs to be replaced is forward one-way clutch, overdrive drum, if out of round, Main Pump, Ford brand only, others will not last, and new torque converter.
And all solenoids, heat kills them.

People tend to continue to drive automatics that are having problems, which is fine but the problems do create extra heat so when it is time for a rebuild then you really do need to fix it, not just "get it working" with minimum parts swap.


Make sure fluid is at the correct level.
You can add Lucas ATF additive, it won't fix any problems just may make them less noticeable for a time.

Automatics run on pressure, once pressure starts to go down trans starts to act up, usually people lose Reverse or it becomes slow to engage, reverse needs the highest pressure.
Internal gaskets, seals and valves start to leak and pressure goes down.
Like the clutch on a manual, once it starts to slip you know its going to have to be changed, slipping causes more heat and heat causes more wear so.........gotta change that clutch.
And if you just change the clutch disc and not pressure plate or slave then you are pretty much going to have to go back in sooner than later to change them.

Automatics are no different, and your newer parts might be OK, just need to add the other parts that were not changed last time.

Last edited by RonD; 05-26-2016 at 09:58 PM.
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