2005 TJ Rubicon with random automatic transmission slipping

[AjRagno]

Are you saying that you’re driving with O/D off (orange light on button illuminated) and then the issue occurs and the light turns off?

TCC means torque converter clutch. The TCC will lock up in third and forth gear. The action is similar to how a clutch operates in a manual transmission except that the torque converter fully engages (locks) to transfer power.

You want to look at the connections at the transmission.

 

[Dcovi92]

Are you saying that you’re driving with O/D off (orange light on button illuminated) and then the issue occurs and the light turns off?

TCC means torque converter clutch. The TCC will lock up in third and forth gear. The action is similar to how a clutch operates in a manual transmission except that the torque converter fully engages (locks) to transfer power.

You want to look at the connections at the transmission.

Yes. For those two weeks I was driving with the O/D off. The light was illuminated when I took off and when the slip happened the light would go back off. I wanted to see if the slipping was occurring while not using the 4th gear and it was. I believe I’ve had it do the slip in all gears but first. The slipping has also occurred at the base of a hill(not yet going up) in 2nd

Ahh okay. Will look at all those connections here in about 2 hours.

 

[AjRagno]

The O/D circuit is very basic. Pressing the button simply grounds the circuit, locking out 4th gear. I don’t know why slipping would remove the ground though unless, perhaps, the PCM is momentarily losing power or ground.

If you’re slipping in multiple gears, maybe start by checking the level and adding fluid. Unless you’re already overfilled, you can safely add 1/2 qt. and see if that helps. Just make sure you only use ATF+4.

 

[Jerry Bransford]

Just checking the basics here.... are you checking the ATF level while the engine is running? Is the ATF LEVEL ALL THE WAY up to the full mark on the dipstick? Has anyone added any other type of ATF besides the required ATF+4?

 

[Dcovi92]

The O/D circuit is very basic. Pressing the button simply grounds the circuit, locking out 4th gear. I don’t know why slipping would remove the ground though unless, perhaps, the PCM is momentarily losing power or ground.

If you’re slipping in multiple gears, maybe start by checking the level and adding fluid. Unless you’re already overfilled, you can safely add 1/2 qt. and see if that helps. Just make sure you only use ATF+4.

Alright. Right now I’m right at the full line for tranny fluid. I should add 1/2 quart to that?

 

[Jerry Bransford]

Alright. Right now I’m right at the full line for tranny fluid. I should add 1/2 quart to that?

And that was measured while the engine is running, right? If it's at the full line with the engine running it's ok as is but it definitely wouldn't hurt to add 1/2 to 1 quart. Mine is routinely 1 quart extra so it won't suck air on a climb or descent.

 

[Dcovi92]

And that was measured while the engine is running, right? If it's at the full line with the engine running it's ok as is but it definitely wouldn't hurt to add 1/2 to 1 quart. Mine is routinely 1 quart extra so it won't suck air on a climb or descent.

Yes sir! Cool. Thanks for the info!

 

[Jack5]

Yes sir! Cool. Thanks for the info!

What was the final result or cure for your random transmission slipping problem ? I have the same thing happening. Thanks

 

[05’tj Rubacon]

Might be just the beginning of things to come. Over the course of a year; mine started slipping, then running hot, then converter shudder, then solenoid code, and finally limp mode. Currently deciding between replacement and rebuild. 120K miles

Well my transmission went out at just over 100000 miles one time it didn’t have a reverse but I was wheeling so I thought it might be the angle of the departure of my jeep at the time I got off the hill didn’t happen again, do you have an on the freeway? Also, that started grinding, pushed it in the neutral turn off the freeway the tranny wouldn’t go back in the year just grind transmission failure transmission failure? Still in the shop still to be determined

 

[UnSettled_Smoke]

What was the final result or cure for your random transmission slipping problem ? I have the same thing happening. Thanks

Any update?

 

[UnSettled_Smoke]

What was the final result or cure for your random transmission slipping problem ? I have the same thing happening. Thanks

Any update?