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Old 04-04-2011, 08:46 AM   #1
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Help from the TJ GURU's please

My issue is that I have the code for the Torque converter lockup. Leading up to my question;
I have had this error for about a month now, weather didn't cooperate for me to change fluids in the tranny until this weekend. I also installed a Curry deep tranny pan with the drop pickup and filter assembly. After changing the traant fluid and installing new pan and filter, I filled everything back up check levels after warm up and after cycling through the gears. Still have the same issue as before.
The strange part of all this is I think the circuit is fine due to every time it sits for a while and I take off the first time I hit 45 it shifts right into the sudo OD
but wont shift back into it until it is parked for a bit again.

Please advise as I feel it still works but then again it is not working all the time.

2001 Jeep Wrangler
6 cylinder
Auto transmission

Thank you in advance

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Old 04-04-2011, 12:10 PM   #2
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Have you removed the torque converter lockup circuit's electrical connector from the rear of the transmission and cleaned and reseated it yet? This connector only has two connections so don't mistake it for the larger NSS (neutral safety switch) connector. You can use ordinary WD-40 to flush dirt/grease/ATF/etc. out of the connector's pins and female pin jacks. Simply shake or blow the excess WD-40 out of the connector when you're ready to reconnect it.

If that doesn't do it, then you can look at things like your TPS (throttle position sensor) and maybe even the temperature sensor. The lockup circuit is controlled by the PCM and it determines when to lock up your 32RH based on vehicle speed (speedometer cannot be intermittent), coolant temperature, and throttle position as indicated by the TPS. It is supposed to lock up at 35 mph with light throttle.

If you ever have an erratic idle or the engine does not rev smoothly as you step on the accelerator pedal, that might indicate a bad TPS.

If none of that indicates a problem, then it's time to get inside and check the torque converter control solenoid inside the transmission. I never needed to do that when I had that same transmission (32RH) but I have heard it can be a potential cause of that issue.
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