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  #1  
Old 02-28-2014, 12:26 PM
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Unhappy 2006 WK Transmission not shifting

Brief intro:
I bought a used 2006 GC Limited w/5.7 Hemi to help tow my 200hp Evinrude powered bass boat back in 2010. I love the vehicle and performance (not the gas mileage though). My old 1996 GC Laredo 4.0 was slowly starting to fade on me. It suffered a bit in towing the rig.

My son, after many years of driving Ram and Ford trucks, picked up a 2013 Rubicon last year.

Today, the 2006 decided not to even try to shift into gear when I started the engine to leave for work this morning. It was -11 degrees outside and 35 degrees in the garage. All tranny shift positions do nothing. I had to rely on an old Impala to get me to work today.

Where should I be looking first to troubleshoot my transmission not shifting? No CEL is on.
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Old 02-28-2014, 12:38 PM
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Re: 2006 WK Transmission not shifting

Also, Fluid level is good.
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Old 02-28-2014, 12:40 PM
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Re: 2006 WK Transmission not shifting

Welcome to the garage.
Did it not even work in reverse? Eventhough the transmission is fully ele tronically controlled, reverse is a mechanical input to a mechanical valve.
Did you use a scanner to read the fault codes?:
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Old 02-28-2014, 12:56 PM
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Re: 2006 WK Transmission not shifting

Reverse was my first attempt. I tried all positions, shut vehicle off and back on, and tried shifting all positions again, checked fluid, no CEL. I do have a code checker that I could use to read and clear codes but even then it probably wouldn't have helped me get to work in short order this morning. I will look to see if any codes show up tonight. It isn't a dealer version and probably can't look into the transmission control module.
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Old 03-01-2014, 12:00 PM
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Re: 2006 WK Transmission not shifting

I checked the codes today. I had a 700, 841, 944.
700 is a general transmission Control System Malfunction
841 is a tranny fluid pressure sensor/switch A Circuit Range/performance
944 is a Hydraulic pressure unit/loss of pressure

I tried clearing the codes to see if that would help - but didn't.
The 944 code doesn't show in DTC lists, but my Craftsman 87702 CanOBD2 diag Tool did show the code and info.

The weather has warmed up a bit today, so I was hoping that it would at least shift today so I could get it to a shop - but it looks like a tow job now.
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Old 03-02-2014, 03:26 PM
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Thumbs up Re: 2006 WK Transmission not shifting

I had the two filters replaced as well as a tranny flush and torque converter flush at the Jeep dealer after I bought the vehicle. I also changed the fluids in the front/rear transaxles. There are only 10,000 miles on it right now after buying it 3.5 years ago. Mileage = 72900. I use it mainly for towing my boat or driving during the winter.

After reading through many of the posts on this site - I am coming to an realization that the filter installation for the 545RFE is not only critical, but also flawed. The splittiing of the main filter is a flaw in the design as well as the allowance of the filter to come loose from its pressure fit at the seal. There should be some sort of support under the front of the filter so that it keeps the filter from backing out of the seal (a metal coil spring spot welded to the filter maybe). The one bolt holding it in place at the rear isn't good enough.

I am hoping that once my vehicle is towed to the tranny shop Monday or Tuesday, that it is just a filter issue.

Marty
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Old 03-02-2014, 03:48 PM
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Re: 2006 WK Transmission not shifting

Hi Marty,
The P0944 code is a pump loss of prime code. The P0841 code is most probably due to the P0944 code.
The P0944 can have to do with low fluid level, but indeed as well due to a split oval inlet filter or a wrongly installed inlet filter seal. The filter itself will not go out of its seal, the problem normally occurs when the seal is not properly seated in the pump inlet before the filter neck is inserted in the seal. In that case the filter will come loose together with the seal with as a result that the pump only sucks air and the clutches can not be activated and the torque converter not filled. Only strange that this problem appeared at startup. A split filter would be more logical.
If no split filter or loose filter seal are found, the problem could be with the pressure regulator solenoid inside the solenoid block.
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Old 03-02-2014, 07:02 PM
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Re: 2006 WK Transmission not shifting

Thanks I'll make sure the repair shop understands this (I'm sure that they want me to tell them how to do their job)!

Marty
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Old 03-08-2014, 11:18 PM
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Re: 2006 WK Transmission not shifting

GOOD NEWS!
Turns out the issue was due to the main transmission filter coming loose from the pump seal. seal was replaced, tranny flushed and my jeep is back and running for $281. It could have been much worse.

Thanks for your help and all who have put problems into the forum.
The replies and solutions are helpful to all who read through the forum.

While I wasn't doing the work myself, It still gives an owner a good feel for what is going on with their Jeep and can help in diagnosing. The transmission repair shop: Bob's Transmission actually was surprised that I had pegged the problem. Bob said is logging this problem in his bag o tricks. He was very honest and could have cleaned me out if he wanted to... but didn't. He also provided free towing of my vehicle. That is hard to beat!

Marty
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Old 03-09-2014, 12:30 AM
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Re: 2006 WK Transmission not shifting

Good to hear its solved.
Just for the records, did the filter neck come out of the seal, or did the seal come loose from the pump inlet?
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Old 03-16-2014, 06:06 PM
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Re: 2006 WK Transmission not shifting

They said the filter came loose. Didn't say if the seal was on the tube or not. They replaced the seal just because it probably failed in their eyes.
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Old 03-16-2014, 06:37 PM
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Re: 2006 WK Transmission not shifting

Quote:
Originally Posted by SgtsDad View Post
They said the filter came loose. Didn't say if the seal was on the tube or not. They replaced the seal just because it probably failed in their eyes.
Sofar i unly heard from the filter coming loose together with the seal. This is normally because they try to install the seal already mounted on the filter neck. In this way the seal will not seat properly and can come loose over time, together with the filter. This happened already quite some times.
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