Transmission-related problem?

SJBrooks · **Joined:** Tue Mar 11, 2014 11:01 am **Posts:** 42

Hi all,

My wife's '06 [107,000 miles (doing the timing belt job this month)] 4x4 has encountered a problem. While driving with cruise control engaged at any speed, if the "accelerate" button is pushed, the vehicle picks up speed normally. If at speed using cruise and the "cancel" button is pushed and the vehicle decelerates many mph, when the "resume" button is pushed the rpms climb way up but the vehicle won't accelerate. When at any speed not using cruise and the gas pedal's pushed down hard, the same thing happens: rpms climb but the vehicle doesn't accelerate. In hindsight, there've been a few times when we've been driving at normal town speeds and approached a stop sign and, when the vehicle has almost stopped, it "chugs" to a final stop (almost as if the transmission didn't disengage its gears correctly). Perhaps the two conditions are related?

Thinking that perhaps the lack of accelerating could be turbo-boost-related, I checked the intercooler hoses and didn't see any obvious splits/holes. The hoses are soft (though I've had the EHM mod done since 26,000 miles), so they'll be replaced when I do the timing belt job. The transmission fluid level is OK and the fluid's not burnt. I do have the MAP sensor disconnected at the airbox so the EGR valve is inoperable too.

Has anybody else experienced this problem? What was the cause and how did you remedy it? Any replies will be greatly appreciated!

Steve

DOC4444 · **Posted:** Mon Apr 07, 2014 2:52 pm

Do not know about cruise, but you can live without tbat. The stalling coming to a stop is most likely the TC failing to release the clutches. Search the site for this topic. There have been MANY posts on this.

DOC

papaindigo · **Posted:** Mon Apr 07, 2014 4:41 pm

" If at speed using cruise and the "cancel" button is pushed and the vehicle decelerates many mph, when the "resume" button is pushed the rpms climb way up but the vehicle won't accelerate. When at any speed not using cruise and the gas pedal's pushed down hard, the same thing happens: rpms climb but the vehicle doesn't accelerate. " - try turning cruse completely off next time either of these happen and see if acceleration is normal with the go pedal. Report back.

"there've been a few times when we've been driving at normal town speeds and approached a stop sign and, when the vehicle has almost stopped, it "chugs" to a final stop " - unless you have recently done a tranny service do a tranny service with ATF+4 fluid only and either OEM or WIX filters. Report back. If you have done a tranny service recently did you use correct fluid/filters, if not redo, if you did ignore tranny fluid level on dipstick and add 1qt ATF+4. Report back.

WWDiesel · **Posted:** Mon Apr 07, 2014 8:58 pm

Sounds to me like it is low in ATF, do like Pap says, add some ATF+4 to slightly above the hot full mark on the dipstick when the Jeep transmission fluid is at ambient temperature. ATF Dipstick inaccuracies are a known problem with our CRD's and Low ATF levels can cause all kind of weird problems. Been there done that with the come to a stop stall when cold, raising ATF level to above full mark cured it!

Let us know what you find or how it ends up so others can learn from it. :roll:

SJBrooks · **Joined:** Tue Mar 11, 2014 11:01 am **Posts:** 42

Thanks for the replies! I'll do as suggested and change the fluid/filter and add a little extra and report back. In the meantime, I had the following codes cleared: P0102/P1189/P1261/P0841. Would appreciate knowing what those are related to and if any of them could potentially contribute to the problem. As a reminder, I do have the MAP sensor disconnected at the airbox.

Thanks again all,

Steve

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

SJBrooks wrote:

Thanks for the replies! I'll do as suggested and change the fluid/filter and add a little extra and report back. In the meantime, I had the following codes cleared: P0102/P1189/P1261/P0841. Would appreciate knowing what those are related to and if any of them could potentially contribute to the problem. As a reminder, I do have the MAP sensor disconnected at the airbox.

Thanks again all,

Steve

Bumping this back to the top. Would greatly appreciate replies. Also, can anybody post a link to an '06 DTC list?

Thanks again,

Steve

papaindigo · **Posted:** Wed Apr 09, 2014 8:47 am

There is a "sticky" that lists them on the CRD tech site. Also go to Sir Sams NOOB guide and get a copy of the 06 FSM which has the codes and associated diagnostics (05 FSM does not as they were published in a separate volume)

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

Thanks Papaindigo! Appreciate the point in the right direction. I've sent you a PM as well.

Best regards,

Steve

papaindigo · **Posted:** Wed Apr 09, 2014 2:40 pm

I'm not sure the PM notice feature is working properly so if not FYI I sent a PM reply.

SJBrooks · **Joined:** Tue Mar 11, 2014 11:01 am **Posts:** 42

This is in reference to my previous post, above. As suggested, I looked at the DTC list on the "sticky" on the CRD Tech page, and only one DTC (P1261) was listed. The other three (P0102/P1189/P0841) are not listed. Is that "sticky" list up-to-date? Would greatly appreciate somebody sending me the meaning of the three DTCs and also suggesting a fix for all four.

Thanks,

Steve

GreenDieselEngineering · **Joined:** Sun Jun 07, 2009 5:10 pm **Posts:** 1111

P0102 is MAF unplugged fault (no voltage)
P1189 unplugged air pressure sensor on side of airbox
P0841 this is not on our KJ fault code list, but on the Chrysler master list it refers to "transmission fluid pressure sensor/switch ""A" Circuit range/performance."

Hope this is helpful, the drivability issue seems related to a problem with the transmission and low fluid pressure.

SJBrooks · **Joined:** Tue Mar 11, 2014 11:01 am **Posts:** 42

Thanks! Can anybody tell me where on/in the transmission the pressure switch we're talking about is located?

Steve

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

SJBrooks wrote:

Thanks! Can anybody tell me where on/in the transmission the pressure switch we're talking about is located?

Steve

Bump back to top. Can anybody tell me where this switch is located? I have not yet taken any of the suggested actions to see what the cause(es) of the problem might be, but will soon.

In addition to above:

Can anybody confirm that the F37 recall was applicable to only '05 CRDs? My '06 was built in Sept '05, and we bough it in Sept '06. Sometime between then and Jan '07, I received (IIRC) a notice from Jeep saying to bring it to the dealer for the F37 recall, which was accomplished in Jan '07. There's a sticker on the radiator/CAC header panel saying "F37 accomplished. Replaced torque converter and reprogrammed ECM & TCM". How likely is it this replaced converter is now bad? Is there anything associated with the F37 that could be causing my trans problem?

Thanks all,

Steve

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

bump back to top. I could really use anybody with knowledge to answer my questions.

Thanks,

Steve

ebbnflow · **Posted:** Thu May 01, 2014 11:52 am

The pressure sensor is on the drivers side of the tranny. Can't seem to post a pic today, but look up the 545rfe tranny and you should be able to find a pic of it.

F37 applied to all CRDs. Early made CRDs got a new TC (not the Euro TC) and a TCM flash. Later model CRDs just got the TCM flash.

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

ebbnflow,

Thanks for the reply! As regards the F37 recall, should my Jeep have not had its ECM reprogrammed along with the TCM? Further question: since I'm unsure what type of TC was installed with the F37, is there a way to tell what kind is installed without removing the transmission from the vehicle?

Thanks again,

Steve

ebbnflow · **Posted:** Fri May 02, 2014 12:58 am

I believe the ECM also got flashed to de tune the motor ( less HP and Torque), so the TC would last longer.

The TCM flash changed the shift points to avoid shudder at 50mph. It also keeps the TC unlocked more often to prevent shudder as well.

Chrysler engineering at its best.

SBrooks · **Joined:** Sun Sep 17, 2006 7:30 pm **Posts:** 85

Thanks for the replies. Is there a way to visually inspect the TC while still in the vehicle to tell what type it is (stock, European, etc)? If there is, what clues should I look for to tell the type?

Steve

ebbnflow · **Posted:** Fri May 02, 2014 12:51 pm

No. Unfortunately the only way to identify the TC is by looking at the label on the box it comes in.

DOC4444 · **Posted:** Sat May 03, 2014 8:40 am

To elaborate on the last post, as crazy as this sounds, the only way I know to identfy the EURO TC is from the part number on the cardboard box the TC comes in. However, step one is to get a GDE ECU tune of your choice. If you then experience shudder around 58 mph, then you need to decide which higher capacity TC you are going to get.

DOC

Transmission-related problem?

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