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Search: Posts Made By: Clarkyau
Jeep Forums: WK Grand Cherokee & XK Commander Forum   01-08-2018, 03:21 PM
Replies: 32
Views: 4,653
Posted By Clarkyau
That's what happens when your PCM lives under the...

That's what happens when your PCM lives under the battery in a CRD. I've seen ones where the top case has been eaten through! I remove my battery and battery tray once a year and give it a good wash...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   01-08-2018, 02:41 PM
Replies: 14
Views: 1,729
Posted By Clarkyau
No programing just a straight swap. I have been...

No programing just a straight swap. I have been getting conflicting information about but from my experience a straight swap works with no problems.
Jeep Forums: WK Grand Cherokee & XK Commander Forum   12-17-2017, 04:08 AM
Replies: 21
Views: 3,816
Posted By Clarkyau
Just a shot in the dark but have you checked your...

Just a shot in the dark but have you checked your injector seals? Pull the cover that sits over the injectors and look for signs of blow by, this happens when the copper washers that seal the...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   12-16-2017, 11:27 PM
Replies: 14
Views: 1,729
Posted By Clarkyau
They are a piezo injector and there are...

They are a piezo injector and there are reconditioned ones but I was told not to get them by VP.
Jeep Forums: WK Grand Cherokee & XK Commander Forum   12-16-2017, 12:55 AM
Replies: 14
Views: 1,729
Posted By Clarkyau
Thought I'd update what I have done to resolve my...

Thought I'd update what I have done to resolve my issue(s):|
Transmission and torque converter changed, made a big difference in drivability and eliminated the "blip" where the RPM dipped. The...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   11-11-2017, 01:34 AM
Replies: 7
Views: 645
Posted By Clarkyau
I second 08rubie1's post, get a BERU module. ...

I second 08rubie1's post, get a BERU module.
https://www.idparts.com/glow-plug-control-unit-om642-5v-steel-p-6981.html
Jeep Forums: WK Grand Cherokee & XK Commander Forum   11-03-2017, 10:32 PM
Replies: 4
Views: 8,128
Posted By Clarkyau
I did it on my CRD with Autoenginuity. took a bit...

I did it on my CRD with Autoenginuity. took a bit of fiddling but I was able to lower the threshold to 10psi. If I remember correctly the setting was in the front control module.
Jeep Forums: WK Grand Cherokee & XK Commander Forum   11-03-2017, 10:20 PM
Replies: 7
Views: 2,869
Posted By Clarkyau
You won't really need to change ratio's with 3:55...

You won't really need to change ratio's with 3:55 but 3:73 are better.
I did change to 3:73 from 3:55 only because I tow and with 265/70/17's the shift points were out and temps ran hotter (my...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   11-03-2017, 10:06 PM
Replies: 7
Views: 5,523
Posted By Clarkyau
Here is what's involved with the oil cooler leak....

Here is what's involved with the oil cooler leak.
http://www.peachparts.com/shopforum/diesel-discussion/363973-journey-into-infamous-om642-oil-cooler-leak.html
Jeep Forums: WK Grand Cherokee & XK Commander Forum   10-18-2017, 10:55 PM
Replies: 25
Views: 5,319
Posted By Clarkyau
Have you changed the Glow plug control module? ...

Have you changed the Glow plug control module?

here is a vid on how to repair
https://www.youtube.com/watch?v=axvc-QUTQFY

Not sure if its been mentioned yet but when searching for parts use...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   10-18-2017, 10:36 PM
Replies: 8
Views: 2,208
Posted By Clarkyau
This should help ...

This should help
http://colorado4wheel.com/manuals/Jeep/WK/WK%20FSM/2005_2008_Grand_Cherokee.PDF

http://www.gmb.be/CJD_parts/CDI/Catalogs/97-09/06WH.pdf
Jeep Forums: WK Grand Cherokee & XK Commander Forum   08-23-2017, 01:37 AM
Replies: 20
Views: 1,500
Posted By Clarkyau
Neutral (N) Shift Procedure 1. Key ON, engine...

Neutral (N) Shift Procedure
1. Key ON, engine off.

2. Vehicle stopped, with foot on brake.

3. Place transmission in N (Neutral).

4. Hold down N (Neutral) pin switch (with a pen, etc.) for...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   08-17-2017, 04:29 AM
Replies: 20
Views: 1,500
Posted By Clarkyau
Page 290 of the manual ...

Page 290 of the manual
http://www.wkjeeps.com/Manuals/2005_WK_Jeep_Grand_Cherokee.pdf
RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.)
Towing 2WD Models
Recreational towing is allowed ONLY if the...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-31-2017, 08:09 PM
Replies: 3
Views: 253
Posted By Clarkyau
Engine type? Year model? Without more info I...

Engine type? Year model?
Without more info I will guess coil pack.
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-31-2017, 08:01 PM
Replies: 10
Views: 535
Posted By Clarkyau
What oil are you running? 5W-20 oil MUST be used...

What oil are you running? 5W-20 oil MUST be used for proper operation of MDS system. If MDS isn't working properly the transmission will hunt to find the right gear, sounds like this is what it is...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-30-2017, 04:32 AM
Replies: 23
Views: 1,227
Posted By Clarkyau
My number one plug is stuck similar to yours, I...

My number one plug is stuck similar to yours, I can undo it but it won't come out. I even went evil and while it was loose started the engine hoping the compression would force it out but it didn't...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-28-2017, 04:54 AM
Replies: 62
Views: 26,090
Posted By Clarkyau
https://www.jeepforum.com/forum/f67/crd-3830193/ ...

https://www.jeepforum.com/forum/f67/crd-3830193/
Try the above link.
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-08-2017, 08:31 AM
Replies: 8
  4.10
Views: 418
Posted By Clarkyau
You run a NAG1 transmission, the first thing you...

You run a NAG1 transmission, the first thing you need to do is find someone who can program your TCM to suit your new ratio. The 4.7 and Hemi are easy, not so with the 3.7 and CRD (same box).
Jeep Forums: WK Grand Cherokee & XK Commander Forum   07-03-2017, 12:46 AM
Replies: 28
Views: 1,083
Posted By Clarkyau
With the CRD you do get a code but no cell. Can't...

With the CRD you do get a code but no cell. Can't recall what it was but it indicates out of range or short circuit (which makes sense).
There is a few tuners around (diablosport is one) that allow...
Jeep Forums: WK Grand Cherokee & XK Commander Forum   06-27-2017, 10:27 PM
Replies: 38
Views: 1,430
Posted By Clarkyau
I have the CRD, it runs the same NAG1...

I have the CRD, it runs the same NAG1 transmission as your 3.7. I have towed 2.2T through the Australian outback (+100f days at around 65mph) without issue trans sat on about 205f. I have seen it at...
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