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GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
It is a known issue that the ceramic glow plugs have longevity issues in the KJ CRD. The plugs used in these vehicles were 1st generation and are prone to failure from overheating and other internal design issues. There are several different ECU releases during the two model years and if your vehicle is not running a fairly new release then the glow plugs could be more as risk of failure. To date our tunes have focused on fuel economy, drive ability and performance. We are now starting to review the glow calibration and will be including the most up to date release in all our tunes regardless of the ECU firmware level.

We have successfully translated the glow logic from the latest firmware to the older version and tested it on a 2005 vehicle. The next step is to do the same with a 2006 vehicle and then perform daily validation with the cooler temps to verify the functionality. The goal is to have new tunes available by 21 October.

Additionally, we are planning to lengthen the time the glow lamp is illuminated on the dash. We are only planning to add about 0.5 seconds to the light. This will help remind customers to delay cranking the engine in cold conditions to give the glow plugs adequate time to warm-up.
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Lancer

Joined: 15/07/2009 02:30:43
Messages: 18
Location: London, England
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You must get tired of hearing this, but thank you for all that you are doing for the CRD

Light Khaki 2005 CRD Sport. TJM type 17 bumper, extended breathers, Grabber AT2s
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
We have successfully translated the glow calibration from the latest release and installed it on all the tunes we offer. With this, no matter what ECU part number one has, with the tune the glow plugs will be operating at the safest temperature (as best as it can be). This will help to ease worrys about glow plugs for customers with older vehicles looking for an update.
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flman
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Joined: 28/08/2009 19:59:32
Messages: 74
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Cool, I will be sending my ECUs in next week. You offer us great support

Still Burnin Oil since 1992!
2010 John Deere 2305 3 cylinder Yanmar
GDE HOT!! Tuned 2006 CRD LTD Silver, Euro TC, GDE Tuned TCM, B&M Trans drain kit
GDE ECO Tuned 2006 CRD Sport Black, B&M Trans drain kit, Front and rear hooks, Full Skids
GDE ECO Tuned 2005 MB 2500 Sprinter Van
2010 MB 2500 Sprinter Van
flman
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Joined: 28/08/2009 19:59:32
Messages: 74
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Will this bring our ECUs to the latest Chrysler Flash level, or does it just correct the glow plug failure issue?

Still Burnin Oil since 1992!
2010 John Deere 2305 3 cylinder Yanmar
GDE HOT!! Tuned 2006 CRD LTD Silver, Euro TC, GDE Tuned TCM, B&M Trans drain kit
GDE ECO Tuned 2006 CRD Sport Black, B&M Trans drain kit, Front and rear hooks, Full Skids
GDE ECO Tuned 2005 MB 2500 Sprinter Van
2010 MB 2500 Sprinter Van
LOSTCRD

Joined: 18/07/2009 22:51:54
Messages: 26
Location: San Antonio, Texas
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Are there any issues with unplugging the Bosch Plug and running with the Glow Plugs disabled? I know there would be a CEL but would this ultimately be the safest in the long run...since it might be hard to get "engines" in the future. If it is a possiblility, could you flash the ECU so that it does not throw the CEL?


2006 Jeep Liberty CRD...OME Lift...ASFIR Aluminum Skids and Steps...

DarbyWalters @ L.O.S.T.
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GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
There are no issues if one unplugs the glow plugs, other than the constant CEL. We could turn off the glow plug CEL if customers really wanted it. Down in Texas where you are at, the glow plugs are not used that often and most likely they will not be fully powered in order to acheive the regulating temperature. The northern portion of the US and Canada tend to put the glow plugs through more exercise and would have a higher percentage of failures. Having the latest calibration of the glow plugs is the most important factor as it works to reduce the maximum plug temperature and increase life.

If you had a cold snap in Texas and the ambient dropped down to 15-25 F overnight, the CRD would be very hard pressed to start without the glow plugs operational, unless the block heater was plugged in all night. After starting, the engine may have some misfire for the first 2-3 minutes without glow plugs working. You may want to test this on your vehicle a few cold mornings to see the effects in your region.

It would be interesting to know how many owners have actually had a glow plug issue and what region of the US they are located.
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Ripster
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Joined: 19/07/2009 08:05:49
Messages: 15
Location: UP of Michigan
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Here is my experience from the glow plug cel of 1261 posted on Lost also.

Well I can vouch for Brickman Dodge Jeep of Antigo Wisconsin, pretty good diesel mechanic that
works on the cummings trucks there. The dealership has sold a few CRD's but he works on them
occasionally, but the reason the number 1 glowplug replacement and module by another dealership
did not work, and the code 1261 continued to show up was..................................................previously
posted here also, the wiring harness was reversed from factory, so that when #1 showed up, it was
actually #4. Of course had I taken it there first, they probably would have tested #1 and found it
to be good, and then they would have dug deeper to try to figure out the real issue. So I have
two new glow plugs a new harness and module--only two more to go now. Light has stayed out.
So even though I have seen others on this report the wiring harness is backwards, I thought surely
it does not happen that much, seems it can happen often. Testing the resistance of the glowplug is
a must as part of troubleshooting this issue.

2005 Silver Limited CRD
GDE Eco Tune
PML Differential Cover/Crankcase Mod
Tal & Hadas Grill Guard/TransGo Shift Kit
V-6 AirBox/Lunar Boost & EGT
Lund Cold Weather Grill Insert
Cat 2 Filter, Cummins Lift Pump
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retired


I plan on getting the tune some time next week and i was wondering if it will come with the new glow calibration.
thanks in advance
retired


any new tune comes with the most current glow plug settings...this is a newer feature...that is what has been indicated by GDE
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
This is true, regardless of the firmware in the ECU. Both our tunes will have the latest glow plug calibration installed. This at least makes sure your vehicle is up to date in terms of glow plug service releases. We updated all our cals on 20 October.
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ac5501

Joined: 17/07/2009 12:56:11
Messages: 4
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Ripster wrote:Here is my experience from the glow plug cel of 1261 posted on Lost also.

Well I can vouch for Brickman Dodge Jeep of Antigo Wisconsin, pretty good diesel mechanic that
works on the cummings trucks there. The dealership has sold a few CRD's but he works on them
occasionally, but the reason the number 1 glowplug replacement and module by another dealership
did not work, and the code 1261 continued to show up was..................................................previously
posted here also, the wiring harness was reversed from factory, so that when #1 showed up, it was
actually #4. Of course had I taken it there first, they probably would have tested #1 and found it
to be good, and then they would have dug deeper to try to figure out the real issue. So I have
two new glow plugs a new harness and module--only two more to go now. Light has stayed out.
So even though I have seen others on this report the wiring harness is backwards, I thought surely
it does not happen that much, seems it can happen often. Testing the resistance of the glowplug is
a must as part of troubleshooting this issue.


Very similar situation for me.

CEL came on said #1 glow plug was bad......

Took Jeep to dealer. They checked and said the #1 Plug was ok and the problem was elsewhere. I would have to leave the Jeep and they would have to spend what could be several hours tracking down the issue. They said the glow plug was covered under warranty, but if the problem was something other than the GP, I would have to pay out of pocket for the replacement and the time spent diagnosing. I said could not risk a very large diagnostic build and went home.....

Took jeep to B in Law (Mechanic). After poking around we (and by we I mean him) discovered that the #4 GP was the bad one, and that the harness was installed backwards......

GP being a warranty issue, I went back to the dealer, pointed out exactly what was wrong, they confirmed it and fixed it at no charge. They even waved the 100.00 power train deductable because I had to diagnose it myself.

Overall, I was happy with the way it was handled, and have had not GP issues since
Rixram

Joined: 08/03/2010 13:05:57
Messages: 2
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Is there a guide anywhere that would cover the correct placement of wiring and tip & tricks to avoiding KJ CRD failures?
 
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