Hard Cold Start - Suspicions Confirmed - Codes for Glow Plugs on my 2010 WH CRD - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand

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Old 17-08-2017
davet  davet is offline
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Default Hard Cold Start - Suspicions Confirmed - Codes for Glow Plugs on my 2010 WH CRD

Hi Team,

So, I bought a 2010 GC CRD two weeks ago. 70K on the clock. Has the classic cold starting problem that I've read so much about. Engine light doesn't stay on or anything. I scanned for codes with my OBD2 scanner and nothing came up (or so I thought). I used a different app and codes P0671, 0675, 0672 and 0676 (Cylinder "X" Glo Plug - Circuit Malfunction) were showing has having come up at some stage previously. Last digit is cylinder number.

My symptoms are cold start (i.e. block is cold) is difficult (takes 4-5 seconds at WORST of cranking to start). After that it starts normally until the engine cools down (overnight/long cool day). Car drives perfectly normal other than this. I'm in Perth so winter doesn't get that cold but does get into the single digits.

After reading a tip on another forum, I have had limited success with the turn the key back and forth 3 times to get the glow plug icon to come on 3 times in order to better heat the glow plugs. I don't know if this is technically accurate and this may be this is a coincidence but it does generally seem to help.

I've just purchased the glow plugs from ebay. I shall put them in when they arrive and keep you all posted.

http://www.ebay.com.au/itm/6-Bosch-D...IAAOSwEAtZZUWa

There's a fantastic youtube video of glowplug diagnosis here:

This blog here also has some information:
https://conflictedracer.wordpress.co...erokee-diesel/

Hoping this is of use to someone going forward. There's a lot of info out there, purpose of this post was to put it into one place.

One question I do have, I don't get any faults pertaining to the module. I plan on testing it as per youtube video above. I am wondering if it is worth replacing at the same time or perhaps leaving it and seeing how it goes. Doesn't look too hard to replace compared to some of the plugs.

So yes, anyway this has perhaps been done to death but figured putting some useful references in the one spot may help someone else down the track. I'll keep you guys posted, hoping the new plugs fix the problem!


**update 29/9/2017 - after a few cold starts and after checking the old plugs (4 of 6 failed the multi-meter test) I am comfortable the new glow plugs have fixed the problem.***
Cheers,
Dave
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Last edited by davet; 29-08-2017 at 08:39 PM. Reason: update on issue
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Old 17-08-2017
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Buy a blue driver scan tool, it will even tell you what number cyl glow plug is not working. And only approx $140 delivered. www.bluedriver.com
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Old 17-08-2017
H2Micr0  H2Micr0 is offline
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Well, you may find this interesting.

I purchased my 2007 CRD around 6 weeks ago, and it was showing cold start issues.

Long crank time then a white exhaust emissions.

I bought the BlueDriver scan tool, and got no codes, but decided that as the GC had 200k on it I should just replace the glow plugs anyway.

So I purchased the glow plugs and installed them and got no change whatsoever in the cold starting behavior.

And still no codes showing up in relation to the module or plugs.

Just thought my experiences with this might add to your existing info.

Cheers
Ben
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Old 17-08-2017
davet  davet is offline
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Thanks Ben. So did you manage to solve your issue? Others have reported fuel pressure losses due to leaks or faulty solenoids being the culprit of a hard cold start also. Have you explored this? Good luck mate. It's frustrating isn't it!
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Old 17-08-2017
H2Micr0  H2Micr0 is offline
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Quote:
Originally Posted by davet View Post
Thanks Ben. So did you manage to solve your issue? Others have reported fuel pressure losses due to leaks or faulty solenoids being the culprit of a hard cold start also. Have you explored this? Good luck mate. It's frustrating isn't it!
No, for now I am choosing to accept it as normal as there are no codes being flagged.

Forced peace of mind????

LOL

Cheers
Ben
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Old 17-08-2017
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Unless you have just done it I suggest fitting a new fuel filter.
MANN WK 842/23x
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Old 17-08-2017
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I had long cold starts too no codes or anything, so i changed all 6 glow plugs and the module at the same time and now i have to issues at all , starts heaps quick.
I brought my glow plugs from ebay Bosch Duratherm and the module make was Beru.
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