Correct glow plug module

kjjet · **Posted:** Fri Feb 14, 2014 10:23 pm

Can someone let me know if I'm correct in saying:
The original and steel 7V Glow plugs use module P/N 56044671AA.
The 5v steel Glow plug Module is P/N 56044671AC?
I don't believe the modules are interchangeable between 7 and 5 volt plugs?

Is this correct?

I wanted to replace my module, but the original AA is not available.

Thanks
KJJET

Yeti · **Posted:** Sat Feb 15, 2014 5:36 am

i have the AC

with the 7v

and i have found on internet the AA , i have bought it

and when arrive , i have see the code delected with a black stripe , under this i have see AC :evil:

Squeeto · **Posted:** Sat Feb 15, 2014 12:38 pm

See:
viewtopic.php?f=5&t=63799

I am still not sure if they are the same part though.

kjjet · **Posted:** Sat Feb 15, 2014 2:59 pm

Squeeto wrote:

See:
viewtopic.php?f=5&t=63799

I am still not sure if they are the same part though.

After reading a bit. I think they are the same, just the AC # replaced the AA # I think?
Jeep says they are the same.

Thanks
KJJET

weeks101 · **Joined:** Mon Jul 30, 2012 3:29 pm **Posts:** 747

Here is the glow plug info I have compiled after doing my own digging a while ago:

Factory was 7v ceramic.
Later Chrysler released an updated 5v steel plug (and kit) which required an ECM reflash and included a new glow plug module.
Then Etecno released a 7v steel plug as a direct replacement for the OEM 7v ceramics, not needing a new glow plug module or reflash.
Now it seems within the last 6 months Etecno has released a new design of GX3123. It’s advertised as a 7v steel plug (same as it was before) but is designed to be a suitable replacement for both the factory 7v steel and the factory 5v steel without any changes to existing glow plug modules or ECM flashes. Source: viewtopic.php?p=817721#p817721

Some other helpful info:

To determine what glow plugs you have, it’s not enough to check the part number on your glow plug module. Visually inspect the glow plug behind the alternator bracket with a flashlight.

If plug has a white ring = 7v
If plug has s a red ring = 5v

Glow plug modules:

56044671AA: factory glow plug module for 7v ceramic
56044671AC: updated glow plug module - included as part of 5v conversion, and according to this post it also works for 7v ceramics.

Sources:

http://colorado4wheel.com/manuals/Jeep/ ... _FICHE.pdf (pages 115 and 159)
viewtopic.php?p=603314#p603314
viewtopic.php?p=817721#p817721
viewtopic.php?p=817776#p817776
http://idparts.com/catalog/product_info ... ts_id=3816
http://www.idparts.com/catalog/product_ ... ts_id=2749
http://www.dieselglowplug.com/gx3123-di ... -2032.html
http://www.etecno1.it/diesel-glow-plug- ... -1562.html

kjjet · **Posted:** Sat Feb 15, 2014 8:52 pm

We know all the history. Bin there, done that.

Just trying to get a grip on GP Module. AA VS AC that's it.

Thanks
KJJET

flman · **Posted:** Sun Feb 16, 2014 8:41 am

Per this, part number AA AC is the same. Supposed to be used with ceramic glow plugs.

http://www.factorychryslerparts.com/pro ... 671AC.html

MRausch82 · **Posted:** Mon Feb 17, 2014 10:55 pm

They seem to be the same Bosch relays with an updated Chrysler p/n for some reason. Unsure if they were made "more durable..." I doubt it. The glow plug relays do fail, but I think from age and repeated loads. Bosch usually makes a good product. :2cents:

Mountainman · **Posted:** Wed Apr 02, 2014 8:55 pm

Thanks for the awesome list of GP info Weeks! I only have one last question for this list. Do the new 7v plugs help significantly in cold temps? I've only seen my 5s down to freezing, and I had no problems.

:JEEPIN:

weeks101 · **Joined:** Mon Jul 30, 2012 3:29 pm **Posts:** 747

It seems the "best to worst" is:

1 - 7V Ceramic
2 - 5V Steel
3 - 7V Steel

Mountainman · **Posted:** Fri Apr 04, 2014 7:51 pm

Ok, thanks again, but that's weird that an element with almost 30% more V doesn't get hotter or work better. I wonder why? I also wonder what GPs most people in the north are using.

thermorex · **Posted:** Sat Apr 05, 2014 12:09 am

Thing is that I if you can plug the jeep block heater when is below 10 degrees, it doesn't matter what glow plugs you use. Ceramics seem to be the king in extreme cold weather. But 5-8 hours in extreme cold shouldn't prevent the engine from starting even with steel plugs, as long as the diesel doesn't gel.

Mountainman · **Posted:** Sat Apr 05, 2014 9:55 am

ok, thanks for saving me $100+ to change out to the 7's fellas! I'll just run them until they give me problems I guess. Going to suck if I get back to the truck after 3 days packed-in with a pack full of elk meat and it won't start though. I guess I'll bring a gen for the block heater, and wire up another battery.

Correct glow plug module

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