Glow plug control module - PowerStrokeNation : Ford Powerstroke Diesel Forum


Home Today's Posts Mark Forums Read
Go Back   PowerStrokeNation : Ford Powerstroke Diesel Forum > Super Duty 1999-Current > 7.3L Power Stroke Technical Info
Register Members List Timeslips Calendar Auto Loans Sponsors Becoming a Sponsor Mark Forums Read Auto Escrow

PowerStrokeNation.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 03-02-2013, 03:14 PM
FSJPat's Avatar
FSJPat
Offline
PSN Local
Member's Gallery
 
Join Date: Mar 2011
Location: Chesapeake, VA
Posts: 76
Glow plug control module

I have been getting glow plug codes for 3 and 4 for awhile, so I replaced all the glow plugs (I used motorcraft plugs). I am getting codes for 3 and 4 again,. I pulled everything apart again and made sure that all the connections were tight (I'm also getting a lot of noise through the stereo since the replacement).

My truck is a California truck, so it has a module for the glow plugs instead of a relay. Could the codes and noise be a sign that the module is going bad?
__________________
2000 F250 7.3/ZF-6 SC/SB 2WD PHP tunes, MBRP 4" exhaust, 6637 intake, Hutch Mod, Frx, Hpx
Reply With Quote Go to the top
Sponsored Links
Advertisement
 
Sponsored Links
Advertisement
 
  #2  
Old 03-03-2013, 01:45 AM
Justin@DP-Tuner's Avatar
Justin@DP-Tuner
Offline
Sponsor
Member's Gallery
 
Join Date: Nov 2012
Location: Oakdale, CA
Posts: 1,177
Re: Glow plug control module

Have you checked/replaced the UVCH?
__________________
DP-Tuner
For Your Tuning Needs
www.dp-tuner.com
Like us on Facebook!
828-221-0076 ext.804
justin@dp-tuner.com
Reply With Quote Go to the top
  #3  
Old 03-03-2013, 05:23 AM
sho669's Avatar
sho669
Offline
Horsepower Enthusiast
Member's Gallery
 
Join Date: Dec 2011
Location: Humboldt/Sacramento county, CA
Posts: 370
Re: Glow plug control module

Yes the module can go bad, replace them pretty often.

I always measure the ohms of each glow plug by disconecting the harness above the valve cover and testing the pins (outer two on either side of the connector). Should see about an ohm of resistance, if you have one thats way off (higher) then thats your issue. This also rules out UVCH issues since the readings will be higher if the plug is backed out.

If you resistances are good then you have a bad module.
__________________
03 CCSB King Ranch 4X4 6.0, IDP Xstreet, Muffler delete. 13.90@94.627

00 CCSB, ZF6, 2WD. RIP 1-22-12

06 Mitsubishi Evolution IX SSL, LR 2.0, TS EFR9180, E85, 4 slicks and a chute...maybe some other stuff

69 Camaro, awaiting turbo LSX and chassis work
Reply With Quote Go to the top
  #4  
Old 03-03-2013, 07:38 PM
FSJPat's Avatar
FSJPat
Offline
PSN Local
Member's Gallery
 
Join Date: Mar 2011
Location: Chesapeake, VA
Posts: 76
Re: Glow plug control module

Quote:
Originally Posted by Justin@DP-Tuner View Post
Have you checked/replaced the UVCH?
I looked at it when I pulled the valve covers off, nothing seemed wrong with it. I will probably check that next after the module.

Quote:
Originally Posted by sho669 View Post
Yes the module can go bad, replace them pretty often.

I always measure the ohms of each glow plug by disconecting the harness above the valve cover and testing the pins (outer two on either side of the connector). Should see about an ohm of resistance, if you have one thats way off (higher) then thats your issue. This also rules out UVCH issues since the readings will be higher if the plug is backed out.

If you resistances are good then you have a bad module.
I'll give that a shot next. Thanks everyone for the help.
Reply With Quote Go to the top
  #5  
Old 03-31-2013, 12:26 PM
FSJPat's Avatar
FSJPat
Offline
PSN Local
Member's Gallery
 
Join Date: Mar 2011
Location: Chesapeake, VA
Posts: 76
Re: Glow plug control module

So I finally got a chance to check things out again. I tested the resistance of the pins in the connector on the valve cover, got 4 ohms for each of the glow plugs. Brand new plugs, don't think that is the problem. I think the 4 ohms is from my cheap meter and not being able to get a good connection on the pin. They were all consistent, though.

Tested the harness that plugs into the connector with the key on, got 11.9 volts at each one, so I think the GPCM is good.

I think at this point my UVCH is the problem, something is not making a good connection. Am I right in my thinking?

So my next step is ordering new UVCHs. Should I replace the valve cover gaskets along with the harnesses (they don't leak)?
Reply With Quote Go to the top
  #6  
Old 03-31-2013, 04:24 PM
jtgf250's Avatar
jtgf250
Offline
PSN Veteran
Member's Gallery
 
Join Date: Apr 2012
Location: Bumpass,Va
Posts: 1,529
Re: Glow plug control module

They are your gasket. Shouldnt leak. Make sure your grounds are good also if getting static on your radio. 4 ohms doesnt sound good to me and .5v loss is enough for them to not work. I havent messed with a cali truck so not sure about the module and how it hooks up.
__________________
2003 F-250 CCLB 7.3L
4" lift and PMF traction bar/block setup running 35s on 20x12s. Intake, exhaust, PHP Hydra w/ Gearhead tunes, gauges
2005 F-350 CCLB 6.0L
6" lift on 20x10s and 37s, studded, deleted, Powermax and Livewire with Quicktricks tunes, exhaust, intake (Wife's Truck)
Reply With Quote Go to the top
Reply


(View-All Members who have read this thread : 48
02f300, 444-4D, 96rclb, Big Bird, bigb, Biscayne, BlkNTan, BradleyStuart, bushhogger, C5dad, cleatus, co04cobra, cpdad93, curb guy, dieselmandustin, Dirtyboy82, firedude26, FSJPat, Garydmundy, ghohouston, hunter scar, hydro man, InmatesRunThePlace, jaybuller, johnrhodes, jopes, JSchuricht, jtgf250, Justin@DP-Tuner, KellyC, Lawn Jockey, leoneo01, miller45103, No Regrets, Northcountrywood, northid710, salprofish, sho669, sinnful_46534, slippydaman, tbirdscott, thecrazyhorse, theron1128, thetechie01, turborangerdude, Yotalac, z_racing14
Thread Tools
Display Modes


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:53 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.