New glow plug problems - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 07-16-2019, 08:39 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jun 2017
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
New glow plug problems

Until this past June I had been putting off changing my glow plugs. I had 2 codes for glow plug circuit 5 and 8. Smog was due end of June so I decided to replace all 8 glow plugs. I also replaced the under valve cover gasket and wiring harness while I was in there. I used all Ford Motorcraft OEM parts not wanting to take any chances with aftermarket. Passed smog just fine. About 2 weeks and only a few hundred miles later, the service engine light comes on. I get a P0676 glow plug 6 circuit code. I clear the code thinking maybe just a glitch in the system since all glow plugs are new. Next day service engine light is back on, and this time I get glow plug circuit codes for cylinders 1, 3, 5, AND 6! The truck is starting fine, but it's pretty warm here right now. Anyone have any ideas what could be going on? HELP!
kaliona is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 07-18-2019, 01:56 PM
Compression Ignition Addict
 
greenskeeper's Avatar
 
Join Date: Mar 2013
Posts: 1,536
Thanks: 0
Thanked 82 Times in 81 Posts
Mentioned: 3 Post(s)
Quoted: 291 Post(s)
Feedback Score: 0 reviews
CALI truck with a glow plug controller?
greenskeeper is offline  
post #3 of 6 Old 07-18-2019, 07:44 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jun 2017
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
It is a California truck. Will a bad glow plug controller cause the codes I'm getting right after installing new plugs?
kaliona is offline  
Sponsored Links
Advertisement
 
post #4 of 6 Old 07-21-2019, 04:22 PM
Compression Ignition Addict
 
greenskeeper's Avatar
 
Join Date: Mar 2013
Posts: 1,536
Thanks: 0
Thanked 82 Times in 81 Posts
Mentioned: 3 Post(s)
Quoted: 291 Post(s)
Feedback Score: 0 reviews
Not familiar with the GPC trucks, Aside from pulling each glow plug and confirming good glow with 12v applied, I'd wait and see how it does once colder weather sets in. If it struggles to start then I would investigate further. I also believe in not spending money if I don't have to.
greenskeeper is offline  
post #5 of 6 Old 07-22-2019, 08:05 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jun 2017
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Pretty warm here right now. Mid 90s during day and upper 50s at night. So it won't hurt to keep running the truck with the P0671, P0673, P0675, and P0676 codes??? I just passed smog, so if its not hurting anything I can take my time trying to troubleshoot this problem.
kaliona is offline  
post #6 of 6 Old 07-24-2019, 11:40 PM
Compression Ignition Addict
 
Join Date: Apr 2012
Posts: 931
Thanks: 1
Thanked 4 Times in 4 Posts
Mentioned: 3 Post(s)
Quoted: 18 Post(s)
Feedback Score: 0 reviews
if it starts and runs fine it won't hurt anything.

I would ohm out the glow plugs from the main valve cover harness to start. I always check everything just in case; never know if you accidentally didn't get the connectors all the way on or something.
I can't recall if there is a way to test your gp controller like you can a gp relay.

It almost sound like there is a bad connection to those glow plugs or something. I had a buddy with a bad gp controller but he got a specific code for the bad controller; nothing about individual glow plugs.

Last edited by INFRNL; 07-24-2019 at 11:44 PM.
INFRNL is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome