Glow Plug Relay?? - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 01-03-2013, 05:29 PM

Join Date: Dec 2012
Location: Ft. Lewis
Posts: 88
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Glow Plug Relay??

Tested my GPR today, I have the same volts out of my battery as I do on the constant on the GPR. When I turn the key, I get the same volts to the other big lug and only one of the small lugs. Now correct me if I'm wrong, but when you turn the key, it transfers power to the other big lug which then powers the two smaller lugs that send power to the GP. If this is the case, only one of my banks is getting power and that is probably the reason for a bunch of white smoke at start up and also a hard start/cold start at 21* this morning. I am waiting for my new GPR to arrive and I will be switching out GP, GPR, and injector Orings. Am I on the right track here? Thanks for your inputs. Being a first time diesel owner, I am learning most of my mechanics on diesels here and youtube.
Reply With Quote Quick reply to this message
Sponsored Links
Old 01-03-2013, 07:51 PM
Compression Ignition Addict

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 2,039
Thanks: 0
Thanked 59 Times in 59 Posts
Feedback Score: 0 reviews
Small terminals are for the coil part of the relay. The coil is energized when the PCM grounds one of the small terminals. When the coil is energized, the magnetic field produced moves the large contacts together which lets the big current from one large post go through to the glowplugs (connected to the other large post). Measure the voltage drop by placing the meter leads on the two large terminals when the relay is active. A reading of more than 0.3V and the relay is bad. Cheers!
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

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

All times are GMT -8. The time now is 07:29 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.