How Many Glow Plug Relays??? - 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 11-25-2011, 04:55 PM

Join Date: Nov 2010
Posts: 54
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
How Many Glow Plug Relays???

I've got a 2002 7.3 and I know I have a glow plug relay that has gone bad. However, there are two relays that look identical almost side by side. I know one is for glow plugs but what is the other one for? Is it a separate system or or there glow plug relays for each side of the block???
Reply With Quote Quick reply to this message
Sponsored Links
Old 11-25-2011, 05:17 PM
Compression Ignition Addict

Join Date: Mar 2010
Location: Westmoreland,Tn
Posts: 2,004
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
The other one is for your AIH (Air Inlet Heater) that is mounted in your intake spyder. Think of a heater element that glows red hot to help warm the air coming in the motor on cold start ups.
Reply With Quote Quick reply to this message
Old 11-26-2011, 06:17 AM
Compression Ignition Addict

Join Date: Dec 2007
Posts: 5,635
Thanks: 5
Thanked 164 Times in 155 Posts
Feedback Score: 3 reviews
It's the shorter one in the back.

Also, the AIH has nothing to do with starting in the cold. In fact, your engine has to be running for a min or two for it to even activate (which it does RARELY anyway).
Attached Thumbnails
How Many Glow Plug Relays???-gp-aihrelays.jpg  
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 08:27 PM.

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.