Hard cold starts...GPR? Or whats the proper way to heat GP's in cold? - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 3 Old 02-03-2011, 11:08 AM Thread Starter
Powerstroke.org Rookie
Join Date: Jan 2011
Location: Shawnee,KS
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Hard cold starts...GPR? Or whats the proper way to heat GP's in cold?

I just bought this 7.3 F-250 a week or so ago and i think I know why the guy had it for sale

Anytime its about 25 or colder out the truck is a BEAR to get started (not plugged in) but it does start takes a few minutes. With very minimal diesel knowledge when I was looking at the truck it was plugged in ~20 degrees outside and it fired right up. I talked to the shop that always maintained the truck and he said glow plugs were put in about 3 years ago. I thought this thing would start a little better on it's own with newer glow plugs. Is it possible the GPR is going south? Also what is the "proper" way to heat up the glow plugs in the winter? Do you just keep the ignition on several minutes after the wait to start light goes out or do they quit heating up after the light goes out and you have to cycle the key?

2002 pontiac trans am- 1100rwhp 88mm LS1
AutomagicLS1 is offline  
Sponsored Links
post #2 of 3 Old 02-03-2011, 11:17 AM
Powerstroke Techie

Clay Henry's Avatar
Join Date: Jul 2006
Location: Tuttle, OK
Posts: 17,264
Thanks: 1
Thanked 23 Times in 21 Posts
Mentioned: 1 Post(s)
Quoted: 31 Post(s)
Feedback Score: 0 reviews
The GPR could be going out yes. Someone with more expertise in that will have to help you.
You should always allow the GPs to heat a min. of 30-45 seconds (longer in some cases) in that kind of cold. Give that a try and see if your situation improves.

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Clay Henry is offline  
post #3 of 3 Old 02-03-2011, 12:02 PM
Compression Ignition Addict
Join Date: Dec 2007
Posts: 6,737
Thanks: 7
Thanked 320 Times in 309 Posts
Mentioned: 9 Post(s)
Quoted: 184 Post(s)
Feedback Score: 3 reviews
The GPs remain on for almost 2mins (when very cold) after the WTS goes out.

If you can, I'd be plugging it in when ever it's going to be real cold. Mine's on a Radio Shack Digital timer set to come on at 4 so it's ready by 7. The truck will start So Much easier and that's SO MUCH EASIER on your truck! Your Batteries, Starter, and engine will thank you.....

Here's All you need to know to diagnose and repair cold starting woes

Winter Operation, Hard Starting, Hissing Sound Etc...

Troubleshooting GPR & GP's
NoRalPh is offline  
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:


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
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