Ignition powerloss issue - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 3 Old 11-03-2010, 09:14 AM Thread Starter
Compression Ignition Addict
 
Join Date: Jan 2010
Posts: 216
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Ignition powerloss issue

96 7.3 with added electric fuel pump. So, when I go to start the truck, every now and then I get a huge power loss while waiting for the glow plugs, such a loss that the truck won't start. Yesterday, while it was acting up, I tried to diagnose it. What finally worked was disconnecting the glow plug relay, when I did this I had minimal power loss,( just the normal from glow plugs and electric fuel pump), the truck started right up and the battery went immediately back to the 14v range, oh yea, that's the other thing, when it is acting up (glow plug relay connected) if it does start, the battery takes a while to get back to 14v. I assumed it must be a bad relay and replaced it but no dice. Any suggestions?
Also, my braking is suddenly much softer, unrelated to the above, but still a problem I'd like to fix.
David
davidschaffer is offline  
post #2 of 3 Old 11-03-2010, 09:57 AM
Compression Ignition Addict
 
Chop's Avatar
 
Join Date: Feb 2010
Location: Glen Allen Va
Posts: 583
Thanks: 4
Thanked 9 Times in 9 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
The glow plug relay can stay energized up to two minutes depending on the ambient[outside] temperture,this is why amp gauge draws down and this is normal and expected from a well mantained PSD.From what I understand the oil temp dictates the duration of glow plug cycle. Cold weather and weak batteries are not friendly to the PSD,Having said that,is it cold?are the plugs working?

1996 F250 PSD Crewcab,auto,D 60 swap,3" dp, DIY air 4X4 Centurion
Chop is offline  
post #3 of 3 Old 11-03-2010, 11:22 AM Thread Starter
Compression Ignition Addict
 
Join Date: Jan 2010
Posts: 216
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Temp dosn't seem to make a differance, what I don't understand is why it only sometimes draws so much power that the truck won' t start, i can start it a 20 degs. sometimes no problem, run it for the day, try starting it again even if its 70 out and may be it will start maybe not. sometimes sucks the batteries dead, sometimes doesn't. with the gpr disconnected, never have a problem.
davidschaffer is offline  
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









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