Start and Idle problem - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-05-2011, 02:51 PM
Compression Ignition Addict
 

Join Date: Jan 2011
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Start and Idle problem

p1) When I go to start my e99 7.3 it takes a few cranks (sometimes a few tries) to start, even if you let it glow long past the WTS light.

p2) When it does start, at idle it surges, as in it revs between 700-1500 rpm, and when it gets to 1500 rpm, it makes a whine, (which I can only relate to a PS pump when it is completely maxed out to one side at a low rpm) then goes back down to 700 and starts all over again. If you rev the motor up and then let off, it temporarily goes away and then comes back in a minute or so.

I have put some anti gel in the tank, and have a new fuel filter yet to install (when I get time). I'm thinking maybe a vaccum leak? possibly bad glow plugs/ relay/fuse? I haven't had a chance to plug it in and try heating it first to see if that helps with the starting, gonna try and do it tommorrow, as I am not currently driving the truck (not registered yet).

Would the WTS light still come on if the glow plug relay is bad?

I figure that people who know these motors better than me should have some ideas of what to look out for .


What are you guys thinking, I'm looking for directions to head in. Any help is appreciated.

Last edited by venturesomerite; 01-05-2011 at 03:08 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 01-06-2011, 06:13 AM
Compression Ignition Addict
 

Join Date: Mar 2010
Location: mokena IL
Posts: 315
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
here you go
Troubleshooting GPR & GP's

also thinner oil will help if you don't plug it in
Reply With Quote Quick reply to this message
  #3  
Old 01-06-2011, 06:14 PM
Compression Ignition Addict
 

Join Date: Jan 2011
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thank you, I'll have to whip out the meter and take a look. What do you guys think about the surging?
Reply With Quote Quick reply to this message
  #4  
Old 01-07-2011, 08:07 AM
Compression Ignition Addict
 

Join Date: Mar 2010
Location: mokena IL
Posts: 315
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
how many times does it surge
mine does it if is really cold and it is not plugged in
a video of yours will help

here is what mine sounds
Reply With Quote Quick reply to this message
  #5  
Old 01-07-2011, 08:16 AM
Compression Ignition Addict
 

Join Date: Jan 2011
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I'm not sure exactly how long it will do it, has done it for 10 min before I drove it, but I can faintly hear the PS sounding while wile driving. Seems to be better when It is cold. I will try and get a video of it.

It is definately not the initial start up surge as seen in the video.
Reply With Quote Quick reply to this message
  #6  
Old 01-07-2011, 08:27 AM
Compression Ignition Addict
 

Join Date: Mar 2010
Location: mokena IL
Posts: 315
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
A video will be better then trying to explain
Reply With Quote Quick reply to this message
  #7  
Old 01-07-2011, 08:09 PM
Compression Ignition Addict
 

Join Date: Jan 2011
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well went to take a video and it wouldn't do it. I'll try again tom.

Also, when I does whine, It sounds like a jake brake coming back through the air filter housing. You can also hear it while driving around town, and feel a loss of power when it happens.
Reply With Quote Quick reply to this message
  #8  
Old 01-07-2011, 08:18 PM
IBEW Journeyman Lineman
 

Join Date: Jun 2009
Location: Union, MO/ Pomona, CA
Posts: 772
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 2 reviews
The Exhaust Back Pressure Valve is probably operating. It will close in an attempt to help warm the truck up faster. They don't always operate properly and will randomly close while driving all sorts of other inconvenient times. My 99 was giving me those problems so I deleted it all together and no longer have those problems. When its parked and the idle goes up does it sound like a jet engine at the exhaust tip? Plugging it in should definitely help your hard start ups. The Wait to Start light will still come on as normal even if the GPR is bad.
Reply With Quote Quick reply to this message
  #9  
Old 01-07-2011, 08:27 PM
Compression Ignition Addict
 

Join Date: Jan 2011
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I was thinking that once I started hearing the jake brake noise. Any good threads on plugging/bypassing/repairing it?

Is it something one just removes and is done, or do block off plates need to be fabbed? Would the truck still pass emissions?

Last edited by venturesomerite; 01-07-2011 at 08:41 PM.
Reply With Quote Quick reply to this message
  #10  
Old 01-08-2011, 03:27 AM
Compression Ignition Addict
 

Join Date: Mar 2010
Location: mokena IL
Posts: 315
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
You can just unplug it if it is not leaking any oil
I took mine out
Reply With Quote Quick reply to this message
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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
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 01:17 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors