low boost pressure or component failure.... - 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 07-04-2012, 11:30 AM
Powerstroke.org Rookie
 

Join Date: Jul 2012
Location: Bixby
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
low boost pressure or component failure....

'00 F250 2wd, 150k miles, starts fine, will run all day, never dies. Per my Edge Evolution gauge, max boost is 3-4 psi. I had quite a time towing a 33' 5th wheel from Anaheim to Tulsa, barely able to run 65 mph on the flats. I had no idea about the boost issue because I had the gauge monitoring trans temp, eng oil temp, ex gas temp & voltage. On the trip out, unloaded, I could cruise at 80-85 and get 20 mpg, plenty of power for that anyway, didn't suspect anything. Since temps didn't look too bad (stock coolant "gauge" in dash never even hit 1/2 way up), figured I had tackled too much trailer for a mostly stock set-up ( 4" full system MagnaFlow & K&N FIPK to go w/ the Edge Evo set to "tow").

Enuff back story.... after switching gauge display around, never hits more than 4 psi boost, ever. Pulled DTC codes: P0470, P0603, P1247. All sources concur that 1247 is low boost, only found 1 desc. for 0470- exhaust pressure sensor circuit malfunction. Does that mean a MAP sensor or something like it? Does it sound like I really am only boosting 4 psi, or a component failure giving a false indication that throws everything else off?

As stated before, can drive it all day, never dies, or runs rough........ but it makes some strange noises when the trailer is hitched up and foot is to the floor at 55 mph with the A/C on, gets a surge going like flipping a switch on and off.

Any help is appreciated.

Chris
Bixby, OK
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-05-2012, 10:09 PM
Powerstroke.org Rookie
 

Join Date: Jul 2012
Location: Bixby
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
After more research on this site & others, I checked the rubber hose from the intake manifold (the "y" ?) to the boost sensor or MAP sensor by the A/C core. It had been previously "repaired" with a piece of a Bic pen, laying open inside some black plastic wire wrap. Replaced & now getting 11 psi boost max ....... much better, but is that all? Cleared codes before test drive, now just getting P0603.
Reply With Quote Quick reply to this message
  #3  
Old 07-13-2012, 04:26 PM
Powerstroke.org Rookie
 

Join Date: Jul 2012
Location: Bixby
Posts: 21
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
.............bump
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:
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 12:38 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