Is this weird...or normal? - 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 12-19-2012, 04:51 PM
Premium Member
 

Join Date: Oct 2012
Location: Scappoose, OR
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Is this weird...or normal?

Hello,
I have a 1997 4x4 CrewCab, auto trans, 270K miles....had it for about two months.

This last weekend I noteiced something I had not before while going down a long grade....5-6 miles, coasting most of the way. It was icy conditions and 22 degrees. When I would reapply the throttle, there would be this kind of resistence, felt sort of like a compression brake that would slow the truck down until I pushed far enough on the throttle to begin to rev the engine again. I sensed it was happening when the torque converter was trying to re-engage. I do not know the history of the truck....is that behavior normal, is it possible the way an aftermarket torque converter works....or is mine about to blow? Btw....otherwise it seems to shift perfectly.

Thanks in advance,

Shannon Flanagan
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-20-2012, 05:06 PM
Compression Ignition Addict
 

Join Date: Dec 2008
Location: Gilbert PA
Posts: 2,070
Thanks: 4
Thanked 22 Times in 21 Posts
Feedback Score: 0 reviews
Could of been the Exhaust Back pressure Valve was closes. And until you build enough boost it will stay closed. I kinda acts like and exhaust brake when it is closed
Reply With Quote Quick reply to this message
  #3  
Old 12-21-2012, 11:55 AM
Premium Member
 

Join Date: Oct 2012
Location: Scappoose, OR
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks

Thanks Brad for responding. Does that mean the "exhuast back pressure valve" is malfunctioning, or that some other issue is at play...like a turbo that doesn't boost enough?

Shannon
Reply With Quote Quick reply to this message
  #4  
Old 12-21-2012, 03:01 PM
Serving Our Country!
 

Join Date: Aug 2007
Location: Manor, TX
Posts: 2,890
Thanks: 0
Thanked 18 Times in 17 Posts
Feedback Score: 2 reviews
There's a bunch of unknown's there. 22 is cold enough for the valve to close but it should be open if your up to temperature. In the factory configuration it only closes to help with warmup. Is your thermostat working and do you have any aftermarket programming? Also look under the hood to see if there is any extra wires running to the valve, many people like to put it on a switch to use it as a exhaust brake.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Tags
exhuast brake, torque converter, torque converter shudder, tranny problems

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 02:52 PM.


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