Engine Dies When Brake Pedal Pressed - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 01-27-2011, 08:55 AM
Premium Member

Join Date: Sep 2007
Posts: 191
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Angry Engine Dies When Brake Pedal Pressed

Ok - this one is getting me a little confused: Leaning towards CPS but want other things to check while I wait for a new CPS to come in. Plus it has some missing symptoms/odd peculiarities from the last time my CPS went out.

Truck dies when brake pedal is pressed - sometimes it stumbles then recovers when the brake pedal is pressed, but most often dies. Immediately restarts with no hesitation. Sometimes problem repeats itself, sometimes not.

I thought it might be when I go to put it into gear (worried about possible TC problems) but have been careful to observe and it only happens when I touch the brake - not when actually changing gears. Other thing is it will idle in park indefinitely - left it running in park for 2 hours the other day and it never had a single problem, hopped in and hit the brake and it died (reminds me of forgetting to put a key in the ignition after using the autostart to start the engine and hitting the brake)

Lastly, I have noticed that sometimes when it stumbles it recovers into what I call limp mode - most noticable is the absence of any display on my DP tuner when it does this recovery - solution is turn engine off and restart as this "limp" mode is barely enough to move the truck.

Now heres the really strange part - it seems to be worse when its cold out (-20° to -40°F) but does not have anything to do with the indicated engine temperature - ie the other day when I let it run for 2 hours the truck was at operating temperature before I ever hopped in (and it was only -20°F) However I can't recall it ever happening after parking it in a warm garage over night.

1. Fuel filter is just replaced about 1 month ago
2. Just replaced a broken fuel bowl heating element about 1 month ago (thought I was having wax plugging of filter because of the broken element)
3. Truck runs strong and does not stumble except when brake is depressed (ie I have NEVER had it stall out while coasting/driving/accelerating)
4. Had Ford recall for CPS done about 2 years ago and it solved a stalling problem I was having then too.
5. Autoenginuity is telling me no-codes set (SES light does not come on - but wait to start light does??)

Ideas? Anyone?

My ideas are as follows so far:
1. Bad CPS
2. Bad PCM
3. Bad connection of DP tuner to PCM
4. Tranny fluid level/TC problems
5. Frozen Gremlin who wants me to park in garage more often.
Reply With Quote Quick reply to this message
Sponsored Links
Old 01-27-2011, 09:28 AM
Compression Ignition Addict

Join Date: Jul 2007
Posts: 5,612
Thanks: 5
Thanked 13 Times in 13 Posts
Feedback Score: 0 reviews
gremlin gets my vote
Reply With Quote Quick reply to this message
Old 01-27-2011, 10:54 AM
Conservative and Proud


Join Date: Nov 2005
Location: Oregon
Posts: 14,472
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Reply With Quote Quick reply to this message
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:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


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 02:39 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.