limp mode - Ford Truck Enthusiasts Forums



6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

limp mode

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 04-19-2007, 04:18 PM
shocky111 shocky111 is offline
Senior User
Thread Starter
 
Join Date: Mar 2004
Location: IN
Posts: 105
shocky111 is starting off with a positive reputation.
limp mode

What puts the tranny in limp mode? What happens while in limp mode? Is damage being done? 2004 6.0, torque shift tranny.

Thanks
Shocky
Reply With Quote
  #2  
Old 04-19-2007, 08:45 PM
Joms Joms is offline
Senior User
 
Join Date: Aug 2006
Posts: 157
Joms is starting off with a positive reputation.
Never heard of 'limp' mode before...
Reply With Quote
  #3  
Old 04-19-2007, 10:08 PM
shocky111 shocky111 is offline
Senior User
Thread Starter
 
Join Date: Mar 2004
Location: IN
Posts: 105
shocky111 is starting off with a positive reputation.
well stay tuned then...we're both about to learn a thing or two...I hope.

FYI...torque converter wont allow tranny to shift because of an over torque situation. Common with tuners.
Reply With Quote
  #4  
Old 04-20-2007, 08:09 AM
Casey Casey is offline
Posting Guru
 
Join Date: Jul 2003
Posts: 2,210
Casey is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by shocky111
FYI...torque converter wont allow tranny to shift because of an over torque situation. Common with tuners.
FYI the torque converter has no control over the trans. When the PCM tells the trans to shift, the torque converter can't prevent the shift.

Limp home mode is when the PCM detects a severe transmission problem. The PCM limits the transmission operation to try and prevent damage. A lot of people say that limp home is only a certain gear, but that isn't correct. The PCM decides what the trans can still do with the failure that it has, and uses what is still useable.

An example of limp home would be if the PCM detected that the pressure control solenoid that operates the overdrive clutch didn't work. In that case 2nd and 5th gears wouldn't work, so the trans will shift 1-3-4, since that's all that it can do.
Reply With Quote
  #5  
Old 04-20-2007, 08:49 AM
Enomra's Avatar
Enomra Enomra is offline
Elder User
 
Join Date: Mar 2004
Location: Oregon
Posts: 851
Enomra has a good reputation on FTE.Enomra has a good reputation on FTE.
I've never heard of a Torque shift going into or having a limp mode. The Allison trany (witnessed a 2002 DMax in limp mode) has a limp mode and it will go into limp mode with a tuner and a moderate to heavy load. It is controlled by the TCM and not the torque converter... Then again I could be wrong. I'm sure some one will correct me if I am.
Reply With Quote
  #6  
Old 04-20-2007, 10:12 AM
Beachbumcook's Avatar
Beachbumcook Beachbumcook is offline
Got Diesel?
 
Join Date: Jan 2004
Posts: 4,334
Beachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to all
The motor will go into limp-mode when certain operating parameters are met (not sure how the tranny is affected). For example, with cooling issues, it will not allow the motor over a certain RPM.

Hopefully, one of the techs will chime in, but I bet a search of "limp mode" will turn up something here or on the net. I know the motor has it, just do not know the specifics.
Reply With Quote
  #7  
Old 04-20-2007, 10:16 AM
EZ-Ford's Avatar
EZ-Ford EZ-Ford is offline
Senior User
 
Join Date: Sep 2006
Location: Santee, CA
Posts: 253
EZ-Ford is starting off with a positive reputation.
Just wish they had come up with a different name. 'Limp Mode' is not a very manly name for something on a diesel....
Reply With Quote
  #8  
Old 04-24-2007, 11:44 AM
cwacaster cwacaster is offline
New User
 
Join Date: Oct 2005
Posts: 3
cwacaster is starting off with a positive reputation.
My 05 F-250 went into limp mode while driving once. While in limp mode it ran like it was governed at 50mph. The service department at the dealership said it was because the EGR valve was stuck. They replaced the EGR under warranty and I haven't had any more problems.
Reply With Quote
  #9  
Old 04-24-2007, 02:13 PM
msgtg's Avatar
msgtg msgtg is offline
Post Fiend
 
Join Date: Feb 2007
Location: Rural WV
Posts: 5,040
msgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to behold
BBC, do you know what year models have this feature?
Reply With Quote
  #10  
Old 04-24-2007, 02:20 PM
Beachbumcook's Avatar
Beachbumcook Beachbumcook is offline
Got Diesel?
 
Join Date: Jan 2004
Posts: 4,334
Beachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to allBeachbumcook is a name known to all
Quote:
Originally Posted by msgtg
BBC, do you know what year models have this feature?
No... but I think all 6.0L motors have it - regardless of model year... its just a feature of the programing and the motor's capabilities (at least with Ford's programming being used in the PCM).
Reply With Quote
  #11  
Old 04-24-2007, 02:47 PM
msgtg's Avatar
msgtg msgtg is offline
Post Fiend
 
Join Date: Feb 2007
Location: Rural WV
Posts: 5,040
msgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to beholdmsgtg is a splendid one to behold
K, thanks dude!
Reply With Quote
  #12  
Old 04-24-2007, 04:13 PM
BPofMD's Avatar
BPofMD BPofMD is online now
Posting Legend
 
Join Date: Jul 2005
Location: Millersville, MD
Posts: 37,502
BPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputationBPofMD has a superb reputation
Earlier Ford trucks had it too...thr tranny was the topic of this post...my '92 F250 would go into "limp home" mode when the vss module went out and also when the fluid level got too low. It would upshift really HARD and the overdrive lamp would blink to tell you it was in "limp home" mode. Codes would also show up when I took it in for repair....Can't really remember what they did...maybe changed fluid. Finally had to have the tranny overhauled - at about 150,000 miles. Never had the problem again.
Reply With Quote
  #13  
Old 01-28-2017, 09:52 AM
Spratcat80 Spratcat80 is offline
New User
 
Join Date: Jan 2017
Posts: 1
Spratcat80 is starting off with a positive reputation.
Faulty solenoid

I have a 2006 f150 and apparently it's in limp mode. It's shifts from 1st 2nd and 3rd fine but the second it shifts to 4th it feels like it's in nuetral unless I'm accelerating but the second I relieve pressure from the gas pedal it goes straight to nuetral and it's been like this for 3 the past days and the only thing I can find is its most likely one of the solenoids in my transmission that not allowing it to go into over drive so lastnight I get in my truck to go to work and I think we'll if it's doing this because it's trying to go into over drive let me turn my OD off and see if that does anything and to my surprise its driving great so I just wanted to share that and hopefully it'll help until u can get it fixed goodluck
Reply With Quote
  #14  
Old 01-28-2017, 05:11 PM
diesel_dan's Avatar
diesel_dan diesel_dan is online now
FTE Addict
 
Join Date: Jul 2004
Location: Cool, CA
Posts: 4,185
diesel_dan is a splendid one to beholddiesel_dan is a splendid one to beholddiesel_dan is a splendid one to beholddiesel_dan is a splendid one to beholddiesel_dan is a splendid one to beholddiesel_dan is a splendid one to beholddiesel_dan is a splendid one to behold
Spratcat80: If you do have a F150, there is another forum for those trucks. This is the 6.0 Diesel Engine Forum - mostly F250s and F350s with some Vans and others with the engine in their rig.

This thread was just about ready to turn 10 years old btw... Good luck with your trans issue.
Reply With Quote
  #15  
Old 01-28-2017, 05:28 PM
TooManyToys. TooManyToys. is online now
Postmaster
 
Join Date: Dec 2014
Location: Jersey Shore
Posts: 3,227
TooManyToys. is a name known to allTooManyToys. is a name known to allTooManyToys. is a name known to allTooManyToys. is a name known to allTooManyToys. is a name known to allTooManyToys. is a name known to all
Newbeeeeees.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Limp mode 2015f350-6.7 6.7L Power Stroke Diesel 21 05-04-2017 07:14 AM
Flashing CEL + limp mode 2013 Ecoboost @ WOT dave6666 2009 - 2014 F150 14 08-26-2016 02:07 PM
E4OD Limp Mode RIKIL 1987 - 1996 F150 & Larger F-Series Trucks 24 12-01-2015 07:54 PM
"limp home" ??? twags6 Clutch, Transmission, Differential, Axle & Transfer Case 2 10-26-2014 08:55 AM
E4OD limp mode umpalumpa1985 1987 - 1996 F150 & Larger F-Series Trucks 16 01-11-2011 03:39 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
2000, 9903, bilstein, excursion, explorer, f150, f350, ford, forum, home, limp, mode, rancho, southwind, transmission

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 06:19 PM.