Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Troubleshooting/Problems

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 05-15-2010, 06:08 AM
violant00's Avatar
Premium Member
My Jeep: 2000 4.0L WJ
 
Join Date: Feb 2010
Location: New york, NY
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2203
violant00 is on a distinguished road
code p 0720

P0720 started it up this morning and the checl engine light came on anybody kknow what that is?
__________________

__________________
<img src=http://i955.photobucket.com/albums/ae39/violant00/IMG_0644-1.jpg border=0 alt= />\


00wj Red genIII projector head lights, K&N CAI. (more coming soon!)
Reply With Quote
  #2  
Old 05-15-2010, 11:57 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,281
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526324
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: code p 0720

DTC P0720 Output Speed Sensor Circuit Malfunction
When i'm not wrong that is the output speed sensor from the tranny. Remove, clean and reconnect the connector to see if this will solve your problem.
__________________

__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #3  
Old 05-15-2010, 12:21 PM
violant00's Avatar
Premium Member
My Jeep: 2000 4.0L WJ
 
Join Date: Feb 2010
Location: New york, NY
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2203
violant00 is on a distinguished road
Re: code p 0720

Yeah I ready that on wj... is it an easy job?
__________________
<img src=http://i955.photobucket.com/albums/ae39/violant00/IMG_0644-1.jpg border=0 alt= />\


00wj Red genIII projector head lights, K&N CAI. (more coming soon!)
Reply With Quote
  #4  
Old 05-15-2010, 02:27 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,281
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526324
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: code p 0720

Cleaning the connector is very easy. You just have to crawl underneath your car and the output sensor is on the RH aft side of the tranny (at least on the 545RFE i have). If the cleaning doesn't help, you will have to look for some damaged wiring or maybe even the sensor itself. You could swap the input and output sensors to see if the fault stays or not.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #5  
Old 05-15-2010, 03:37 PM
violant00's Avatar
Premium Member
My Jeep: 2000 4.0L WJ
 
Join Date: Feb 2010
Location: New york, NY
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2203
violant00 is on a distinguished road
Re: code p 0720

What exactly does that sensor do because I notice now that the tranny is having trouble shifting out of first gears
__________________
<img src=http://i955.photobucket.com/albums/ae39/violant00/IMG_0644-1.jpg border=0 alt= />\


00wj Red genIII projector head lights, K&N CAI. (more coming soon!)
Reply With Quote
  #6  
Old 05-15-2010, 04:37 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 5,281
Thanks: 9
Thanked 127 Times in 120 Posts
Rep Power: 526324
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: code p 0720

The TCM uses the input and output speeds from the tranny (and many other inputs) to calculate the shifting schedule. So if you miss on of the inputs, it can be that it starts shifting harsh or not at all.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #7  
Old 05-15-2010, 09:27 PM
violant00's Avatar
Premium Member
My Jeep: 2000 4.0L WJ
 
Join Date: Feb 2010
Location: New york, NY
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2203
violant00 is on a distinguished road
Re: code p 0720

problem solved 99 and 00 difference in oss had to go back to autozone twice but i got it done so i don't have to take the train tomorrow
__________________

__________________
<img src=http://i955.photobucket.com/albums/ae39/violant00/IMG_0644-1.jpg border=0 alt= />\


00wj Red genIII projector head lights, K&N CAI. (more coming soon!)
Reply With Quote
Reply

Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
V-Leds Coupon Code Frankie Audio, Video, Navigation & Electronic Modifications 97 08-09-2012 09:24 PM
My Jeep is throwing a code and I need some help Chuck Troubleshooting/Problems 22 01-06-2011 06:13 AM
P0420 trouble code Hamze Troubleshooting/Problems Discussion 5 03-29-2010 03:25 PM
p1391 code am2owens Troubleshooting/Problems Discussion 3 03-03-2010 12:34 AM
The Cause of My P0868 Code Robert Palmer Grand Cherokee - WK 10 09-29-2009 08:15 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 07:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.