Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: V8 Mouseman on December 15, 2010, 10:52:58 AM

Title: HELP! WJ 2002 Grand Cherokee overland V8 4.7 Automatic Transmission
Post by: V8 Mouseman on December 15, 2010, 10:52:58 AM

When the box changes from 2nd to 3rd under load (uphill or accelerating hard) it seems to 'stick'; at about 3K revs and 'flatlines' ie wont keep accelerating (like i hit a rev limiter) but then after a second or two it carries on up the rev range to a third gear change.

Anyone  :jpshakehead:any ideas??

Title: Re: HELP! WJ 2002 Grand Cherokee overland V8 4.7 Automatic Transmission
Post by: Dutch on December 15, 2010, 11:51:36 AM

Have you tried to see if there are any fault codes (the 5 x ingnition on/off thing?)

Title: Re: HELP! WJ 2002 Grand Cherokee overland V8 4.7 Automatic Transmission
Post by: Bishops Finger on December 15, 2010, 11:52:04 AM

Sensor issue?

Title: Re: HELP! WJ 2002 Grand Cherokee overland V8 4.7 Automatic Transmission
Post by: scrw on December 15, 2010, 07:34:05 PM

hmmm, speed sensor issues, but check the codes

Title: Re: HELP! WJ 2002 Grand Cherokee overland V8 4.7 Automatic Transmission
Post by: tim_aka_tim on December 15, 2010, 08:05:01 PM

Mouseman. What they're alluding to is this...... http://www.wjjeeps.com/faultcodes.htm (http://www.wjjeeps.com/faultcodes.htm) Scroll down
to the bit that says "Retrieving codes."  Do what it says. Write down the codes it reports if there are
any. They are in the format Pxxxx, where xxxx is a number, e.g. P0120.
Scroll down that page to see what it means, and report back here for advice.