05 Jeep Grand Cherokee Limited 245 T case FIXED

Post Reply
gsferraro
Posts: 682
Joined: Fri Mar 14, 2014 7:01 pm
First Name: Gary
Last Name: Ferraro
Other:

05 Jeep Grand Cherokee Limited 245 T case FIXED

Post by gsferraro » Tue Jul 22, 2014 12:04 pm

Hello,
Have this jeep with this 245 Transfer case.Im going to describe this best as i can. When its cold and you make a turn it feels like a clutch chatter and a moan. When it hot no problem ONLY cold, so far i scanned the tccm no codes, changed the fluid with chatter free fluid from rockland standard gear, problem still there. I spoke to a transfer case guy and he told me to get the tccm reflashed and should fix it. Toughts on this problem please. Gary

User avatar
tranibob
Posts: 2093
Joined: Thu Oct 31, 2013 3:15 pm
First Name: Robert
Last Name: Moreau
Other:
Location: Laguna Beach, CA
Contact:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by tranibob » Tue Jul 22, 2014 1:45 pm

I did not see any reflash listed for this vehicle in ProDemand for the transfer case. It sounds like the computer is applying the clutches too much when cold or the clutches are damaged. I would monitor the transfer case data to see what kind of duty cycle % it commands on turns cold vs hot. If it is the same then the issue must be the transfer case itself.

Of course on those you got a first check the basics making sure the pressure is identical in all 4 tires and that they all have the same circumference.
Robert Moreau
Technical Support Representative
Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

Keep Up with Sonnax via E-mail, Facebook, RSS & More! Become a Sonnax Insider

User avatar
dhritsko
Posts: 1113
Joined: Mon Oct 28, 2013 3:43 pm
First Name: David
Last Name: Hritsko
Other:
Location: Walton Hills , OH

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by dhritsko » Tue Jul 22, 2014 1:59 pm

if it is high mileage it is probably the clutch pak . like Bob stated check tire size and quiz the customer about when this started .
Dave Hritsko
Transtar Industries
Technical Service Manager

gsferraro
Posts: 682
Joined: Fri Mar 14, 2014 7:01 pm
First Name: Gary
Last Name: Ferraro
Other:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by gsferraro » Tue Jul 22, 2014 2:18 pm

I will check it with the scan tool. First things i did was tire pressure and i have a stagger gauge for tire size. I will post what i find. Its has 100k on the clock.
Thanks Gary

barrycole
Posts: 1066
Joined: Thu Oct 31, 2013 2:58 pm
First Name: Barry
Last Name: Cole
Other:
Location: Toronto, Ontario ,Canada

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by barrycole » Tue Jul 22, 2014 2:23 pm

Would be for sure looking at the clutch pack. 245 Quadra Drive had those issues. Barry
Barry Cole Toronto, Ontario, Canada. Retired after 35 years

gsferraro
Posts: 682
Joined: Fri Mar 14, 2014 7:01 pm
First Name: Gary
Last Name: Ferraro
Other:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by gsferraro » Tue Jul 22, 2014 3:37 pm

Bob,
Should i look at front and rear diff duty cycle solenoids? Gary

User avatar
tranibob
Posts: 2093
Joined: Thu Oct 31, 2013 3:15 pm
First Name: Robert
Last Name: Moreau
Other:
Location: Laguna Beach, CA
Contact:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by tranibob » Tue Jul 22, 2014 3:44 pm

No idea I would have to see the data, if you can take a movie and send it to me I could then put in on my cloud drive and provide a link so that all of us could look at the data. I am not familiar enough with the system you are working on to go from memory on what controls what. But the computer will command the clutches to apply in the transfer case if a wheel is going faster then another and that's the data we need to monitor. What it is called I have no idea until I see it unfortunately.
Robert Moreau
Technical Support Representative
Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

Keep Up with Sonnax via E-mail, Facebook, RSS & More! Become a Sonnax Insider

User avatar
tranibob
Posts: 2093
Joined: Thu Oct 31, 2013 3:15 pm
First Name: Robert
Last Name: Moreau
Other:
Location: Laguna Beach, CA
Contact:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by tranibob » Tue Jul 22, 2014 3:46 pm

ALso if this system controls some sort of duty cycle for the front and rear diff we would need to see what that does because the issue could be in either diff if there is clutches in there applied by pulsion via PWM solenoids.
Robert Moreau
Technical Support Representative
Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

Keep Up with Sonnax via E-mail, Facebook, RSS & More! Become a Sonnax Insider

gsferraro
Posts: 682
Joined: Fri Mar 14, 2014 7:01 pm
First Name: Gary
Last Name: Ferraro
Other:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by gsferraro » Tue Jul 22, 2014 4:03 pm

ok, Honestly not sure how to do a movie on the modis, i dont think there are clutches in the diff, its no pozi, i checked that. I do have wheel speed or wheel rpm(forgot what it said). When i looked at front and rear diff duty cycle when i drove it they both read zero, i think thats not used.I just drove the jeep it was ok, i will let it sit overnite check it first thing when the problem occurs. Gary

User avatar
tranibob
Posts: 2093
Joined: Thu Oct 31, 2013 3:15 pm
First Name: Robert
Last Name: Moreau
Other:
Location: Laguna Beach, CA
Contact:

Re: 05 Jeep Grand Cherokee Limited 245 T case

Post by tranibob » Tue Jul 22, 2014 4:16 pm

Usually you get front and rear driveshaft RPM but this one might use the wheel sensor, i could not really look up the principle of operation without having all the specs of the vehicle or a VIN.

As for taking a movie with your Modis it is really easy, transferring it to your computer is a bit more complex but not hard either. Not being able to do that is a shame because it leaves behind 50% of the ability your scanner has, really makes you life harder than it should be to not be able to record and graph the data. If you want to learn how to do it then here are two links where it explains the basics and if anything is not clear just ask i'll be glad to help with that.

http://www.valvebodypros.com/index.php? ... odis_setup
http://www.valvebodypros.com/index.php? ... odis_movie
Robert Moreau
Technical Support Representative
Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

Keep Up with Sonnax via E-mail, Facebook, RSS & More! Become a Sonnax Insider

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest