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07 Commander Hemi - cold start vibration/noise already replaced transfer case motor
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kandmgard
New User
Sep 13, 2010, 5:31 AM
Post #1 of 3
(1514 views)
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07 Commander Hemi - cold start vibration/noise already replaced transfer case motor
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Hi - hoping someone will have an idea about this issue because my service tech is stumped and we're frustrated and wanting to plan a road trip...
my husband and I have an 07 Commander Limited Hemi 4X4, purchased new, not driven on a daily basis, has about 22,000 miles
with a cold start (been sitting overnight), there's a vibration/noise that happens when the vehicle starts to move, either in reverse or forward, seems to possibly start/worsen as you turn (ie. exiting a parking space or our driveway), goes away very quickly and won't come back unless the vehicle sits for a long time - it feels a little like the ABS is catching - there's a grinding/hesitating/bumpy feel to the vibration
we've driven it to the dealership and it won't replicate unless it sits for 24 to 48 hours - we drove it in on a Wed. morning and let it sit until Friday morning, then went up and drove it, got it to do this once when the service guy and a tech were in the car (for all of about 5 seconds that time but at least they no longer think we're crazy) - the tech thought it was the transfer case motor, unplugged it and it didn't do it so they replaced it and it didn't do it - we picked it up, drove it home, went to drive it two days later, and same thing happened - the dealership never let it sit long enough to replicate and assumed it was fixed - no change in the issue at all
we took it back and they visually inspected the brake system, checked fittings, etc., then let it sit overnight, didn't do it, sent it to be detailed, didn't do it, drove it again and didn't do it, we picked it up and it sat three days, did it
they ran diagnostic and nothing showed up, there's never been a check engine light on...it seemed that when it first started, it lasted a couple of seconds (only long enough to wonder if you felt something and then it was gone and wouldn't do it again that day), then it slowly progressed over months (we sometimes don't even drive it in a week, especially this winter) - it started lasting the first 1/4 mile or so driven so we worried it was something progressing to a serious issue and finally took it to the dealership and have been fighting it ever since - heat of the summer may have lessened it because while it's been hotter out, it lasts a few seconds instead of the first minute or two it seemed to be lasting while it was cooler out but I recently parked it on a very hot day at work on an upward incline (about 25-30 degree incline) and when I left for lunch (usually not sitting long enough to duplicate) it did it as I rolled down and turned to exit my parking space and continued for the 1/4 to 1/2 mile that day
we're unsure about what the issue may be - anyone else experienced this?
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Sidom
Veteran
/ Moderator
Sep 13, 2010, 8:16 PM
Post #2 of 3
(1493 views)
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Re: 07 Commander Hemi - cold start vibration/noise already replaced transfer case motor
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Well I don't see too many Commanders, so I haven't seen this exact problem but it does sound a little like a steering problem I've seen on newer low mileage Caravans....
The Carvans have a low speed & stopped shudder problem. The is a TSB for it, where the p/s hp line is replaced with a longer one & cooler installed if there isn't already one. I also flush the system. This problem does last longer than the one you are describing but just you mentioning it gets worse when turning I would want to rule it out as a possible cause..... I'm sure they must of looked at it....
I'm away from my data base, so I can't see if the Commanders have any TSBs for this problem but I would look in to it.....
That's about the only thing the pops into my mind at the moment
(This post was edited by Sidom on Sep 13, 2010, 8:17 PM)
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kandmgard
New User
Sep 14, 2010, 5:02 AM
Post #3 of 3
(1483 views)
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Re: 07 Commander Hemi - cold start vibration/noise already replaced transfer case motor
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Thanks for the idea, Sidom - I'm trying to pass along as many ideas as I can to the dealership when I take it back in this week
they said that they'd checked for any bulletins on my issue but didn't find anything that seemed to apply - I will print your response and take it with me :-)
I'm not sure they've thought of a power steering related problem - I think they've all been standing around with their cup of coffee and scratching their heads...
any other thoughts would be greatly appreciated
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