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I just bought my 07 CRD within the last month. It has had this issue since i bought it. When the engine is cold the transmission has what feels like a very HARD shift at low speed. I thought it was happeneing when the transmission shifts from 1-2nd gear. The more familiar i get with this issue the more concerned i am. This morning i manually put the transmission in 1st and observed the same "hard shift" between 1500-2000 rpm (suggesting its not the shift.) Under harder acceleration it is not noticeable and after it warms up it goes away. I should be getting a dipstick within the next week so i can start troubleshooting. Is anyone familiar with this issue?
 

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You might want to try posting this in the WK subforum. This one is for 2011+ vehicles
 

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Long Live the Grey Ghosts
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hopefully they will move it for you.....


but sounds like a fluid filter issue. no power flush.....jeep recommend drain and fill.

might need more than one to get the old crap out of the torque converter as it doesnt drain.
 

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Did you find out what the issue was with the clunk?? Mine (2009 WK CRD) did it three times yesterday when I first started out on a two hour drive. It did it when shifting from 1st to 2nd during light acceleration. Then it seemed fine for the remainder of the 2 hour drive until I was home. At the corner to my house and then climbing the driveway, it did not want to go from a standing stop. It did go forward, but seemed to be slipping. The engine responded fine, but the vehicle did not accelerate normally. I have been noticing for a while a harder than normal shift from 2nd to 1st when coming to a stop for a number of months now.:eek:
 

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Our 2008 WK-CRD occasionally would sam to slip, when actually it ws starting in 3rd gear... Solution was to pull over turn off the ignition, take key (fob) out of ignition, reinsert key and start the jeep. This reset the transmission control unit. Did ok after that. Couple days later "check engine" light came on and mechanic read codes - transmission Service needed - (that's a whole other story)

Try the "restart/reset" ... see if that helps
 
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