Lurching/surging/jerking on highway with cruise control - Chrysler 300C Forum: 300C & SRT8 Forums
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Old 09-08-2011, 11:28 AM   #1 (permalink)
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Lurching/surging/jerking on highway with cruise control

First, I'm new here, so hey everybody. Second, I did search this forum for over an hour...while at work...getting paid. I found some info by searching google. Third, I just bought my 05 300C a month ago and I FREAKING LOVE IT!

2005 300C with 87000 miles.

The issue: When I'm driving at a constant speed, highway or in town, cruise on or off, and I accelerate ever so slightly, I feel a slight lurch/surge/jerk like a clutch grabbing. This is most noticeable on the highway with cruise on. Probably because I get used to the smooth, constant speed.

I've gathered that it may be several things.
1. Normal
2. a problem with the torque converter
3. a symptom of the MDS
4. a worn egr or pcv valve

I don't have a diablo so I can't turn the MDS or EGR off. I don't plan on getting one. I did have a code for a catalytic converter. The dealer replaced it and cleared the code. I don't know if that's pertinent information or not, but there it is. I purchased an extended warranty so I suppose I could have a mechanic look at it, but I'd rather check here first, see what the masses have to say about it.

Has anyone else experienced this strange issue? Did you fix it? How?

Thank you all.

Oh, nice forum. I think I'll stay a while.
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Old 09-08-2011, 12:41 PM   #2 (permalink)
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welcome to the forum from England (the original one!)

I'm guessing your transmission fluid level is low - and its a real art (and absolute neccessity) to get the right level! -if I'm right, you'll need a special dipsick & a temperature probe / laser thermometer. It may be caused by an electrical connector on the tranny that commonly has an o ring leak....any red fluid under the car?



http://www.300cforums.com/forums/srt...ssion+problems

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Tranny Dipstick...hope this helps anyone with similar issues
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Old 09-09-2011, 01:33 PM   #3 (permalink)
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X-2 on what Kaiser Bill said and also it might be time to do a transmission flush and service with a filter change.
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