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Weird Engine Behaviour


checkstr

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Okay...I'll try to explain this the best I can.  As a note, I have the 3.6L V6 FWD.  Lately I've noticed something strange with the way my engine's been behaving.  When I am accelerating past 3rd or 4th gear, the transmission shifts into the next gear and then it just bogs down.  It basically feels like the car is struggling to keep up with the acceleration, you can also feel the car vibrating (it's not a horrible vibration, but it is noticeable).  The funny thing is, it seems to only happen in the one particular gear...Whether it's 4th or 5th, I'm not too sure.  It feels similar to when you're driving a manual transmission, and you shift to the next gear too quickly and the car does the little shake thing as the RPM's try to catch up.  The engine behaves normally upon acceleration from a stop.  I have had the spark plugs replaced, air filter replaced, power steering fluid replaced, transmission fluid replaced (about 6mths ago), camshaft position sensor replaced and finally, the oil cooler replaced. The engine isn't throwing any codes, and if use the +/- manual function, the engine runs fine. So I'm wondering if it's perhaps a sensor (Throttle position?) or anything else that might be causing it?

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I get a bad feeling about the transmission.   If I were you, I'd have a look in the transmission pan to see if there are any metal shavings.   If not, then I'd start down the sensor route.  I hope I'm wrong, but it seems like these DJ transmissions are beginning to go bad on a number of vehicles.  Mine did...

 

Peace.

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well  no mention of the miles and weather the trans fluid has been changed or not, 100 k is the recommended time but  my 2014 crossroad  I had mine done around 65 k , just made sense as it is a hot and busy piece of metal with a lot of gears and such. have about 91 k on it now.. knock on wood......

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Yeah, I have an uneasy feeling too but I hope I'm wrong as well!  A little backstory...Bought it used in September of last year and it had 112,000 km's (roughly 70,000 miles).  The day after I bought it, it sprung a transmission fluid leak under the pan.  Brought it back and they replaced the pan and drained the fluid.  In February, sprung a huge oil leak which ended up being the oil cooler which apparently is a common issue.  Had that replaced along with the spark plugs.  Basically, it's been one thing after another but I'm trying to hold on to hope that this isn't anything too major (I'm still paying for the next four years!).

 

Currently, the car has 128,000 km's (roughly 79,500 miles).  This issue started to present itself around Christmas but it was pretty minor and didn't really think much of it.  But lately, it's fairly noticeable.  The other issue is the harsh clunk it makes shifting between 2nd and 3rd (both upshifting and downshifting), almost feels like I'm getting hit from behind.  Was told from two different dealearships that this was noticeable pentastar behaviour :shrug:

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2014 crossroad here with 91 k only problems so far was a oil sender go bad ( covered under my ext warranty) and upper rear control arm problem ( fixed out of my own pocket , but pro would have been fixed under my warranty had i used it) sorry to hear of your problems, hopefully it will be clear sailing as long as your trans holds up

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  • 4 years later...

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