Jaguar XFR 2014 - weird clunk when pressing on gas in first gear
#1
Jaguar XFR 2014 - weird clunk when pressing on gas in first gear
Hello everyone!
I have strange symptom that might be indicative of an incoming big and expensive problem.
Here's a recording (better use headphones) -
The issue occurs when I press gas to accelerate (even very very smoothly). When i'm moving on idle - everything is fine. After this initial 'clunk' - everything is fine, shifts are smooth, there is no slippage and etc. Or, at least, it's not obvious for me.
A couple of days ago it was snowing very hard and had to turn off DSC to be able to get to the garage. During the 'slippage' of wheels I occasionally felt some 'clicks' through the pedal and it could hear it. But still - the power delivery was perfect and nothing else was noticeably wrong.
What can it be? Engine mounts, transmission fault of some sort?
I would be very grateful if you could help me and point out where should I take a look.
Merry Christmas!
Pics (or it didn't happen as we all know):
I have strange symptom that might be indicative of an incoming big and expensive problem.
Here's a recording (better use headphones) -
The issue occurs when I press gas to accelerate (even very very smoothly). When i'm moving on idle - everything is fine. After this initial 'clunk' - everything is fine, shifts are smooth, there is no slippage and etc. Or, at least, it's not obvious for me.
A couple of days ago it was snowing very hard and had to turn off DSC to be able to get to the garage. During the 'slippage' of wheels I occasionally felt some 'clicks' through the pedal and it could hear it. But still - the power delivery was perfect and nothing else was noticeably wrong.
What can it be? Engine mounts, transmission fault of some sort?
I would be very grateful if you could help me and point out where should I take a look.
Merry Christmas!
Pics (or it didn't happen as we all know):
#2
#3
First off the XF's suspension and driveline is VERY BMW like, so my second search for XF chassis info is always in BMW forums. Having said that, I would start looking at things like the driveshaft guibo couple, the center bearing support, the differential bushings and suspension bushings.
#4
If it only does it once after starting up, it is the ABS self-test. If every acceleration from a stop you hear it, my vote goes to engine/trans mounts. The engine rocks from the low end torque and you would feel it by the seat of your pants. This guy ripped up his in just a few thousand miles.
https://www.jaguarforums.com/forum/x...6/#post2005703
https://www.jaguarforums.com/forum/x...6/#post2005703
#5
Mine does something semi similar. I posted about it. It only happens right when taken off after starting the car cold, only once, and only when turning sharp (such as pulling out of the driveway). I have come to believe that it's maybe something in the electronic diff locking/unlocking when cold.
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MLRocafella85
XJ XJ6 / XJR6 ( X300 )
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07-28-2011 04:40 PM
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