whomp noise at about 2k rpm going up hill
#1
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So I just got a 2004 XJR and I've noticed when I'm going up the hill to my house that at about 2000 rpm going say 25mph ish there is a whomp noise which I think happens when I lift off the gas. Any ideas what it could be.
Also for full disclosure the day after I got it (last Saturday) I hit the mother of all potholes on the freeway destroying my rim and tire so I'm running on the donut till they can get a replacement (it's a coventry hornet wheel)
Anyway any ideas?
Also for full disclosure the day after I got it (last Saturday) I hit the mother of all potholes on the freeway destroying my rim and tire so I'm running on the donut till they can get a replacement (it's a coventry hornet wheel)
Anyway any ideas?
#2
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#8
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It is the transmission. I believe the XJ shares the same trans as the XK and this topic was discussed on the 1997 on xk page here. It will as well make the whoop noise on level ground under moderately hard acceleration when shifting. If your car is under warranty get it in and document the problem asap. There are tsb on the topic at the dealer. They will do a trans fluid flush with a special secret additive. If the additive does not fix it, things can get expensive fast.
Good Luck
brdave
Good Luck
brdave
Last edited by brdave; 02-06-2010 at 02:43 PM.
#10
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dpenny, I have seen lots on this in the 1997 onwards xk section of this forum. I am not a technician but had this problem and went through the whole process with the dealer as well as read as much as I could on this forum when I owned my 04 xkr. I have since disposed of that car, the repairs almost killed me. Search whoop/transmission additive etc. in that section and good luck. I believe it is the same trans as in some german cars. Sorry I don't have the answers, hopefully someone else will chime in here. good luck
brdave
brdave
Last edited by brdave; 02-06-2010 at 08:05 PM.
#11
#12
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Drew that's my kind of answer
I tried coming up the hill in sport mode and no whomp/whoop noise so I'll just do that and if I hear it more often I'll go the additive/flush route (which I will prob do in the next 10k miles at some point anyway as I have 50k miles on it)
Unless someone else thinks that the noise is indicative of the transmission being in desperate need of the flush asap lest it destroy itself.
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Unless someone else thinks that the noise is indicative of the transmission being in desperate need of the flush asap lest it destroy itself.
#13
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