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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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"Popping" noise when coming on or off the acceleratorViews : 1131 Replies : 4Users Viewing This Thread : |
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Jan 25th, 2011, 17:51 | #1 |
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"Popping" noise when coming on or off the accelerator
Hi, I know noises are very difficult to describe or diagnose but here goes:
I have a sort of popping sound when I use or release the accelerator. it *seems* to happen much more when the engine is warmed up than it does direct from a cold start. The popping or mild clunk as it could also be described happens within about half a second of the pedal being touched or released. I don't think it happens when starting from stationary rather when easing off the pedal and then back on again. It almost like there is some "slack" in the transmission, maybe a worn joint somewhere or something. Anyone got any ideas? Many years ago I had a Ford Explorer and I seem to recall it might have done the same thing but much less often or perhaps I didn't pay as much attention to it back then. These 2 cars are my only experience of AWD, large SUV type cars and automatic transmissions so for all I know it might be normal..... Thanks. |
Jan 25th, 2011, 19:49 | #2 |
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If its a T6 they are known for driveshaft problems.
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Jan 25th, 2011, 19:54 | #3 |
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Mine does the same and it is the vacuum adjusted engine mounts. Have a look under the engine bay you will see the vacuum pipes linking the mounts. These will react to throttle on and off as you say.
Why they have vacuum engine mounts rather than ordinary ones, I don't know. Perhaps someone can explain? |
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Jan 25th, 2011, 20:08 | #4 | |
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Sorry, forgot to say it's a D5
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Jan 26th, 2011, 21:47 | #5 |
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