D5 warbling accelerator
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Joined: Apr 2008
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D5 warbling accelerator
2003 s80 D5 strange warbling sound when throttle depressed, more throttle higher the noice. almost like a pressure valve. only does it when under load, ie. selecting higher gear a bit early. stops when revs reach normal for that gear. thought about changing fuel filter as car has done 102k. any help most gratefully received.
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