Hi, seems like im finding problem after problem recently ive noticed once my car has done a long fast motor way run and i come to stop and idle for 5 mins it sounds as tho the engine is revving slightly as if the rpm was goin from 600 to 1000 rpm over and over however the rpm dial is just sitting at idle, its hard to explain the noise its like voom..normal..voom..etc lol just wondering if any 1 had this problem before? ive had new exhause system cat and everyting i took it back they said definatly nothing todo with the exhaust soo i don't know...
strange sound when idle
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