ok got a bmw compact and in the mornings mostly when i am going through the gears or reving there is a like rattling noise from underneath i think its something simple just wanted to know if anyone will check this out for me, might just need tightin up
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#149846 - 1st Mar 20074:38pmRe: Someone to check out my car
Registered: 18th Nov 2004
more often that not it'll just be the exhaust mate,either pipe on body or pipe on heatshield. get someone to rev the engine at the revs where u hear the rattle and move the tailpipe up down left and right and see if it gets better and worse..that'll more or less prove that it is the exhaust
Registered: 7th Dec 2003
Loc: Bebington, Wirral
Catalytic converter breaking up Lambda sensor screwed into the exhaust downpipe is loose and could be rattling. Could even be the back box, or one of the rubber mounts have come off, and it's tapping on the sump or the bottom of the car somewhere.