gj1982 Posted February 29, 2012 Share Posted February 29, 2012 Hi all I have a strange rasp/rattle noise from my car. The weird thing about it is that this noise only occurs at 2000revs exactly, and goes away again as soon as I pass 2000revs. It also doesn't seem to happen when the car is cold, just when it warms up. I have been advised that it might be a heatshield has come loose. I have checked and the back box shield does have a screw/nut missing meaning its free a bit, but I'm unsure if this is the problem - why would it only happen at exactly 2000revs if that were the case?! If anyone can offer any help I'd be grateful. The car is a 1.7 Puma by the way. thanks! Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted February 29, 2012 Share Posted February 29, 2012 2000 revs is probably the exact resonance of the heat shield. Happens when warm as everything expands a bit and tolerances change. Tighten it up and all should be fine. Some garages just remove them completely. Quote Link to comment Share on other sites More sharing options...
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