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Louder Engine Noise @ 3500 rpm
Posted by AndyH [Email] (more from AndyH) on Sat, 3 Feb 2001 15:40:18
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What would cause the following problem ?
After a fairly major engine rebuild, timing chain, head gasket, crankshaft journal bearings etc, my car runs very sweetly especially considering 168k miles. However at exactly 3500 rpm / 90mph there is a noticable increase in engine / road noise or harshness. It is impossible for me to determine if its coming from the engine or from the rolling components as it only happens under load and therefore not when you rev the engine past 3500 at rest. It's not a auto gearbox noise either becuse it has been there since the rebuild and the auto box was replaced shortly after that and the noise stayed.
Any help out there to get rid of this irritating problem
Cheers Andy
'93 2.3t Auto 168k
Before the rebuild the engine was much quiter all the way to the red line.
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