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- Jul 18, 2022
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Hi there. Was the noise between 1500 and 2000rpm in neutral (revving engine) or only under load?The offending cooling hose has been replaced and the noise is now gone. Apparently inside this hose is a small ball that was rattling causing this odd noise once the engine warmed up. It only affected some Grendiers and a new part number replaces this older version. I am so happy now that i can just hear the growl of the diesel