AJA Posted April 19, 2022 Report Share Posted April 19, 2022 Hello everyone. My 14’ DJ 2.4L recently started making knocking noise at startup when cold. I’m in So Flo so it’s hot here. Oil change every 3000 miles. Changed almost all belt attached components (idler, a/c comp, pulley etc) reason I mentioned this is bc noise is coming from around lower belt are. Someone posted audio clip, so is it common? Thanks! ✌️ Quote Link to comment Share on other sites More sharing options...
John/Horace Posted April 19, 2022 Report Share Posted April 19, 2022 If you search in the site, you will find not really. How many miles on engine ? You can remove surpentine belt and run car for 10 seconds, careful, no water pump flow like this. This takes, everything external that spins out of the mix. If still a noise it is internal like timing belt tensioner or roller follower, valve lifter etc. Water pump bearings can knock when they start to fail; but usually lip seal on front starts to leak, or weap hole shows signs. A high milage kinda fIx usually. Engine stethoscope can pick that up the noise. If you are going to a shop and you have to explain how to trouble shoot….you are at the wrong place. 2late4u 1 Quote Link to comment Share on other sites More sharing options...
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