The only thing new with the engine is 1. New style pcv valve 2. Changed thermostat back to stock, it had a 160 hypertech thermostat
And now it's making this weird saw cutter noise, non-stop. At first I thought it was cause the engine was still cold but after plenty of driving it's still there. It never made this weird noise before.
10-13 seconds you'll hear it the clearest. It's coming right from the throttle body/intake area when I get close under the hood.
And now it's making this weird saw cutter noise, non-stop. At first I thought it was cause the engine was still cold but after plenty of driving it's still there. It never made this weird noise before.
10-13 seconds you'll hear it the clearest. It's coming right from the throttle body/intake area when I get close under the hood.

It does sound like a vacuum leak to me too. Did you try putting the old PCV Valve back in to see if the noise goes away?



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