We met 2 ladies on our trip last week...with a new ACE ... complaining about the hi pitch noise...turns out it is the front grill....her dealer replaced it with another insert and noise ceased....also...what Ed said...is a good idea...if you put a screen behind your grill, it will aid in preventing rocks, etc. coming through your radiator.
In addition...noise...in our 24.1, I had an annoying noise on the passenger side...last year when we began traveling in our new coach...turns out...
I close the a/c vent next to the window often....and when I do, I get a whistle...lesson learned...leave it open just a bit
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Ron & Kay n KC too !
2001 Scamp 13'
'KC's Little Box'
Jeep Wrangler TJ
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