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Has anyone had a problem with a drive belt squealing on startup after it rains or after washing? My dealer told me this is common in high humidity areas (I'm in Florida). I don't buy that answer. I looked last night and performed a water test. It appears that the water that drains into the drain tube from the air induction area in the hood (passenger's side) runs down the front passenger's side inner fender well onto the plastic cover that runs along the bottom of the engine and onto the bottom drive belt. Problem is the drain tube can't be repositioned because it's attached to an opening in the fender well. Anybody heard of this problem and/or know a fix?Thank you,
 

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I'm in the opposite corner of the country (southeast WA state) and opposite weather (quite dry on this side of the state).

But, also having a diesel, I have not had any squealing from the belt. I've washed it several times, driving it right afterwards. Driven in rain, nothing. And just recently drove back to Maryland, with plenty of humidity along the way in MO, IL, IN, OH, and WV. Have never had anything resembling a drive belt squeal.
 

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What he said ^^^^^. I live in the semi-humid NE and no squeal in my diesel. I’d take it back in and suggest they had not solved a problem and suggest they tighten the belt adjustment a bit. I do get a bit of water in the air intake housing in rain and I have checked that my drains are free.
 
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When I first start my diesel promaster after or during a rain, I get a squeal but if I rev the engine a little it goes away and stays away.
 

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Discussion Starter #5
Ron, that's exactly what mine does. It seems the drain on the air induction system for the A/C drops water onto the plastic engine protection cover on the bottom of the engine which then splashes onto the lower belt. I tried to adjust the drain hose a bit; we'll see what happens. Ultimately, it sounds like it's not a big deal. Thanks for the response.
 

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Mine has 500 miles on the clock and squeals in the morning if it rained the night before. It goes away in a few seconds.
 
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Im up in Jacksonville Beach and no issues with the Gasser squealing. At least you found what could be the culprit!
 
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Mine squeaks too after a rain/ wash. Not humid, northern CA. It goes away fast, but I did mention it to my service advisor along with all the water that drains on to the engine from the joint in the cowling leaking. They will take a look when I bring it in for next recall.
 

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Discussion Starter #9
Stonehopper, please let me know if your dealer discovers anything and if they repair it. Thanks
 

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mine squeaks too, for a little bit then goes away. I noticed it after a rain or wash
 
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I found a link that resumes a solution that a person posted years ago on italian motorhome forum. Meantime there were in Europe some recalls and some modifications (or covers added) for the problem by Fiat and than FCA.

Anyway could be useful for some. It is in italian.
https://www.camperlife.it/fai-da-te/meccanica/modifica-eliminare-le-infiltrazioni-dacqua-nel-vano-motore-9525.html

The main defect, that for me is more due to the way is assembled in production line (not all vehicles have that defect), is the one of the pieces junction at the base of the windshield.

In the photos You see the use of silicon, but there are better "sealers", dark color (black), anti UV, ... designed to be used for vehicles.
 

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I have no squeeking problems but I checked the plastic at the bottom of my windshield and one side is warped out quite a bit. I haven't noticed water going in but it must so I'm going to try the sealing trick you posted.

Is this more of a diesel problem than a gasser problem?

Thanks for the link!
 

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in Charleston S.C.

Yes I have had the problem and intend to talk to the dealer at the next oil change. I will post if I get an answer. It is high temps/humidity and after rainstorms that I have noticed it.
 

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Living on the wet side of the Cascades in SW Wa I wake up my neighbors almost daily with the squeal...lol It rains here way to much
I have the local dealer look at it, but after past experience I won't go back there so I like others rev it up a bit and it goes away until the next rainy day.
 
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I have had the same squeal problem, but Beware in the Winter. We had had a rain followed by freezing temps. I went out to start my diesel and it acted like a low battery, it finally turned over and smoke boiled from under the hood. The squeal was there but stopped and so did the smoke. Everything seemed to work fine until Spring and a very warm day. NO air conditioner. Seems the Rain turned into Ice and the belt was frozen to the compressor. The dealership and I came up with a fix. I stopped by a sign shop and got two vinyl magnetic strips to fit over the hood vent openings. When it forecast rain and freezing temps I would put the strips over the hood openings and take them off the next morning. That solved that problem. I don't mind a little squeal but I sure don't want smoke and a broken belt again. Hope this will save someone problems.
 

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Stonehopper, please let me know if your dealer discovers anything and if they repair it. Thanks
Brought my pm today to replace a faulty solenoid valve (not broken but made lots of strange sounds) mentioned the water issue. They told me the cowling was warped and ordered me a new one. I'll let you know how it goes, if I ever get it and if the new one fixes the leaking.
 

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Thanks to all forum members! I thought the recent onset of squealing was just a poorly adjusted drive belt, not that I can actually see the drive belt but I have faith that it is in there. But since I am in western Washington and the return of the monsoons seems to coincide with the noise I'll have to go out and check my scuttle.
 
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