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#4565025 - 11/05/17 03:32 PM Diagnosing serpentine belt
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
As a follow up to me spilling coolant on my serpentine belt on my 2002 Buick Century I was in there pouring some more water while I was running the engine and used a little simple green trying to get it clean and when I was slowly pouring water on my belt it actually completely stopped turning for about 5-10 seconds after I stopped pouring the water but then started to go again eventually. I was able to duplicate the issue every time I poured water into it while running it stopped the belt again.

I'm trying to figure out if it's normal for a serpentine belt to slip and stop turning when it's really wet or if I should just start throwing parts at it like a new belt and pulley.

Previously to me spilling the coolant on the belt I didn't have any issues but now sometimes I notice it's slipping even when I'm driving and not wet from a stop because the power steering has stopped working a few times for a split second until you get above idle.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565047 - 11/05/17 03:58 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
rollinpete Offline


Registered: 03/20/17
Posts: 501
Loc: West Ma.
I don't know but you probably just ruined a good belt...
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97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive183k miles
Last Change;
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I like my oil (slippery).


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#4565063 - 11/05/17 04:11 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
researcher Offline


Registered: 04/12/12
Posts: 279
Loc: Michigan
Originally Posted By: 901Memphis
As a follow up to me spilling coolant on my serpentine belt on my 2002 Buick Century I was in there pouring some more water while I was running the engine and used a little simple green trying to get it clean and when I was slowly pouring water on my belt it actually completely stopped turning for about 5-10 seconds after I stopped pouring the water but then started to go again eventually. I was able to duplicate the issue every time I poured water into it while running it stopped the belt again.

I'm trying to figure out if it's normal for a serpentine belt to slip and stop turning when it's really wet or if I should just start throwing parts at it like a new belt and pulley.

Previously to me spilling the coolant on the belt I didn't have any issues but now sometimes I notice it's slipping even when I'm driving and not wet from a stop because the power steering has stopped working a few times for a split second until you get above idle.



the water would've caused it to slip and more slippage = heat = wear (in my opinion).. I'd probably just replace the serpentine belt with another one. Who knows how contaminated it really got. best to not worry about it and replace it.

I got my recent serpentine belt from rockauto, got a gates brand, excellent so far.. and not expensive!!

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#4565085 - 11/05/17 04:33 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
2010Civic Offline


Registered: 12/06/14
Posts: 363
Loc: Minnesota
Just replace the belt. They are cheap.
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#4565097 - 11/05/17 04:46 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
Rand Offline


Registered: 08/20/03
Posts: 12740
Loc: NE,Ohio
Why would you be cleaning it with it running?

Regardless I think you need a new belt now if you didnt before.
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#4565101 - 11/05/17 04:48 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
I don't think getting it wet would cause it to stop. I've had my Liberty up to the hood in water with nary an issue. I think you might want to replace the belt, and idler pullies (or if you can get a tensioner with the pullies on it, do that).
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#4565376 - 11/05/17 09:44 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
I'm guessing by looking at the tensioner that it's extended to its max range and the belt is stretched so it's contributing to the slipping.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565398 - 11/05/17 10:04 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
djb Offline


Registered: 01/16/06
Posts: 727
Loc: Los Gatos CA
Originally Posted By: 901Memphis
I'm guessing by looking at the tensioner that it's extended to its max range and the belt is stretched so it's contributing to the slipping.


It's worth checking if the tensioner is at its limit, but belts don't stretch significantly. It's been decades since that's been a problem. If the belt is too long, the wrong belt was installed.

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#4565428 - 11/05/17 10:32 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I don't see how pouring water on a belt would stop it from turning. Are you saying the pulleys were turning but the belt stayed still ?

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#4565812 - 11/06/17 11:35 AM Re: Diagnosing serpentine belt [Re: Merkava_4]
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
Originally Posted By: Merkava_4
I don't see how pouring water on a belt would stop it from turning. Are you saying the pulleys were turning but the belt stayed still ?


Yes the crank pulley was turning but everything else stopped including the belt
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565905 - 11/06/17 01:06 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
I just tried to duplicate the problem and pouring water on the running belt didn't cause it to stop.

I think maybe the simple green was causing it to slip, but I was trying to clean both sides of the belt just now while it was at idle
with an old cloth and I noticed when I pushed down in the water pump pulley at first with the cloth I could cause it to stop rotating if I pressed hard enough, but after a few passes with the cloth and cleaning the face of the pulley and both sides of the belt, I got lots of black gunk off the belt and I can't cause the water pump to stop with the cloth anymore, so maybe it was just dirty?

I need a few dry days to see what happens, but I think I might be fighting another issue, I have a hunch that the water pump is slowly leaking coolant onto the belt, but I need everything to dry up so I can make sure there's no leaks, because I did just replace the radiator and don't know if everything's good yet.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565909 - 11/06/17 01:10 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
SatinSilver Offline


Registered: 01/24/08
Posts: 10342
Loc: OH
How old is the current belt?

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#4565911 - 11/06/17 01:19 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
For the past few months before I replaced the radiator I have been adding Distilled water only waiting to have time to replace the radiator, but I'm guessing the entire time the radiator was leaking the water pump was leaking too, well as soon as I put the new radiator in and filled it with real coolant, the water leaking on the belt now became a coolant mixture, so I think I need to replace the water pump for sure.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565914 - 11/06/17 01:22 PM Re: Diagnosing serpentine belt [Re: SatinSilver]
901Memphis Offline


Registered: 08/14/10
Posts: 12897
Loc: Northern Kentucky
Originally Posted By: SatinSilver
How old is the current belt?


I haven't replaced it in 5 years of ownership
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4565928 - 11/06/17 01:43 PM Re: Diagnosing serpentine belt [Re: 901Memphis]
SatinSilver Offline


Registered: 01/24/08
Posts: 10342
Loc: OH
It could be the original one then unless you have invoices/records that prove otherwise. You can get a decent belt for around $25. Add $40 for labor if you don't install it yourself. Any cracks on either side of it?

edit: This may help as well.

Originally Posted By: Trav
All the major players are good but as critic said its about fit some are not quite on the money. stay away from their second tier offerings like Drive works (Dayco) the quality drops off noticeably.
Bando and Mitsuboshi (not Mitsubishi) are my favorite belts for Asian cars, the Dayco W belt and ACDelco fits German and US cars well, NAPA, Conti and Gates are good belts but the sizing seems to be all over the place.
Kind of a blanket statement but they seem to either fit perfectly or are an absolute bugger to get on or a little loose depending on the make and model.
Just my personal experience.


Edited by SatinSilver (11/06/17 01:52 PM)

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