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#2503190 - 01/23/12 12:41 PM How long do you run a serpentine belt?
Doog Offline


Registered: 10/24/11
Posts: 5134
Loc: North Coast
60,000? 70? 80? 100? I have always changed them at about 60k. Am I wasting money?
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#2503195 - 01/23/12 12:45 PM Re: How long do you run a serpentine belt? [Re: Doog]
Burt Offline


Registered: 01/08/09
Posts: 1222
Loc: texas
Probably can safely go 70k, but much depends on how many years? I think 6 years is a good max.
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#2503196 - 01/23/12 12:45 PM Re: How long do you run a serpentine belt? [Re: Doog]
dave1251 Offline


Registered: 07/15/05
Posts: 7828
Loc: Maricopa, AZ
I would look at it as preventive maintenance not a waste. I change mine about every 5 years. Not dependent on mileage.
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#2503206 - 01/23/12 12:59 PM Re: How long do you run a serpentine belt? [Re: Doog]
SHOZ Offline


Registered: 06/28/03
Posts: 3064
Loc: Illinois
They say until the ribs start chunking out.
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#2503212 - 01/23/12 01:07 PM Re: How long do you run a serpentine belt? [Re: Doog]
Quest Offline


Registered: 12/19/04
Posts: 7354
Loc: beaver land EH?
until the ribs starts to show signs of wear, belt rubber becomes glazed and or that nasty "rushing" sound.

This will typically be good for 6~9yrs in our area; dependent to operational conditions and or brand/rubber compound.

Continental (VW /Audi OEM) and Gates will lats 9yrs; IMHO cheeper DAyco and/or Goodyear typically lasts 3~6yrs. Some Korean stuff would lasts somewhere in between the 2 grades.

Q.
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#2503216 - 01/23/12 01:12 PM Re: How long do you run a serpentine belt? [Re: Doog]
eljefino Offline


Registered: 06/15/03
Posts: 28651
Loc: ME
Till it squeals or throws chunks.

I figure it's *good* for the tensioner to have a seasoned belt, so its spring isn't held as tightly as it would be with a new belt.

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#2503222 - 01/23/12 01:15 PM Re: How long do you run a serpentine belt? [Re: Doog]
HerrStig Offline


Registered: 08/24/11
Posts: 6989
Loc: Boston, MA
Proper alignment of pullys and regular checking of belt tension help a belt last a long time. Miles driven and and underhood conditions have an effect. The last Toyota belt I replaced did show signs of tooth chunking at about 200K.

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#2503223 - 01/23/12 01:15 PM Re: How long do you run a serpentine belt? [Re: Doog]
nfs480 Offline


Registered: 04/10/09
Posts: 549
Loc: Minnesota
I typically just inspect the belt every oil change and when cracks start showing I replace it. I believe commonly within the industry it's recommended whenever there are more than 3 cracks per inch of belt.
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#2503229 - 01/23/12 01:18 PM Re: How long do you run a serpentine belt? [Re: Doog]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Interesting you mention it. My oriellys is giving out free belt checker tool. If it goes into the grooves its bad if it sits on top its good. New belt apparently don't crack like the old ones did. I usually replace mine when I see a reason to. smile
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#2503230 - 01/23/12 01:19 PM Re: How long do you run a serpentine belt? [Re: Doog]
eljefino Offline


Registered: 06/15/03
Posts: 28651
Loc: ME
Cracks are part of what helps it flex "inside out". Have seen them go with many more cracks per inch.

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#2503237 - 01/23/12 01:27 PM Re: How long do you run a serpentine belt? [Re: Doog]
440Magnum Offline


Registered: 02/01/09
Posts: 7707
Loc: Texas
"A long dang time." I'd say 60k miles/5 years is pretty safe without wasting money.

I sure don't miss V-belts. Yes, its kinda neat to see my old Mopars with 4 different belts spinning the various accessories, but what a hassle compared to a single serpentine. Carry one spare belt and the tool(s) to change it, and you're good to go.

The only downside is that something as trivial as a seized tensioner or one seized accessory can stop you dead if the belt turns the water pump. Otherwise you can limp in without an alternator or P/S.
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#2503238 - 01/23/12 01:28 PM Re: How long do you run a serpentine belt? [Re: eljefino]
tpattgeek Offline


Registered: 05/18/10
Posts: 325
Loc: Louisiana
What about just an OEM belt? That way you know it's at least same or better quality as original, right? Or are they way more expensive? Seems like $30 or so is cheap insurance for a broken belt...
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#2503248 - 01/23/12 01:37 PM Re: How long do you run a serpentine belt? [Re: Doog]
Artem Offline


Registered: 10/30/10
Posts: 4528
Loc: Florida
The OEM belt on my 2007 Civic has 130,000 on it and still looks serviceable for continued use.

I've been monitoring it since 100k which is the recommended change interval. I even bought the replacement belt which has now been sitting in the garage for close to a year. Lol.

I'll keep running it until it starts to really show signs of degrading. I figure that would be in the next 20k or so. I'll replace it @ 150,000 with the OEM belt and forget about it for another 150,000

I don't think one should follow a set interval. It's a rubber belt and degraded differently based on belt quality and weather conditions.
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#2503249 - 01/23/12 01:37 PM Re: How long do you run a serpentine belt? [Re: tpattgeek]
Rand Offline


Registered: 08/20/03
Posts: 9784
Loc: NE,Ohio
2002 ranger 4.0 I had a quote for 129$ for the belt at the dealer.

Still looked fine.. went to AZ.. they gave me the wrong belt
(listed same belt for 3.0 and 4.0 3.0 = 3" longer)

Special ordered a gatorback for 32$ from... federal? I think.

I replaced it because it was 5yr old and was squeaking bad.. also did an idler pulley but the new one was horrid junk so I returned it and replaced the pulley bearing instead.
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#2503282 - 01/23/12 02:07 PM Re: How long do you run a serpentine belt? [Re: Artem]
tpattgeek Offline


Registered: 05/18/10
Posts: 325
Loc: Louisiana
Originally Posted By: Artem
The OEM belt on my 2007 Civic has 130,000 on it and still looks serviceable for continued use.


I think that's why time is more of a factor than miles. My 07 with 60k miles probably looks the same as yours with 130k miles. We can both change them at 6 years, smile
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