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Serpentine Belt - When To Change? #5050041 03/21/19 02:08 PM
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Propflux01 Offline OP
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About what mileage do you change your serpentine belt out? They seem to last much longer than belts of yesteryear, but I am PM anal-retentive. Car is almost at 100k.


2014 Hyundai Elantra
2014 Hyundai Elantra GT

A 55 Gallon Drum And A Shovel Can Solve A lot of Life's Little "Problems"
Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050051 03/21/19 02:18 PM
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Dave Sherman Offline
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I've done them at 100,000. If it's not glazed, missing chunks out of the ribs, or badly cracking along the ribbed side, then it's probably in decent shape. Some vehicles have an indicator on the tensioner that shows how much the belt has stretched and use that as a guideline of when to replace it. Don't know if your Elantra has a timing belt (my Pilot does), but it would have to come off to do the TB anyway.


2015 Honda Pilot EX AWD Valvoline 0W-20 Bosch filter
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Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050058 03/21/19 02:28 PM
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FA_WRX Offline
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I think the belt companies used to reccomend every four years. I agree with the above if it appears in good condition not tore or missing pieces. I'd run it longer.


2015 WRX FA20F
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Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050063 03/21/19 02:33 PM
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Ihatetochangeoil Offline
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Change it when you feel like it....Don't throw the old one away...I keep mine in the trunk...Just because I can sleep better with a spare WITH me...I can change it in 5 minutes, and a worn one is better than a broken one in the middle of nowhere...

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050072 03/21/19 02:43 PM
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slacktide_bitog Offline
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Change it when it gets noisy, or when replacing something driven by it such as the alternator.

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050075 03/21/19 02:43 PM
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spk2000 Offline
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Yep change them whenever you like and if older carry a spare knowing you might be in less than ideal conditions rain, snow, highway, rough neighborhood....
My 2001 sable with over 160,000 miles still has original serpentine belt but I have a spare in the car. It also has a very small water pump belt that went bad over Christmas break. Broke on me in cold weather on highway but made it to the nearest gas station. Light sleet going on was on our way to Orlando and wanted to change it before the trip knowing it was at risk.


96 Grand Marquis 203,000 mi
01 Sable LS Wagon 163,000 mi
02 Montero 191,000 mi
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Re: Serpentine Belt - When To Change? [Re: Ihatetochangeoil] #5050086 03/21/19 02:54 PM
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WobblyElvis Offline
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Originally Posted by Ihatetochangeoil
Change it when you feel like it....Don't throw the old one away...I keep mine in the trunk...Just because I can sleep better with a spare WITH me...I can change it in 5 minutes, and a worn one is better than a broken one in the middle of nowhere...


This is good advice.

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050087 03/21/19 02:54 PM
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CT8 Offline
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Change it . belts aren't that expensive and you are thinking about it.

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050089 03/21/19 02:57 PM
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69GTX Offline
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My last car with 83K miles had very tight access to the serpentine belt requiring removing a front wheel and jacking the engine up 1" or so. In my case a power steering fitting was leaking on to the belt and causing it to slowly give up little chards of rubber. It was living on borrowed time with the edges frayed and slick spots in the centers. I was carrying a brand new replacement by that time. But for 16 yrs old that belt was doing pretty darn good. Fortunately, the car was sold and I replaced it with a 2001 with a much cleaner engine bay and nearly mint looking serpentine belt. I have no intention of doing anything with that for years to come. My 1999 Camaro with 19K miles has a mint original belt as well. No designs on messing with that either. If the belts aren't stretched, frayed, blowing chunks, or cracking....it's probably good to go regardless of age.

Last edited by 69GTX; 03/21/19 02:58 PM.

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2001 Lincoln Cont 4.6L DOHC/ 50K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050092 03/21/19 02:59 PM
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nthach Offline
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I change it when the timing belt/water pump is due for service of if the belt is cracked excessively.

I dunno about other automakers, Toyota's V8s(maybe their V6s) did have a belt stretch table on the serpentine belt tensioner. If the tensioner is on the lower end(area A), the belt is good and if it's in the higher end of the table(area B), time for a new one.

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050104 03/21/19 03:07 PM
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SnowDrifter Offline
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I inspect and go from there

Check for cracks, separation, noise, glazing, and groove depth - if you can see the belt's backing from the groove it's worn out


2005 Tahoe - 140k
2003 Forester(the swagger wagon) - Rehomed
1999 Passat - Rehomed
Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050129 03/21/19 03:38 PM
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GZRider Offline
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I change serpentine belts every 6 years or 75k miles at minimum, it's not an expensive part but alternators and power steering pumps typically are. One imagines the belt suddenly snapping while the accessory components are under load is not going to do good things for their service life.

Re: Serpentine Belt - When To Change? [Re: GZRider] #5050138 03/21/19 03:49 PM
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SnowDrifter Offline
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Originally Posted by GZRider
I change serpentine belts every 6 years or 75k miles at minimum, it's not an expensive part but alternators and power steering pumps typically are. One imagines the belt suddenly snapping while the accessory components are under load is not going to do good things for their service life.

As a matter of fact, it would do nothing to them. If you have a serp belt driven water pump on the other hand... Your engine might not appreciate it


2005 Tahoe - 140k
2003 Forester(the swagger wagon) - Rehomed
1999 Passat - Rehomed
Re: Serpentine Belt - When To Change? [Re: SnowDrifter] #5050166 03/21/19 04:22 PM
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hallstevenson Offline
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Originally Posted by SnowDrifter
Originally Posted by GZRider
I change serpentine belts every 6 years or 75k miles at minimum, it's not an expensive part but alternators and power steering pumps typically are. One imagines the belt suddenly snapping while the accessory components are under load is not going to do good things for their service life.

As a matter of fact, it would do nothing to them.

I was thinking the same thing. I can't imagine how it could hurt anything. They would just coast down to zero RPMs.

Re: Serpentine Belt - When To Change? [Re: Propflux01] #5050169 03/21/19 04:23 PM
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hallstevenson Offline
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The service schedule for my '08 G35 has a "special premium schedule that says replace the belt every 30k miles. For regular schedules 1 and 2, they say "inspect" it and give no change interval. Sadly, on some Infiniti forums, people preach "change the serpentine belt every 30k miles ! Infiniti says you have to !".

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