Question about 1997 Subaru Impreza

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Ive been told my serpentine belt needs to be replaced (it has noticeable cracks) how dangerous is this and what happens if it fails while driving?

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Cracks are ok and don't affect the belt performance, the only time you replace the belt is when chunks of the rubber ribs are missing, this is from a factory bulletin about when to replace the belt, it is my opinion though based on 30 years of field experience that the belt should be replace every 60,000 miles.

Posted on Nov 16, 2009


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I have a 2002 ford taurus and my serpentine belt keep breaking; afterwards I notice some smoke coming from that area and my serpentine belt felt hot to touch, can someone please explain to me why that...

something that the belt is driving is failing and putting extra load on the belt and it is slipping as it tries to drive that item. It may also be not tensioned properly. Remove the belt and turn each item by hand and they should all turn freely. The ac compressor will need the clutch to be activated but you will still be able to turn it by hand. Replace any that are stiff to turn

Jul 14, 2014 | Cars & Trucks

2 Answers

What is the average life of a serpentine belt?

It varies from vehicle to vehicle but you could ask the dealer---my view has always been to keep an eye on the belt for cracks or fraying anywhere---they are not that hard to replace and while costs will vary (on mine found a OEM one new for 26 dollars and same belt at local parts place was 52---same brand and part number.

It is better to replace it and have the tension unit that tightens most of these inspected than have it go when you are driving down the road.

In my case I keep the old belt rolled up and stowed in the vehicle in case the new one fails.

Dec 05, 2012 | 2004 Pontiac Vibe

1 Answer

Serpentine belt

With A/C


Accessory Drive Belts


Accessory Belt Routing

0996b43f802319a9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Accessory serpentine belt routing-3.5L engine

0996b43f802319a9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Accessory serpentine belt routing-3.5L engine

0996b43f8020700d.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Accessory serpentine belt (A) routing-3.8L engine


Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Removal & Installation

  1. Disconnect the negative battery cable.
  2. Rotate the auto tensioner clockwise to release tension, then remove the drive belt.

To install:
  1. Install drive belt (A). Route the belt over the components in the following order: Crankshaft pulley - A/C pulley - idler pulley - generator pulley - water pump pulley - P/S pump pulley - tensioner pulley.
  2. Rotate auto tensioner arm in the counter-clockwise moving auto tensioner pulley bolt with wrench.
  3. After putting belt on auto tensioner pulley, release the auto tensioner pulley slowly.

    0996b43f802319a9.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Accessory serpentine belt routing-3.5L engine

    0996b43f8020700d.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Accessory serpentine belt (A) routing-3.8L engine

May 09, 2012 | 2006 Kia Sedona 3.8

1 Answer

Its a 2006 nissan sentra 1.8 i want to know when the squealing happens. I was told the pulley and the turpentine and a/c belts must be replaced.

They may very well need be replaced. Can't say for sure because I can't see it. Look at the belts for any cracks. Serpentine belts has a spring loaded tensioner. There may be a limit gauge on the tensioner that would show when the belt is stretched to its recommended limits. Pulley bearings can go bad and make noise. Plastic pulleys do wear out.

Sep 04, 2011 | 2005 Nissan Sentra

2 Answers

How do you know your serpentine belt on a 2006 nissan altima is going out

Serpentine belts should be replaced every 60k miles. You do not want it breaking while driving down the road. To inspect the belt look at the grooved side of the belt. If you see cracks in the rubber then I would replace it.

Sep 23, 2010 | 2006 Nissan Altima

1 Answer

Serpentine belt has some cracks

any cracked belt should be replaced. the timing belt drives the cam shaft while the serpentine drives the power steering pump, alternator, water pump, air conditioner compressor, etc. if it breaks in the middle of nowhere, car will get hot real fast and become very hard to steer as you try and find somewhere to pull over. it will also be in the night and adverse weather. so replace it now when it is convenient.

Apr 01, 2010 | 1997 Ford Escort

2 Answers

I am being told our serpentine belt needs to be replaced. How many miles do they normally last?

depends upon weather, driving conditions, engine options, but the bottom line is the belt will eventually dry out, crack or start peeling (fraying) which should be visible to the naked eye. Also look for oil on belt which can make it slip.There is also an indicator (3 notches looking down from top) which indicates belt wear/stretch. replace belt if outside of indicators.

Mar 12, 2010 | 2005 Nissan Altima

1 Answer

Sepentine belt popped off

sounds like the serpentine belt has failed and needs replacement. the belt tensioner may have failed as well but you'll need to check that. as far as totalling the motor... that depends how hot it got and for how long. best bet is to replace the belt and start it up (after checking all the fluid levels) and see how it runs.


May 27, 2009 | 2000 BMW 3 Series

1 Answer

Serpentine Belt Replacement

serpentine belts should be replaced when cracks are running across"v" portions of belt,when missing ribs 1/2 " or longer,or cracks running parallel to "v" portion of belt. the thermostat should be replaced if the car seems to take a long time to warm up or if the engine runs hot

May 05, 2009 | 2006 Cadillac DTS

1 Answer

Serpentine belt

If you're on the highway when the belt lets go, you may not even notice it. If you're in town, the the first thing you will notice is it's hard to steer.

A serpentine belt powers all your vehicles secondary systems, when the belt fails they fail, simultaneously.

What exacty happens when a serpentine belt fails:
  1. Power steering pump is no longer spinning, steering becomes difficult. This is the first noticeable symptom.
  2. Water pump no longer spinning, water no longer circulates, your engine begins to overheat. It doesn't matter if the fan is electric or not. Symptoms are slower to present themselves.
  3. Alternator no longer spinning. The engine continues to run by drawing power from the battery. If this happens at night, you will notice the headlights getting gradually dimmer. An idiot light on the dash (ALT) will light up.
  4. The engine finally overheats, you pull over and shut the engine down. Steam is shooting from the radiator reservoir. There may be damage to the engine. You wait over an hour for it to cool enough to open the cap. You notice the belt is gone.
  5. You put some more water in it. You try to start it up to get to a repair shop, only to discover your battery has been completely drained. You aren't going anywhere.
So the potential consequences are possible severe engine damage (warped heads, etc), battery replacement, stranding in the middle of nowhere, possible accident if the steering cuts mid-turn in traffic.

I hope that answered your question.

If you have trouble putting a new belt on, click here. The procedure is straightforward.

If you have additional questions, click on my name to get my profile, then click Askme.

Good luck

Jun 22, 2008 | 2008 Mercedes-Benz Mercedes Benz C Class

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