If there are any cracks, you have a dried belt that can snap anytime. It’s also a good idea to pop the hood and visually inspect your old belt for cracks.
The temperature coming from the engine can also make a belt dry.Īll these reasons result in a weaker serpentine belt that can no longer maintain the required tension needed to grip each tensioner pulley properly, linking the belt together.Īdditionally, if any pulley begins to slip, the serpentine belt will slip too, producing that annoying squealing sound. That squealing sound can arise due to the constant friction due to motion. If you don’t, you’ll have a broken serpentine or fan belt in the most unpredictable moments.Ī serpentine belt noise can also come from a fan belt that has started to dry out. However, you should get your old belt replaced with a new belt after around 75,000 miles. The good news is new car models come with durable belts (engine belt, alternator belt, timing belt, etc.) that last longer. With time a serpentine drive belt will go bad, like most car parts. If you keep hearing that high pitch squealing whenever you start up your engine, there can be different causes for it. If you detect something, get it checked immediately as the serpentine belt directly influences vital engine components like your alternator and power steering. Note : A bad serpentine belt alone won’t set off any dashboard lights, so it’s important to be alert for any failings in your car’s system. So if you try to crank the cold air, but no cold air comes out, that’s a bad drive belt issue. And lastly, your air conditioning won’t operate if there’s a serpentine belt issue.
This will make it harder to turn your power steering wheel, and you’ll notice it immediately. If a lack of power steering accompanies your squealing belt, that’s another confirmation that the squealing noise comes from a serpentine belt.Therefore overheating and a failing water pump could be a sign of a failing belt. You can see other systems starting to struggle, like the alternator, water pump, power steering pump, etc.įor example, if your engine overheats often and makes a rattling or squeaking noise, your water pump is failing (powered by a serpentine belt).The squeaky belt noise can become even louder or more aggressive if you accelerate suddenly or try to make a U-Turn. If yes, then the squeal you hear is from your serpentine belt or drive belt. Check if the squeaking noise is persistent when you turn on your car, and it feels like it’s coming from the front of your vehicle (under the hood or from the engine bay).To easily identify a serpentine belt noise, keep an eye out for these signs: One more thing, it's obviously had a flat battery, so the clock, and all the windows/sunroof will need calibration.There can be quite a few reasons why you hear a squealing noise when you drive. Oh and when starting a FL2, it's a good idea to let the system check complete, before allowing the engine to crank over, as lots of errors occur on the data stream due to low voltage, if cranking as allowed while the system check is in progress. The throttle body gears can strip, making noises.Īt that miles, I suspect it's the valves being worn, but the top of the head needs to come off to look. The belt idler can also give trouble, especially if it wasn't replaced with the belt. The timing belt tensioner can make noise, if its not been installed correctly. The timing belt can be fraying, especially is its well overdue, which it shouldn't be yet. The drive belt tensioner or idler bearing can fail. The alternator overrun bearing can seize, causing excessive drive belt vibration. Mine were very worn at ½ this ones mileage. Rockers are know to wear, allowing them to "float" on the retaining clips. At this sort of miles, the engine is into its late middle age, (they can last up to around 300k), so just like us, some age related wear is to be expected. The tapping could be several things, especially with 216k miles on it. The rear wheel arches need some rust treatment soon, don't wait too long as they'll be in holes in no time. I'd have preferred Tonga Green instead of my Rimini Red FL2.
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