![]() ![]() All you need to do is look for serpentine belt routing diagrams online. You don’t really need to go to your automotive shop and spend money for it. Here’s a positive note about these diagrams: You can get them for free. Where to Get Free Serpentine Belt Diagrams This basically enables a person, even without being a mechanic, the ability to do a serpentine belt replacement and keep your car going. It gives you a comprehensive view as to where the pulleys are situated and how the belt should be routed over them. These diagrams will show you exactly where your belt fits in relative to the aforementioned parts. This is where serpentine belt diagrams come in. And just like a motherboard, it would seem kind of impossible to fix on your own due to its complexity. ![]() Without it, it is impossible to operate the engine components installed in your car such as the air-conditioning unit, water pump, steering pump, alternator, and so on. What Are Serpentine Belt Diagrams?Ī serpentine belt is like a computer motherboard. In these cases a serpentine belt diagrams would certainly come in handy. Just so you know that is actually a serpentine belt. The next thing you do is check the hood of your car at home, seeing a rubberized belt cut into half. What a nice experience indeed until you hear a thumping sound, realizing that your car’s air-conditioner is no longer working. Another way is to draw a routing diagram before removing the old belt.So, it’s a sunny day and you’re having the time of your life driving on the road with the music turned up. For some cars, the routing is shown in the owner's manual. To replace a serpentine belt, you will need a belt diagram that shows the routing. On the scale from 1 (easy) to 10 (leave it to pros) the serpentine belt replacement can be rated from 3 to 7 depending on the car. How easy is it to replace a serpentine belt DIY? Replacing a serpentine belt costs $18-$75 part plus $50-$150 labor. It's also a good idea to replace an old serpentine belt before a long road trip. If your car has two belts, we recommend replacing both at the same time, because you are saving on labor. A serpentine belt must also be replaced if it is found to be soaked in oil or stretched. In most cases, it's easy to see when the belt is worn out. ![]() When you take your car for a regular oil change service, a mechanic will look for cracks (see the photo), splits, damaged edges, missing chunks, glazing and other signs of wear. This serpentine belt shows cracks, it needs to be replaced When a serpentine belt needs to be replaced Replacing an A/C compressor or alternator could cost from $450 to $850. If it's just an idler, it's not very expensive: $15-$35 for the part plus $60-$170 labor. The repair will depend on what part is bad. A mechanic might have to remove a belt and check the devices that are run by a belt one by one. A bad bearing inside the alternator, A/C compressor or power steering pump produces the same type of noise. Mechanics use a special stethoscope to look for the source of noise. Because several belt-driven devices can make a similar noise, this one might take some time to diagnose. When that bearing goes bad, it can produce a whining/whirring or screeching noise. To route a serpentine belt, many cars use free-spinning pulleys like the one in the photo. The fix, in this case, was to replace the belt and worn-out alternator bolts to align the alternator.Ī failed bearing in one of the idler pulleys like this one is another common source of the noise.ħ. If you look closer in the photo, you can see rubber shavings in the area between the belt and the alternator. This caused the alternator pulley to be misaligned with the belt, so the belt was squealing and wearing out faster. Upon closer inspection, we found that the alternator was loose and shifted under angle. For example, in this car, in the photo, an alternator and a belt have been replaced while on a trip, a few weeks ago. Sometimes, you can visually see when one of the pulleys is not lined up. One of the symptoms of this problem is increased wear on one side of the belt. Often this problem is discovered after a newly replaced belt still squeals or wears out fast. If any of the belt-driven devices or a tensioner pulley for some reason is not lined up with the belt, the belt will squeal. A serpentine belt runs on several pulleys. This caused the belt to squeal and wear faster.Ħ. The alternator in this photo is not lined up with the belt and other pulleys. Signs of automatic transmission problems.How to check the engine when buying a used car.How to get the best deal on a used car?.Buying a Used Car: 10 Common Mistakes to Avoid. ![]()
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