RELATED: How to find a Vacuum Leak & How to Fix It (8 Easy Steps) 2. The most common cause for a vacuum leak is a broken hose around the intake manifold, but it could also be caused by a leak around the boost pipes if your car has a turbocharger. If there is a vacuum leak in the intake manifold, it can create a whining sound when you accelerate, especially if your car’s engine is equipped with a turbocharger, which will expel the air from the leak. RELATED: 7 Symptoms of a Bad Serpentine Belt (& Replacement Cost) 3. Once it breaks, you will be stuck until the repair can be made. If you notice the belt is failing, you want to replace it before it gives out completely. When this happens, the belt can’t grip the pulleys, and it begins to slip. Serpentine belts are known to crack and dry out over time. For this reason, if there’s a failure, you might notice the whining sound is louder. As you accelerate the car, the serpentine belt tries to run at a faster speed to keep up. The serpentine belt is responsible for driving numerous components of the vehicle. In extreme cases, the whining could indicate that there’s a larger problem with the transmission that needs attention. It could also be due to a power steering issue, worn bearing or low engine oil. This whining noise can be caused by a bad serpentine belt, a boost leak or a vacuum leak. that might be due to a worn belt, not a faulty component! If your Vibe is one of those Pontiacs that shrieks horrendously when it runs, you likely have a worn belt, bad tensioner or both.How long will a whining alternator last? Causes of Whining Noise When Accelerating As such, you may experience a dead battery, difficulty steering, overheating, etc. Not all vehicles have a timing belt (they typically have a timing chain instead), whereas all modern vehicles have a serpentine belt. Since the timing belt is deeper in the engine, it is often much more expensive to replace than the serpentine belt. The timing belt will often drive the water pump too. Serpentine belt vs timing belt? The timing belt connects the crankshaft to the camshaft, thus making sure the pistons and valves are operating in the correct sequence. The serpentine belt in your Vibe connects your engine to many of the components you use every day such as your air conditioner, battery (via the alternator), power steering and cooling system - a quick look at the serpentine belt diagram outline all of the components feeding from it. Check out our parts page for coupons on new belts for your Vibe! Most vehicles do not need a special serpentine belt tool, but rather a 1/2" breaker bar and a socket on the serpentine belt tensioner to relieve the tension from the belt. Depending on your engine, the serpentine belt replacement cost is between $100 and $200. Worn serpentine belt noise in a Vibe can indicate impending problems if ignored, while typically being fairly cheap and easy to replace. The video above shows how to check the serpentine belt on your 2009 Pontiac Vibe - if it gives more than a half inch when pressed, is cracked, frayed or appears shiny, you should change it (or have it changed) immediately.
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