When you first start your vehicle, the serpentine belt may make a loud and long whining sound before going relatively quiet. Your Patriot’s serpentine belt turns all of the engine accessories. Here are the most likely causes of a vehicle whining when starting: 1. Whining when starting can be frustrating to diagnose since you constantly have to start and restart your Jeep Patriot to duplicate the conditions that caused the sound to begin with. Here’s how to diagnose a squeaky serpentine belt: ChrisFix(YouTube), Serpentine Belt Diagnosis (this site). It would be obvious when looking at the issue. A bent or wobbling pulley can cause the serpentine belt to make noise. The whining noise almost comes across as a chip or chirp. This is particularly true when you first start the vehicle. When it goes bad, it’ll cause a high-pitched whine or squeak. Your Patriot’s serpentine belt is responsible for taking the motion from the crankshaft and turning all of your accessories. Worn Serpentine Belt Chirping serpentine belt. The sound could almost be described as “barking.” It’ll be deeper than the sound of a worn serpentine belt sounds. When your Jeep Patriot’s water pump goes bad, it’ll make a squeaking sound. Only the power steering pump will change with RPM or the steering wheel. All of your engine accessories will change their wine depending upon the RPM. Does the sound get louder while turning your Patriot’s steering wheel? That’s a great indication that it is probably the power steering pump making noise. To determine if it is the power steering pump, turn the wheel left and right with the vehicle sitting. The whining sound should change when you turn your vehicle’s steering wheel or rev the engine. Check the fluid level and fill it back up to the factory fill line. If it gets too low on fluid, it’ll whine a lot. The power steering pump is a common reason your Jeep Patriot might whine when accelerating. Power Steering Pump A failing power steering pump Unplugging the alternator from the wiring harness should stop the noise. This humming sound will change with the engine’s RPM. It may also be accompanied by the battery light, depending on whether or not it is putting out the proper voltage.Ī failing alternator can also make your vehicle’s stereo hum while driving. If your Jeep Patriot’s alternator is going bad, it’ll often begin to put out a high-pitched whining sound. Here are the most common causes of whining noises when accelerating: 1. Jeep Patriot Whining Noise When AcceleratingĪ whining sound when accelerating is almost always caused by a bad accessory attached to your Patriot’s engine. Click the links to go straight to that part of the article. There is a sound clip for most of these conditions. Usually only happens when your Patriot is in gear. Should stop a few seconds after cranking the vehicle over Knowing where and when the noise happens can make quick work of diagnosing a whining noise coming from the Jeep Patriot. However, if it stays constant as you rev the engine, it will be something else. Is the whining noise constant when you rev your vehicle’s engine? Or does it not change with engine speed? If it changes when revving your Patriot’s engine, the cause of the whining sound will most likely be an accessory bolted to the engine. With that in mind, this page is divided by when you hear the whining noise and common causes under those conditions. I'm not saying "don't do it", I'm saying be damn careful if you do.If your Jeep Patriot is experiencing a whining noise, determining where and when the noise is happening is coming from is key to diagnosing and tracking down the cause. So far, at 190k miles, 60k fluid/filter changes is all it has required. No one but a Ford dealer tech that is trained to work on that transmission services it. We also have a CVT (Ford Five Hundred AWD). This is not hearsay or "a friend of a friend.", happened to a coworker whose desk was 20 ft. To the credit of the quick service place, they footed the bill for a new replacement by the dealer, to the tune of just shy of $6k. Local Chrysler/Jeep dealer service department confirmed the CVT was trashed. So they performed the service.ġ8 miles later, he was sitting on the side of the road with a Jeep Compass that would not move in forward or reverse. Yes, they understood it was a CVT yes, they had the correct fluid yes, they had done these before. He took it to a local shop (quick service type place) and asked all the right questions. A co-worker had a Jeep Compass w/CVT that was coming up on 60k service.
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