The Jeep serpentine belt problem is nothing brand-new to Jeep owners. Through that said, the word still hasn"t gotten roughly that girlfriend don"t need to live through a loud serpentine belt on her Jeep product. This particular article addresses one of the biggest offenders once it comes to noisy engine belts.

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That"s right, we’re talking around the 4.0 together six-cylinder engine discovered in Jeep vehicles indigenous 1996 v 2006. Lock dropped this hard engine right into millions of vehicles, consisting of the famous Jeep Cherokee, grand Cherokee and the Jeep Wrangler and Comanche.Here"s an interesting bit of trivia around this engine. The original Jeep straight six designs originate from the 1964 AMC product line. Throughout the years they raised the displacement and also improved strength output. I"ve checked out these engines with an ext than 300,000 mile on them. Through that said, particular years forced a the majority of maintenance and also repairs to make it the far.

This brings us full circle. The 4 liter straight six engines can last a lengthy time, however the Jeep serpentine belt problem can journey you crazy throughout the property cycle. Right here we"ll talk around the three main materials at the root reason of the issue. These encompass the serpentine belt tensioner, the idler pulley and also the serpentine drive belt itself.

Jeep Serpentine Belt Tensioner Problem

The belt tensioner offers a hefty spring to use just the best amount of anxiety to the drive belt. In addition, this component has a sealed bearing pulley. The composite building of this an equipment allows it to fail in plenty of different ways.

The manufacturers regularly use belt tensioner"s make in China through questionable quality. The Chevrolet belt tensioner is no far better than the one they use on the Jeep products.

I have actually personally watched belt noise resulted in by both fail of the sealed bearing pulley and the separation of the tensioner body. That"s right, these single parts are consisted of of four separate components. You have actually the huge spring, the base the mounts come the engine and also the swing eight that attaches come the pulley.


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Belt Tensioner and Bolt

Since any of these materials can failure at any kind of time it"s encourage to resource a complete assembly. Fortunately, with the vast demand for replacement parts, aftermarket service providers offer the instead of tensioner for less than $40.

Even in ~ this cheap price the top quality is usually on par through the one the factory installed ~ above the assembly line. The difficulty with instead of this Jeep serpentine belt tensioner i do not care the method they usage to connect it to the engine block.

Jeep offers a single Torx head bolt v a huge diameter flat head. It"s this one bolt that renders this not the perfect do-it-yourself auto repair. The size of the bolt is a Torx 40. However, the difficulty remains that it fits a little loosened and in many instances it strips out once you try to ago the bolt out.

After doing the repairs numerous times I come up through a trick the reduces the chances of stripping the end the center of the T-40 retaining bolt. While ns am relocating my ratchet counterclockwise, I usage my other hand to run a pair that channel locks clamped onto the external edge in the same direction. When you gain a quarter rotate in the ideal direction you can remove the channel lock pliers.

Since this is among those operations whereby a photo is worth 1,000 words, here’s a attach to a gentleman making use of the same an approach in a YouTube video. In a worst-case scenario, if you should buy a instead of bolt you can acquire them in ~ your regional Jeep dealer. This is the Jeep belt tensioner T 40 bolt part number 6507743AA.

More Jeep Serpentine Belt Problems

Although I check out the fail of the spring-loaded belt tensioner in ~ the root reason of engine journey belt troubles on Jeep products, it"s not the just thing ns see. Much more than as soon as I have discovered a completely destroyed belt. This is almost always caused by a seized idler pulley.In fact, as soon as I gotten rid of the engine journey belt, the an initial thing I execute is spin the idler wheel with mine hand. Plenty of times I find that the idler sheave bearing is in bad condition. In addition, sometimes I deserve to physically relocate the wheel from next to side. This part shouldn"t have any play in it. In other instances I can hear a squeaking sound together it rotates. V the price of a replacement part in the $10 selection it just makes feeling to walk ahead and replace it in ~ the same time together the tensioner.

Recommended replacement Serpentine Belt because that Jeeps

The last point to talk about is the high quality of the rubber serpentine belt. Often automotive parts suppliers will offer a instead of engine journey belt that they will make the most profit on.

Although i don"t want to contact out any kind of individual brands, you have the right to probably guess which one I"m talking about. Once automotive parts companies by rubber replacement belts indigenous China in substantial quantities, they salary very little per unit.

Even if they sell them at a discounted retail price, castle still make a most money every belt. The concern is just how long will certainly this part last and also how noisy will it become during regular operation. I was always a huge fan that the Goodyear Gatorback engine journey belts. You have the right to still find these in many locations.

However, my back-up go to belt is from another tire company. If friend think around it, who is better at offering quality rubber replacement parts than a firm that already has ample rubber supplies.

Therefore, I prefer the continent brand that engine belts for the Jeep 4 liter straight 6 Engine journey belt application. Castle re-branded these serpentine belts as Contech brand parts. Often when a Jeep owner is complaining around a squeaky belt it requirements nothing an ext than switching out the current drive belt with a high quality replacement.

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There"s one an ext issue that have the right to cause major belt noise on this rides. However, it"s most common on Jeep Cherokee and also Grand Cherokee units. The crankshaft sheave starts comes apart after around 10 years and 100,000 miles of use. We filed this Jeep serpentine belt problem article in the miscellaneous vehicle repair troubles section the the fix my old ride.com website. You can head over to the area and also review part other hard to categorize auto repair problems.