The Jeep serpentine belt trouble is nothing new to Jeep owners. With that said, words still hasn"t gotten about that you don"t need to live through a loud serpentine belt on her Jeep product. This certain article addresses among the best offenders once it concerns noisy engine belts.

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That"s right, we’re talking about the 4.0 together six-cylinder engine found in Jeep vehicles from 1996 v 2006. They dropped this heavy engine into millions that vehicles, including the popular Jeep Cherokee, grand Cherokee and the Jeep Wrangler and also Comanche.Here"s an exciting bit the trivia around this engine. The original Jeep straight six designs originate indigenous the 1964 AMC product line. Throughout the year they increased the displacement and also improved strength output. I"ve watched these engines with much more than 300,000 miles on them. Through that said, particular years required a many maintenance and repairs to make it the far.

This bring us full circle. The 4 liter straight six engines have the right to last a lengthy time, but the Jeep serpentine belt problem can drive you crazy transparent the property cycle. Right here we"ll talk around the 3 main materials at the root reason of the issue. These encompass the serpentine belt tensioner, the idler pulley and the serpentine drive belt itself.

Jeep Serpentine Belt Tensioner Problem

The belt tensioner uses a heavy spring to apply just the ideal amount of anxiety to the drive belt. In addition, this part has a sealed bearing pulley. The composite building of this device allows it come fail in countless different ways.

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

I have actually personally seen belt noise caused by both failure of the sealed bearing pulley and the separation that the tensioner body. That"s right, these solitary parts are comprised of four separate components. You have actually the huge spring, the base the mounts to the engine and the swing eight that attaches to the pulley.

Belt Tensioner and also Bolt

Since any type of of these materials can fail at any time it"s encourage to resource a complete assembly. Fortunately, v the large demand for replacement parts, aftermarket suppliers offer the instead of tensioner for less than $40.

Even at this cheap price the top quality is normally on par with the one the manufacturing facility installed on the assembly line. The trouble with replacing this Jeep serpentine belt tensioner i do not care the an approach they usage to attach it come the engine block.

Jeep provides a single Torx head bolt v a large diameter flat head. It"s this one bolt that provides this no the perfect do-it-yourself auto repair. The dimension of the bolt is a Torx 40. However, the difficulty remains the it fits a little loose and in many instances it strips out as soon as you shot to ago the bolt out.

After act the repairs number of times I came up v a trick the reduces the chances of stripping out the facility of the T-40 retaining bolt. While i am moving my ratchet counterclockwise, I usage my various other hand to run a pair that channel locks clamped onto the external edge in the exact same direction. As soon as you acquire a quarter turn in the ideal direction you have the right to remove the channel lock pliers.

Since this is one of those operations where a photo is worth 1,000 words, this is a attach to a gentleman making use of the same technique in a YouTube video. In a worst-case scenario, if you must buy a instead of bolt girlfriend can gain them in ~ your local Jeep dealer. Here’s the Jeep belt tensioner T 40 bolt component number 6507743AA.

More Jeep Serpentine Belt Problems

Although I watch the fail of the spring-loaded belt tensioner in ~ the root reason of engine drive belt difficulties on Jeep products, it"s no the just thing ns see. More than once I have discovered a fully destroyed belt. This is virtually always caused by a seized idler pulley.In fact, when I eliminated the engine journey belt, the an initial thing I do is turn the idler sheave with my hand. Countless times I uncover that the idler pulley bearing is in negative condition. In addition, occasionally I can physically relocate the wheel from next to side. This part shouldn"t have any type of play in it. In other instances I have the right to hear a squeaking sound as it rotates. With the expense of a replacement component in the $10 selection it only makes sense to walk ahead and replace it in ~ the very same time as the tensioner.

Recommended instead of Serpentine Belt because that Jeeps

The last point to talk around is the quality of the rubber serpentine belt. Often automotive components suppliers will offer a replacement engine drive belt the 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 i m sorry one I"m talking about. As soon as automotive parts companies by rubber instead of belts from China in massive quantities, they salary very small per unit.

Even if they offer them at a discounted sleeve price, castle still do a many money per belt. The inquiry is how long will certainly this part last and also how noisy will certainly it become during continual operation. I was always a big fan the the Goodyear Gatorback engine journey belts. You deserve to still uncover these in countless locations.

However, my backup go come belt is from one more tire company. If girlfriend think about it, that is far better at offering quality rubber replacement components than a agency that already has ample rubber supplies.

Therefore, I choose the continent brand that engine belts for the Jeep 4 liter right 6 Engine journey belt application. They re-branded these serpentine belts together Contech brand parts. Often when a Jeep owner is complaining about a squeaky belt it requirements nothing an ext than switching the end the existing drive belt with a high quality replacement.

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There"s one much more issue that can cause major belt noise on these rides. However, it"s most common on Jeep Cherokee and Grand Cherokee units. The crankshaft pulley-block starts comes apart after around 10 years and also 100,000 mile of use. We filed this Jeep serpentine belt problem article in the miscellaneous automobile repair troubles section that the deal with my old website. You deserve to head end to that area and review some other tough to categorize auto fix problems.