Jeep Wrangler owners have reported 3 problems related to timing tensioner (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Jeep Wrangler based on all problems reported for the Wrangler.
For the third time in six months, our 2020 wrangle unlimited has been at the dealer to attempt to fix a significant chirping sound coming from the serpentine area. They have already replaced the tensioner pulley twice and it's actually worse. So far, for the six months we've had it, we'll be going on 3 weeks in the shop. Initially it would only be on a cold start but now it's louder and we can't take it anywhere. The dealer has had all the tech look into it and they still believe it's related to the tensioner. It's not related to the recent tensioner recall either. This is a lemon and needs to be replaced.
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2012 Jeep sahara. Consumer writes in regards to tensioner arm and serpentine belt failure. The consumer stated the vehicle lost its steering. The tensioner arm seized shredding the serpentine belt which lodged into the engine. The consumer requested to reimbursed for the repairs. Updated 09/25/2017.
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Many major mechanical issues for this vehicle 1) 6th cylinder head on the new penstar engine needed to be replaced 2) wind air leak causing whistling in the cabin 3) serpentine belt shredded and cracked 4) belt tensioner was binding and needed to be replaced 5) major vibrations- intake and exhaust phasers shorted 6) motor mounts worn 7) vibration got worse motor mounts trans and exhaust had to be remounted.