Belts

Asked by Marqus03SVT Apr 25, 2016 at 08:05 PM about the 2003 Ford Mustang Cobra 10th Anniversary Supercharged Coupe RWD

Question type: Maintenance & Repair

I just installed a new harmonic balancer for my 2003 SVT
cobra and the belt keeps popping off can someone send
me a picture of the harmonic balancer that belongs on the
car? And give me some ideas on what it could be?

2 Answers
42,415

Auto_Centric answered 8 years ago

Why did it need the harmonic balanced replaced? You don't mention when it comes off idling or underload? If there were no issues with the serpentine derailing before the New balancer was installed.. I suggest you check it first, having a belt derail from alignment is a common issue... or a worn tensioner. The Eaton places a lot of load on a belt and if the balancer is "wrong" undersized in diameter it will toss the stock length serpentine.

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