annoying belt squeak

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So my civic recently got new belts after 200 miles they would squeak for a second when applying throttle . So I tightened them problem solved....1500 miles later and they're squeaking again. What gives? Should i tighten them AGAIN! Very frustrating. Any tips?
 
No leaks. Or contamination. They're master pro. I have never had an issue until now but most all my cars have a belt tensioner pulley system, this one is old school.
 
Master Pro sounds like a house brand from a chain auto parts store. I've used non-name brand belts in the past with noise problems. The quietest belts I've used are Goodyear Gatorback and the longest lasting belts I've used have been Gates. Dayco and all others I avoid due to noise and wear issues.
 
Ive closely inspected gates and oreilly auto parts master pro , they both look identical with the same exact marking except gates printed on them, in my experience gates belts stretch quite a bit which causes them to squeal being a problem on manual tensioners
 
I would be looking at all the accessories that the belt drives, power steering, water pump, alternator etc. If a new belt squeaks, then it's probably an indication that an excessive drive load is present.
 
My old Sonata (MY-y2k, 2.4l4cyl) would go through similar issues to what the OP stated using aftermarket belts. took it to my local indie when they started squealing. replaced with something aftermarket/ a "lifetime warranty". week later, chirp, chirp,chirp. take it back to him. tightens it down.
couple months later. squeal is back. replaces again(for free this time)with the same re tighten after a week or so.
couple more moths down the road, same thing again.
this time he ordered the OE Hyundai belts from the dealer.(still on his dime)
never had another belt issue for the remaining time i owned the car (~2yrs)
 
If it's an older Civic (2000s or older) it can be hard to get good tension on the alternator belt. The AC and PS have screws to tension the belt but the Alt just has to be levered against the engine until it is tight enough. The trick is to get the "right" crowbar (or HUGE screwdriver) wedged in the "right" spot and really put some tension on it.
 
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