belt tensioner - MustangForums.com



5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 03-28-2006, 07:09 PM   #1
SPE926
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Default belt tensioner

if a belt tensioner is bad how can you tell

will it not put enough tension on the belt or will it give too much
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Old 03-28-2006, 08:58 PM   #2
Blue Oval
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Default RE: belt tensioner

it wont give enough tension. there should be about 1/2" of play in the belt when you try to push on it with it all set up
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Old 03-28-2006, 09:11 PM   #3
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Default RE: belt tensioner

Not enough tension, the bearing in it can go bad, or sometimes when the spring in it wears out it will **** sideways and not be in line w/ the other pulleys.
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Old 03-28-2006, 09:54 PM   #4
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Default RE: belt tensioner

dont let it go to long if its bad, i've seen them seize up and trash the belt
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Old 03-28-2006, 10:08 PM   #5
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Default RE: belt tensioner

i just replaced my tensioner because it went bad. i was having horrible belt slippage on my alt but the new tensioner fixed that
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Old 03-29-2006, 02:14 AM   #6
SPE926
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Default RE: belt tensioner

for some reason my tensioner is too tight

i am using the belt i am supposed to be using any ideas why this would happen
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Old 03-29-2006, 03:24 AM   #7
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Default RE: belt tensioner

how do you know its too tight?
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Old 03-29-2006, 02:08 PM   #8
SPE926
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Default RE: belt tensioner

the little arrow is way past the range on the tensioner
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Old 03-29-2006, 04:23 PM   #9
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Default RE: belt tensioner

yea can buy a ne won at 50resto.....think they were under 20$
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Old 03-29-2006, 04:28 PM   #10
Derf00
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Default RE: belt tensioner


Quote:
ORIGINAL: SPE926

the little arrow is way past the range on the tensioner
If the arrow is PAST the wear range, the tensioner is not bad, your belt is stretched or you may need a slightly shorter belt. A bad tensioner would either squeal like a stuck pig (the bearing) or the belt would be really loose (the spring would be busted). Have you stuck an 18mm wrench down there to see if there is tension?
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