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1990 Chevrolet Truck Serpentine belt

Tiny
JMGARCIA1988
  • MEMBER
  • 1990 CHEVROLET TRUCK
  • 7.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 400 MILES
Am having a lot of trouble with my smoke pump device on my 90 chevrolet 1500 454 ss 7.4
I get a new one (rebuilt) but they don't even last me a month! So as of know I removed the smoke pump and the idler pulley. And now my belt tensioner goes out on me as well it makes noice is it cus am missing the idler pulley? What can I do so I won't have that problem? Any help al appreciated.
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Monday, December 16th, 2013 AT 12:01 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
I'm not sure I understand. Have you removed the idler pulley?
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Monday, December 16th, 2013 AT 5:17 AM
Tiny
JMGARCIA1988
  • MEMBER
  • 5 POSTS
Yes I removed the smoke pump and the idler pulley. So I know that smoke pump you don't need it's only to pass smog right? So now I have smaller surpentine belt it's a so now my belt tensioner goes out on me like every other month is it cus am missing the idler pulley? Any help? Thank you
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Monday, December 16th, 2013 AT 10:20 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
First, the air pump is part of the emissions system and is required by federal law. As far as the belt, are you sure the belt is the right length not that you have changed things?
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Monday, December 16th, 2013 AT 10:40 AM
Tiny
JMGARCIA1988
  • MEMBER
  • 5 POSTS
Yes the belt is the correct size. Without the smoke pump n the idler pulley
My mechanic told me I could out on the smoke pump just for the smoke check. So rite now let's forget about the smoke pump.
My concern is right now why does my belt tensioner goes out on me so quick? Like I said I don't have the smoke pump or idler pulley
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Monday, December 16th, 2013 AT 10:59 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
When installed, is the tensioner fully extended or nearly fully collapsed? I hate to say it, but I feel it has something to do with the belt size. What else would cause it?
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Monday, December 16th, 2013 AT 11:22 AM
Tiny
JMGARCIA1988
  • MEMBER
  • 5 POSTS
You mean when when I first get the tensioner from out the box? New? Fully extended rite now it has a belt size 75. Last time I tried a belt size 80 but it was to big it started making noice from the belt
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Monday, December 16th, 2013 AT 11:34 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
When the belt is in place, how is the tensioner?
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Monday, December 16th, 2013 AT 5:37 PM
Tiny
JMGARCIA1988
  • MEMBER
  • 5 POSTS
The tensioner moves it shouldn't move rite?
I think I am missing the idler pulley
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Tuesday, December 17th, 2013 AT 4:17 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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The tensioner rides on a spring so it can move. However, there should be a good bit of tension on it.
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Wednesday, December 18th, 2013 AT 6:42 AM

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