1990 gt 5.0 smog pump question - Mustang Evolution

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Old 05-31-2012, 11:19 PM   #1
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1990 gt 5.0 smog pump question

Okay I was wondering if the air pump in the 1990 mustang was still necessary (the pump that sits below the alternator bottom left pulley under the hood) me and my dad read online and it said it wasn't and if your having problems just to get a serpentine belt for the mustangs without a/c and just bypass the pulley but I wanted another opinion on the subject
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Old 05-31-2012, 11:42 PM   #2
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Re: 1990 gt 5.0 smog pump question

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Originally Posted by Zacm90gt View Post
Okay I was wondering if the air pump in the 1990 mustang was still necessary (the pump that sits below the alternator bottom left pulley under the hood) me and my dad read online and it said it wasn't and if your having problems just to get a serpentine belt for the mustangs without a/c and just bypass the pulley but I wanted another opinion on the subject
It is only necessary if you need it to pass a smog check.
You can either run a shorter belt to bypass it or use a smog pump delete kit.
Be sure to keep your water pump and other accessories turning in the correct direction if you use a shorter belt.
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Old 05-31-2012, 11:55 PM   #3
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Okay thank appreciate the help
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Old 06-01-2012, 12:49 AM   #4
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Re: 1990 gt 5.0 smog pump question

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Okay thank appreciate the help
No problem and welcome aboard.
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