Help and hints with 3.5 Smooth idler pulley replacement - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-11-2009, 04:38 PM   #1
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Default Help and hints with 3.5 Smooth idler pulley replacement

Well the pulley froze and looks like a pain in the rear to replace. I believe the engine mount needs to be removed and with that i assume the engine needs to be held up. Am I close guys? any particular pulley should I buy. Do they make a smaller Pulley and belt combo to add a little more HP? Is this something I should have a shop do and if do what is the book time on it?

Thanks, Jack
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Old 01-11-2009, 04:52 PM   #2
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Whick pulley are you looking to replace? Pictures if possible. If your looking to add power I assume this is your supercharger belt? You woudl need to put a smaller pulley on the supercharger to do that. 3.5" is as small as you shoudl go. You will also need a pulley puller for the job. A jaw style will not work.
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Old 01-11-2009, 05:00 PM   #3
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Its the 3.5 89006 pulley
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Old 01-11-2009, 05:02 PM   #4
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Can I do any harm if I drive the car without the SC hooked up for a couple of days?
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Old 01-11-2009, 05:16 PM   #5
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No, wont hurt it.
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Old 01-11-2009, 05:40 PM   #6
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and watch your gas mileage go up to....but no fun factor
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Old 01-12-2009, 02:26 PM   #7
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You are correct. The mount needs to come off. (Guys..i't'* pulley #9, the SC idler pulley)

The procedure is to jack the passenger side and remove the front wheel. Under the body side of that mount are two 15mm bolts. Loosen them, do not remove. Put the wheel back on and lower the car. Use a piece of wood under the oil pan to distribute the weight, and use a jack to lift up slightly. Remove the main bolt from the center of the body and engine side mounts. Lower the motor slightly to relieve pressure on the body side. Remove the two remaining bolts on the body side (look straight down at it from above). Lift up and wiggle the body side out. This gives you room to work on the engine side. Remove the bolts holding the ps pump to the engine block (2 13mm'* one at 12 o clock and the other at 6 o'clock) by going through the holes in the pulley. Lower it gently as to not hurt the oil pressure sender below it. Remove the nuts holding the bracket to the motor. I prefer to use E or external torx bits to remove the studs. Be wary that there are washers behind the bracket and you may lose them or the spacers if not careful. Once the studs are out, the bracket comes off easily and the pulley is easy to replace.

My preference is Dayco or another metal pulley of the correct size.
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Old 03-03-2009, 01:27 AM   #8
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Quote:
Originally Posted by Toddster View Post
and watch your gas mileage go up to....but no fun factor

Really ???? didnt figure that
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Old 03-03-2009, 07:41 AM   #9
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Its because your off the gas, when you know you have more power you use it

I can't wait to be able to hit it at a red light and not just slide on salt lol
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