Idler Pulley on Suzuki Aerio Not spinning at all. - Suzuki Forums: Suzuki Forum Site
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Old 12-21-2010, 10:00 AM   #1 (permalink)
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Default Idler Pulley on Suzuki Aerio Not spinning at all.

I have checked the idler pulley and it will not spin completely. Just about have an inch and then stops. The vehicle is making a strange squelling noise. My question is does the idler pulley need to spin or not. Thanks.
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Old 12-21-2010, 10:47 AM   #2 (permalink)
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It's a pulley, belts run on pulleys, belt move, pulley moves with belt - if pulley not move when belt move, then belt squeal.

Replace the idler pulley assembly or the beaing in the center.
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Old 12-21-2010, 11:48 AM   #3 (permalink)
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Thanks Fordem. Thats what i figured. Appreciate your suggestion.
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Old 12-25-2010, 11:32 PM   #4 (permalink)
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Default All Fixed Idler Pulley for Suzuki Aerio SX 2002

The idler pulley was replaced. To get to it was a pain... I guess for someone that hasn't worked on his own car like this before.

1. Removed the Serpentine belt from the pulleys
2. Remove the Air intake housing and filter.
3. Propped up both sides of the car on jack stands, and propped the engine with a jack and piece of wood under the oilpan to keep the motor from falling.
3. Removed the engine mount bolt on passenger side so we can move the engine a tad to get to the pulley and remove it.
4. Removed the nut on the pulley and replaced the pulley with a Factory part from suzuki. Whopping 80 bucks, but it works. The aftermarket part was not the right part at all. Gates(38010 or something like that)
5. Put everything back...The bolt for the engine mount was somewhat tough to get back in. getting the holes to line up were a pain. That was all. Pulley was replaced, and belt, etc.

The new bearing is great, probably all I would have had to replace, but didn't want more headache. No more turbine engine sound coming from my engine when i would rev to 3000 rpms, Thank God.
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Old 03-05-2011, 01:00 PM   #5 (permalink)
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Default Does the idler pulley nut have reverse threads?

2003 Suzuki Aerio SX 2.0 L engine
Car is making a screaming noise. Noise comes and goes. Removed the generator drive belt (serpentine belt), spin everything by hand. Idler pulley is making a squeaky bearing noise. Ordered a new idler pulley from the dealer.

Now I am wondering if the nut on the idler pulley is a reverse thread?

Copy from Service Manual: Generator - Rotation - Clockwise viewed from pulley side.
Should have looked at the rotation direction before I took the serpentine belt off.

Please correct me if I am wrong but it looks like the idler pulley spins counterclockwise. Does that mean counterclockwise to tighten? Clockwise to loosen the nut on the idler pulley? Does the idler pulley nut have reverse threads?

Bad things will happen if I put a 3 foot pipe on the wrench and turn the nut in the wrong direction.

Here is a picture of the serpentine belt from the Service Manual also a scan of page 1-435 in PDF format.

If anyone wants to see some pages from the service manual? I be happy to scan.
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Old 03-05-2011, 01:12 PM   #6 (permalink)
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Default Does the idler pulley nut have reverse threads?

I don't remember it having reverse threads. The idler pulley should move each direction. The threads are normal. Are you having problems removing the nut from the idler bolt?

These suzuki's are known for their failing idler pulleys from my research and personal experience. Also, i noticed that the catalytic converters rattle, mine does i think, but i've not diagnosed it.
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Old 03-05-2011, 01:24 PM   #7 (permalink)
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Have not tried to get the idler pulley nut off yet.

To find exhaust rattle noise, just listen while the car is running. Find what is rattling and remove it. I have removed assorted sheet metal parts, and a heat guard between the engine and the radiator. Remember a [Don't touch HOT symbol] on it.
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Old 03-05-2011, 03:07 PM   #8 (permalink)
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Standard right hand thread on the idler pulley - and I can't agree that they are "known for failing idler pulleys" - there would be a lot more threads like this if there were.

Later Suzukis using the same engine have a different tensioner pulley which does have a high failure rate - because of a greater plastic content - but this idler is all metal.
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Old 03-19-2011, 09:57 AM   #9 (permalink)
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Quote:
Originally Posted by tzarza View Post
xxx The bolt for the engine mount was somewhat tough to get back in. getting the holes to line up were a pain. xxx
Thanks for the instructions. Its all done. I also had trouble putting that long engine mount bolt back in. I used a mirror and a flashlight to look in hole and see which way to yank motor so holes line up.
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