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Belt Squeak

  • Thread starter Thread starter 7r3s3oqk37ums0f
  • Start date Start date Nov 13, 2007
7

7r3s3oqk37ums0f

New Member
Aug 12, 2007
46
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0
Detroit, MI
Nov 13, 2007
#1
  • Nov 13, 2007
  • #1
My current issue is related to belt squeak. The belt squeak is constant, and occurs at idle or during engine load.

Please make note of description #2 below.

1. The belt squeak progressively worsens after a new belt is installed, and may reduce in severity as the engine warms up. However, the problem will worsen to the point that belt squeak is audible from engine start to engine shut off regardless of engine temperature.

2. It may be important to note the following. The vehicle suffered front end damage that caused the driver side frame rail to push against the power steering pump. There seems to be a lot of fore/aft movement in the power steering shaft. Completely removing the pulley results in the same fore/aft movement. See the video below for evidence of this movement. The video is more "audible" since you really can't see the movement.

Power Steering Pump Fore/Aft Movement

3. While the vehicle was being repaired, the engine was pulled and an 8 rib kit was installed. The belt squeak did not occur before the accident. Again, the power steering pulley was damaged during the accident, and the 8 rib kit was installed during collision repair.

4. Replacing the belt with a new belt, completely eliminates the belt squeak.

5. Completely removing the belt eliminates the noise.

6. Water sprayed on the belt eliminates the squak momentarily.

7. Belt dressing sprayed on the belt actually made the squeak worse.

8. I purchased an automotive stethoscope. However, I'm not able to really listen to the A/C, power steering, crankshaft, alternator, supercharger, and tensioner pulley because the pulley and fasteners all rotate. The remaining pulleys don't make any audible squeak noise.

9. The crankshaft is approximately 0.175 inches from the timing chain cover. The instructions that GI Joe includes with the 8 rib kit reference a need for approximately 0.200 inches.

10. I have replaced factory tensioners, and installed both Kenne Bells tensioner and currently have Thump RRRs tensioner.

11. Increasing tension on the belt does not eliminate the noise. I have adjusted Whipple's sliding idler pulley for maximum tension. I have also applied maximum tension on the tensioner pulley using a lever to increase tension while at idle.

12. Since the squeak can audibly minimize after the engine heats up, I thought I might try using a propane torch and heat the pulleys to see if I could draw any conclusion. If I heated the crankshaft pulley, it would instantly change in sound, but the squeak never went away. Heating any other pulley resulted in no audible change in the squeak.
 

bigcat

start with the upper hole, and if more traction is
May 1, 2005
3,015
1
79
7200 feet
Nov 13, 2007
#2
  • Nov 13, 2007
  • #2
so you got a new pulley for the power steering? was the shaft bent? does the pulley spin perfectly with no wobble when viewed from the side.? it is possible that more than just the pulley was damaged in the accident. this is one of the drawbacks to upgrading during repairs. its hard to troubleshoot if it is the new parts, or something else.
 
7

7r3s3oqk37ums0f

New Member
Aug 12, 2007
46
0
0
Detroit, MI
Nov 13, 2007
#3
  • Nov 13, 2007
  • #3
bigcat said:
so you got a new pulley for the power steering? was the shaft bent? does the pulley spin perfectly with no wobble when viewed from the side.? it is possible that more than just the pulley was damaged in the accident. this is one of the drawbacks to upgrading during repairs. its hard to troubleshoot if it is the new parts, or something else.
Click to expand...

The shaft moves in and out, but thats it. There is no wobble.

Honestly, the accident was so long ago, so there's no way I can recall the extent of the damage. I honestly don't recall if the pulley or the shaft were bent.

The new pulley was the one included with the 8 rib kit. So, the pulley was replaced, technically.
 
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