I Need Some Help Diagnosing Engine Noise.
Thread Starter
Drifting
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
I Need Some Help Diagnosing Engine Noise.
It sounds like a very low pitched squeal / grinding sound coming from the front of the engine. Since there are so many moving pulleys and bearings it's impossible for me to determine which component is the culprit. I checked each fluid circulating component for leaks and found none. All gauges indicate normal readings and there are no trouble codes. I was even tempted to use the old giant screwdriver to the ear but I don't know what to listen for. I really hate to start replacing parts that are still good and are in working order and find the problem by process of illimination. Thanks for any help.
Melting Slicks
Joined: Jul 2003
Posts: 2,384
Likes: 124
From: Reno/Sparks Nevada
Giant screwdriver works for me. Check the idler pulley and the air pump. Those two seem to make the most noise IMO. If you can hold the screwdriver on the bolt of the idler pulley you'll be as close to the bearing as is possible. Anythings possible, check all of the components.
Art
Art
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Originally Posted by DRAKEFAMILY2
You might try removing belt and spinning everything by hand. Something might be hard to turn, feel loose or make a noise.
That's how I found the water pump bearing was going. Not leaking, just noisey.
Thread Starter
Drifting
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
Originally Posted by Steel Blue 91
That's how I found the water pump bearing was going. Not leaking, just noisey.
