help diagnose whining noise

Are you sure you don't have a vacuum port open..?? plug blown off..

You need to invest in one of these stethescopes,, the cool thing is,, if you unscrew the "needle" section,, the "cone" that remains act like an old trumpet ear phone,, you just point the cone at the engine,, move it around till you find the direction of noise,, then just follow the cone to the noise,, in this case, the whistle..

Attach the needle, and you can place it against the outer case of diff or axle bearing, water pump,, and actually hear the bearings tuning,, and can really hear a bad bearing..

http://www.amazon.ca/dp/B0002SQYSM/?tag=joeychgo-20

It's a "Lisle" avail at any parts store..

Less than $20,, will be one of best $20's you spent..


Detailed Description

Dual Purpose Set Detects Both Mechanical and Air Induced Sounds. Use the black diaphragm chamber and screw-in metal probe to detect mechanical sounds from bearings, engines, transmissions, etc. For air induced sounds, attach the vinyl hose to the hollow tube and funnel assembly. The funnel amplifier will detect noises from vacuum leaks, exhaust leaks, air leaks and wind noise. For hard to reach locations, remove the funnel and use the hollow tube.