Why does transmission noise go away in third gear?
This means that if the noise is caused by either planet, it will go away when the transmission shifts to third gear. Unfortunately, although the noise is quieter in third gear, it is still there. Further diagnosis requires an intimate knowledge of the unit being tested.
Why does my car make noise when not in gear?
If the car doesn’t make the noise when it is not in gear, chances are it isn’t an engine noise. Race the engine gently with the car in Neutral and listen carefully for any signs of the offensive noise that are associated with the engine speed.
Why does rear differential noise sound like a broken gear?
Having a chipped or missing high spot on a gear tooth sounds closely similar to a broken gear except that the rear differential noise only happens while accelerating or decelerating. This is because the problem is just present on one side of the offending tooth.
When does a manual transmission make a whining noise?
A manual transmission is only turning when the car is either in motion, or when the transmission is in Neutral and the clutch is engaged (your foot is off the pedal). So sounds that occur while the car is stationary and in gear are most likely associated with the clutch.
This means that if the noise is caused by either planet, it will go away when the transmission shifts to third gear. Unfortunately, although the noise is quieter in third gear, it is still there. Further diagnosis requires an intimate knowledge of the unit being tested.
What kind of noises do you hear when you shift gears?
Use some fast acceleration, allowing the transmission to firmly shift. Listen for any rumbling, growling or mechanical metal-to-to metal noise in each gear just after it shifts. Such noises indicate problems with the individual planetary gears, input shaft or interior transmission bearings.
If the car doesn’t make the noise when it is not in gear, chances are it isn’t an engine noise. Race the engine gently with the car in Neutral and listen carefully for any signs of the offensive noise that are associated with the engine speed.
Having a chipped or missing high spot on a gear tooth sounds closely similar to a broken gear except that the rear differential noise only happens while accelerating or decelerating. This is because the problem is just present on one side of the offending tooth.