Why is the gearbox whining in 5th gear?
I bought an old VW Golf II recently. The gearbox was whining when driven in 5th gear between 75 and 90 KPH then it would stop. I suspected gearbox oil, so I had it changed. I was there when the mechanic drained it out and it was totally black and had low viscosity. It was most probably used engine oil that previous owner had put in.
What does it mean when your transmission whines?
It is not necessarily the case that the whine is the transmission, but if it is then what it means is that the PCM has the line pressure ramped up for some reason. It does this when it has detected a problem.
Why is the gearbox whining at 70 kph?
The good news is that there were no filings. Now with the new oil (proper gearbox oil) the whining is not as loud, but it can be heard from 70 KPH to over 100 (haven’t driven it faster). It disappears when I lift of the throttle or press the clutch. The volume of the sound changes with the amount of engine load. No other gears make this noise.
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.
Why does my transmission whine when I shift gears?
If the whining noise seems to change with gear shifts or is coming from your transmission it could be an indication that it is time for new transmission fluid.
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.
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.
Why does my 4T65E transmission whine so much?
The 4T65E transmissions are widely loved when they work but are also very trouble prone regardless of actual mileage. It is not necessarily the case that the whine is the transmission, but if it is then what it means is that the PCM has the line pressure ramped up for some reason.