For the past two months I've had a distinct whine coming from the transmission of my 96 D1. It's not overly loud, quite high pitched, and happens only while moving and not coasting, stopped or in park. e.g. If I let off the gas the whine goes away. A slight pressure on the gas pedal and it's back - even a quick blip that doesn't increase my speed - brings it on for a few seconds. It gets louder under load, goes away when coasting.
Tranny fluid was just changed 5k ago and is still full. It was suggested to me that the transfer case oil might be low, so I checked it yesterday. It was full but a bit dirty, so I replaced it. No change to the whining.
I don't think it's the water pump or it would do it when I rev the engine while parked.
I do have a slight oil leak from the main seal on the front cover and the oil pressure light stays on for a few seconds on cold startup. Neither of these could cause the whine IMHO.
Any guru's out there that might have an idea what might be causing the noise?
Thanks,
Tranny fluid was just changed 5k ago and is still full. It was suggested to me that the transfer case oil might be low, so I checked it yesterday. It was full but a bit dirty, so I replaced it. No change to the whining.
I don't think it's the water pump or it would do it when I rev the engine while parked.
I do have a slight oil leak from the main seal on the front cover and the oil pressure light stays on for a few seconds on cold startup. Neither of these could cause the whine IMHO.
Any guru's out there that might have an idea what might be causing the noise?
Thanks,