rjsdavis
Active Member
- Posts
- 135
- Location
- Herne, Kent
Dear all
I have two noises and another separate quirk that I am trying to identify in my Discovery 2 TD5 (1999) with an auto box;
1 - When moving off from the stationary, there is a distinct "hiss" which is related to the throttle and throttle use. If moving off from stationary, it will last about 1-2 seconds and then disappear. It won't come back unless I idle and lose speed, and then use the throttle again - when it will briefly (less than a second) re-appear, or if I go back to a full stop and start off again. Should it do this? My 300 Tdi never made this turbo hiss type noise!
2 - When moving at low speed and higher torque, i.e. moving up a hill slowly, there is a rattle coming from underneath the car. It only happens between 1750 & 2500 revs, and only at low speeds. It does happen in the same rev range on the flat, but is less noisy. It dissipates largely when the car is very warm, and has been running for 30 minutes or longer. Any ideas?
3 - Just a niggle - she can sometimes be slow to change up properly to 4th gear. She should move upto 4th at about 55mph, and will should drop down to about 2,000 revs. However, whilst she is cold, she will change up, but the revs only drop down to just below 3,000 revs. It can take anything between 10 - 25 minutes before she is warm enough to fully drop down in revs at 55-60mph. Any ideas?
Thanks so much in advance to anyone kind enough to reply.
Richard
I have two noises and another separate quirk that I am trying to identify in my Discovery 2 TD5 (1999) with an auto box;
1 - When moving off from the stationary, there is a distinct "hiss" which is related to the throttle and throttle use. If moving off from stationary, it will last about 1-2 seconds and then disappear. It won't come back unless I idle and lose speed, and then use the throttle again - when it will briefly (less than a second) re-appear, or if I go back to a full stop and start off again. Should it do this? My 300 Tdi never made this turbo hiss type noise!
2 - When moving at low speed and higher torque, i.e. moving up a hill slowly, there is a rattle coming from underneath the car. It only happens between 1750 & 2500 revs, and only at low speeds. It does happen in the same rev range on the flat, but is less noisy. It dissipates largely when the car is very warm, and has been running for 30 minutes or longer. Any ideas?
3 - Just a niggle - she can sometimes be slow to change up properly to 4th gear. She should move upto 4th at about 55mph, and will should drop down to about 2,000 revs. However, whilst she is cold, she will change up, but the revs only drop down to just below 3,000 revs. It can take anything between 10 - 25 minutes before she is warm enough to fully drop down in revs at 55-60mph. Any ideas?
Thanks so much in advance to anyone kind enough to reply.
Richard
