| Author | Message | ||
     Alan Dibley Frequent User Username: alsdibley Post Number: 360 Registered: 10-2009 |
This is just an observation about a strange occurrence on my Bentley T. The car was left for three days in a hotel parked facing uphill. At the start of the journey home, it was trickled downhill backwards for 50 yards to turn round at the bottom of the hill. A bit of throttle in "Drive" produced some loud weird noises and only a little action. After a few hundred yards the symptoms disappeared and the journey was the usual uneventful pleasure. With the benefit of a little thought I conclude that the torque converter had partly drained into the gearbox, and took some time to refill via the gearbox pump mechanism. If I had realised that I would have left it idling, or driven VERY gently for a time, to avoid damaging the TC by cavitation or whatever. The Dexron level is fine - just comfortably overfilled by a few millimetres. Alan D. | ||
| Mark Aldridge Frequent User Username: mark_aldridge Post Number: 824 Registered: 10-2008 |
Alan, when I change the ATF in my cars, I usually jack the front end overnight before, to enable the converter to drain down as far as it will. This seems to work to a degree as the oil drained is more than the handbook suggests for a tqf change. Mark | ||
| Alan Dibley Frequent User Username: alsdibley Post Number: 361 Registered: 10-2009 |
Mark, I've not seen this effect mentioned before. Most of my experience is on automatic Citroen CXs with ZF gearboxes - transverse-engine and gearbox, so no similar action unless really lop-sided. I should have been really worried by the violent noises, but I was in moving traffic on a narrow road and it would have been embarrassing to stop. Cavitation can be destructive. Alan D. |
