Triumph Vitesse 2 litre Mk 2, HEO 917H VIN HC54909CV Engine HC54826HES My car had an overdrive conversion kit, from Trading Triumphs of Northwich, fitted in 1997. Presumably it was a reconditioned unit at the time. I bought the car in July this year and for the first 200 miles I've done the overdrive worked perfectly. Then it suddenly disengaged and would not re-engage during the remaining 50 miles of my journey. The next day it worked fine for about 50 miles and then the same problem recurred. It seemed the problem could be with hot oil being too thin so I had the oil changed. Since then the overdrive has been fine on various short journeys but it disengaged again after about 15 miles; and the same happened on the return journey. I've been told I may need a replacement reconditioned unit at a total cost, including refitting, of about £1,000. However, I'm hoping there's a much simpler and cheaper solution, possibly involving the wiring, solenoid or pistons. Any suggestions would be VERY MUCH APPRECIATED! Interestingly, I was able to lease a new Vitesse Mark 2 in 1971. I loved it but it had the same overdrive symptoms! They were cured, at the second attempt, by a Triumph dealer but I don't know what they had to do.
