My wife has a 1977 MGB w/ overdrive. The overdrive is activated by the flick of a switch on top of the gearshift. Lately it has been going into overdrive after activating the switch, but it kicks out and causes the car to sputter between the overdrive and 4th gear. It is obviously malfunctioning.
My mechanic says it isn't the electric switch but a part in the transmission and he says to replace the part, he needs to drop the transmission and do a major job costing almost $3000.00 I have trusted this guy up until now, when I find myself questioning his solution to this problem, and particularly the cost.
What does anyone know about this situation, and is it likely the transmission needs to be torn apart to fix this problem?