Hello,
I have a 1990 Volvo 240 with AW70. I've owned the car since last summer and today I was replacing some of the last failed bulbs which had been in that state already when I bought the car.
I was slightly surprised to find that the "overdrive off" indicator light on the metre console is always lit iff the engine is running (as far as I remember, I'll have to ascertain this). The "overdrive off" indicator flickers when the engine is idling but the flicker quickly vanishes when acceleration pedal is pressed.
Yet overdrive still works fine, including the button for enabling or disabling it. I'm pretty sure of this since the effect of disabling overdrive at 100 km/h (about 62 mph) is very noticeable. Whether overdrive is enabled or disabled does not seem to have any effect on the indicator.
So, my question is: is someone able to guess what could cause the described symptom? Obviously it's not the famous oxidised fuse contacts since that would prevent overdrive from working altogether.
Regards,