Check the overdrive relay switch.
Check O/D switch by all means....but the most common problem is usually the Overdrive Relay. It's located behind the centre vents on your model, replace with EXACTly same part no. .....other similar relays will drive you crazy by disengaging each time you turn engine off - requiring you to remember to click it ON again.
Overdrive relay switch behind the middle air vents..... Manual Transmission: the wires sometimes break if it is the type with the button on the gear/knob/ stick........... if it is a manual transmission.......the switch on the gearbox which tells when 4th gear is engaged can be faulty.....and will not allow the overdrive to engaged.
my 1990 mercury marquis transmission is slipping in overdrive what do i need to look for and how can i fix it
the fuse is in the dash behind the overdrive switch
That truck came factory with a 700R4 transmission. And that has overdrive in it already.
behind the ashtray
no. throttle body
Volvo recommends 10w30 full synthetic oil.
how do adjust timing belt on a volvo 240 DL ?
1990 World Series - 1990 was released on: USA: 16 October 1990
why does the 1991 Lincoln towncars transmission not have overdrive?Instead of going into overdrive it seems to go into neutral.But if you take it out of overdrive and leave it in drive it never goes into neutral while I'm driving.