88 240 wagon, automatic. Good working relay. Wire below shifter comes down from shifter, spliced poorly under car, over transmission into seloniod. No overdrive engagement. Removed switch from shifter and found empty hole. No wire, no reciever for two prongs of switch, nothing. Wire comes out bottom of shifter under car, but from where. I belive the thumb switch. If it goes up into thumb switch it's not there. Whats supposed to be in the shift knob when you remove the switch. Prior to switch in empty hole, I had a bad relay . Light stayed on in dash, no clicking of switch (suprise, suprise), 3spd automatic. (got
25 mpg). Replace with good working relay out of my 85 240 DL, light goes out, still no overdrive,and still no click from switch (Duh). I've read that I can remove relay and jumper out the connector ( see below) and always run like a four spd. auto. Thats fine for me till I fix bad relay, but will missing switch assembly scrap that idea. If I buy new switch from anywhere, do I get whats in the shift knob or just what I already ave.
Also, how do I stop "service engine " light from cycling on after start up. I've already performed services.
Thanks Ray
...assuming you don't want/need the switch-controlled downshift, and the relay really is at fault, it can be easily removed and by-passed by a jumper wire in the relay harness plug. (As long as Fuse 11 and the wire from the relay harness to the solenoid are OK.) The jumper (use relay-sized flat male ends on wire) goes between: The terminal 15 position (Blue/Black and Gray wires, voltage from fuse
11) The terminal 87 position (White wire to Solenoid) The effect will be like a relay that is always in the OD On state, as it normally is unless toggled Off for a selected downshift
PS: I see that the wire goes from the selonoid to the relay so I'll try the bypass and see what happens unless I get some terrible warning not to.