On a 1985 Volvo 240, the overdrive relay is typically located in the driver's side footwell, mounted on the side of the console or under the dashboard. It may be found near the fuse box or behind the kick panel. If you're having trouble locating it, consulting the vehicle's service manual can provide specific guidance and diagrams.
I had this problem about ten years ago on my 1990 740 GL. The problem was actually a defective relay. The relay is controlled by the button on the gear shift knob and is used to prevent going into 4th gear when towing. It is located among all the relaysbehind the ashtray in the center console panel. Behind all the fuses. At that time I went to the Volvo dealer and bought a new relay and from that worked out which relay to change. In those days it cost me about $45.00. Has worked fine since then. Good luck. You must to isolate the source between the Overdrive relay or the Overdrive solenoid and the overdrive switch at the shifter. Ignition on, engine off - Push the overdrive switch, if you can ear a light click the relay and the switch are probably Ok, check the overdrive solenoid at the transmission. If you don't have the click you have to trouble shoot the switch to see if it's working. - Check continuity to the switch and the 12 volts. - If evething seem to be OK, change the Overdrive relay Good luck
Driver side, near the center, under the dash
yes and ignition relay would..
On my 88 240 the wiper relay is located to the left of the clutch pedal, behind the insulation and a small metal plate - just pull the wires out from the top, and you should find the relay.
If relay & fuse OK then you will need to remove overdrive solenoid from the side of the gearbox and clean it - gunk can build up around the small holes stopping the flow of auto fluid therefore stopping the gearbox going into overdrive. It can happen intermittently until orifices block completely .
Do you have your terminology right....The injector relay would be the computer right??? The fuel pump relay could cause that problem!!!! good luck and let me know
I may be way off, but in my '85 240, the relay is beneath the dash on the passenger side. I don't know if it was moved after 85. Good luck. Yes that's right, its under the dash , its easiest to take out the glove box to get at it. You don't have to take the glove box out to remove the fuel pump relay. If you're thinking of the overdrive relay you would be correct. To remove the fuel pump relay, you have to remove the cloth cover under the passenger side of the dashboard. The relay is rectangular, and attached to the firewall by a metal clip. It's white in color and the part number is 3523608.
On the inside firewall, at the base of the glove box. Most likely white and to the left near the computer/ control box.
You did not say what year. On the 1989 Volvo 240 GL, the headlight relay is mounted on the drivers side front fender just back from the battery box. The relay has two plugs going into the bottom and I would say about 1 inch wide, 2 inches long and about 1.5 inches deep. The relay that you're referring to is the high beam relay. The headlight relay switch is located in the cab of the car behind the brake and gas pedals. You pull back the carpeting and it is mounted to the firewall.
The Volvo 850 1997 fuel pump relay is under the fuse box compartment, you would need to take out the upper portion of it and then you would be able to easily find it undeath. elyunque000@yahoo.com
Overdrive Solenoid
It is white, rectangular and has 6 prongs. To access it, remove knee bolster from the passenger footwell. Should be just above where the carpet stops.