I just want to know, on a 1991 Volvo 240, how *should* the button, the arrow light, and the transmission behave? What does the arrow indicate? When should it come on?
When the button is pressed and the arrow indicator light is on the overdrive gear is not being used and you only have 3 speeds. When the button is pressed and the light is off you have overdrive. Normal use you should not see the arrow.
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All the ones I have come across have it. Basically it allows gearbox and engine to sync for greater fuel economy when you are not 'town driving' I.e doing more than 25 MPH. I've always left my overdrive engaged as you usually get better fuel economy. To try, take it onto a long open road, engage overdrive and bring her up to speed. Then turn off overdrive and watch your fuel gauge. You can pretty much see it drop.
What is happening is the tranny is going. They can try to replace the selenoid, but really, you need a rebuild. Whomever charged you to remove the light, probably messed things up more. Volvo's typically lose overdrive before losing all the other gears. It is time for a rebuild. Go to a reputable tranny shop who knows volvos.
You don't say whether it is a manual or Automatic trans ( they both have an electric overdrive). Assuming it is an Auto trans the problem is most likely the Orange colored OD relay to the left and behind the Glove box. Or the push switch on the gear selector may have an open circuit but less likely.
Hi, the relay for the overdrive is located in the center of the dash to the left of the glove box way up under the dash. It's a long reach so use a flashlight. Enjoy!
The overdrive solenoid is connected to the transmission itself on this Volvo. You will find the switch on the passenger side of the transmission. It looks like this
As a means of testing operation of the solenoid - you can ground out this switch by turning the key in the ignition into the on position. Make sure engine is off and the transmission in 4th gear and listen for the click of the soleniod on the back of the overdrive. Also the light on the dash should iluminate as well.
Hope this helps. Please remember to rate my answer. Many Thanks.
This sound like the overdrive relay. try to reset the relay. It looks like this one. I am in no way affiliated with the site my brother had the same problem with his Volvo
More likely that the solenoid in the transmission is shorted to ground. Has any new electronic equipment been installed recently, like stereo, alarm, etc?
Means the overdrive is disengaged. There should be a button on the side of the shifter. If pressing this does not engage the OD, then you may need to replace the OD solenoid.
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