If you should try taking yours apart be very careful. After about 10 miles they stopped. The headlights may come back on after switching them off, then on again. With this type of relay, pins 87and 87b are common when the relay is energized and both give power at the same time. You might be able to confront the head of the local dealerships service or parts dept. The car currently has 145K and is a honey. My 1995 940 non-turbo with 69K miles had poor acceleration and would surge slightly while running steady.
It would start with a shot of starting fluid, then be okay for a few more days. Unlocking the Mysteries of the 240 Headlight Step Relay These relays are rather special in that they have a latching feature. It solved that problem, but then heat melt damage would sometimes begin to occur in the relay plug. For a 1979-84 240, jump fuse circuit 5 to 7. I took the bulb out and took a chance by grinding off the one stubb and turning the bulb 180 degrees.
The good news is that either relay will work for any 240. And it is recommended to use rosin core solder for any electrical work. It's made with two easy to find. Commercial use and publishing at other websites of these items is prohibited. Thank you, thank you, thank you!!! It wasn't a current overload.
My 740 had poor acceleration and hard cold weather starting here in Minnesota. There is abolt on the bottom of the alternator that holds the alternator to the engine. It is a vertical, narrow rectangular panel … with a latch or release at the bottom. It blinks at normal rate, not fast like I mentioned in first post. Thanks in advance, wonderful volvo people! Had hard wire the passenger parking and break lights and the driver side turn signal.
Here is what I did: I first changed the flasher, no change, still not working. Note - 4 Way always has voltage, and Turn signal is key switched for voltage. The bottom pin on the connector was somewhat deformed and I had to open it up a little with a pick and reinstall it, making sure the wire seated on the switch pin. I have always wondered whether the relay, which supplies a ground to the fuel injection, could have had high resistance contacts leading to the injectors not injecting a rich enough mixture so the engine ran lean? Then hook the battery back up and turn the car on. If this isn't clear, think of where you reach for the hood release. Parking lights and brake lights do work now.
Then you should coat the contact areas with a smear of anti-corrosive zinc paste. Then make sure they are snugged tight. The reason for this melting is due to slow corrosion of the power contact point in this plug. As it gets inserted, you should hear a 'click' which tells you it has locked into place. I can't be too sure, though, because I never paid attention to it and don't even know where it is supposed to be on the dash.
If you think this relay may have failed in your car, you may test by temporarily bridging pins 87 3 and 30 4 on the connector plug. The Modified Life staff has taken all its Volvo 240 headlight bulb replacement guide, Volvo 240 light bulb size guides, Volvo 240 light bulb replacement guides and cataloged them online for use by our visitors for free. After that I squirted it full of dielectric grease and worked the stalk around. Also, the hazard light switch does not work. If both wires leaving fuse box have current voltage , then taking a look at your 4 Way Flasher switch may be the next logical path. The hazards are still working, btw. I did a lot of web crawling before I found your site and can confirm there are lots of 740 owners with the same issues - most seem to spend a bunch on Fuel Pumps and Mass Air Sensors and just about everything else, often without success.
In these cases one will function as a Noise Suppression Relay and the other an Auxiliary Cooling Fan Relay. To complete installation, reverse removal procedure. At the price of factory Volvo harnesses. Heated front seats, Daytime running lights - relay Canada : 16A. Does anyone know what this might be? I really tightened down the grounds. One of mine fell off when I took the switch apart.