How do I Turn on the fan override switch?
Using the wire stripper, strip 1/4″ from the end of the green wire going down into the engine bay away from the fuse box. Look closely at the diode and note that one end of the diode has a white stripe on it. That end is the cathode. The other end is the anode.
How to manually turn on the engine fan?
Installing a fan override switch to manually turn the engine fan on. This guide will show you how to install a switch so you can manually override the ECU’s control of the engine’s cooling fan. This can be useful in several cases. Firstly, the ECU will not turn on the fan itself until the engine is quite a bit over the normal operating temperature.
Do you need an ON / OFF switch for a fan?
Get an on/off switch. Don’t get a momentary contact switch or some other off-the-wall switch and expect it to work. Some butt connectors for the wire. You’ll need 2 red ones and a blue one but buy more in case you mess one up. 2 or 3 terminal connectors to connect the wires to your switch.
When to remove solder from a fan override switch?
After about 3 or 4 seconds, touch the solder to the wire and lead. It should liquify and run across them. Remove the solder and iron immediately and don’t touch the wire for 20 seconds or so, to allow the solder that melted to it to harden.
Using the wire stripper, strip 1/4″ from the end of the green wire going down into the engine bay away from the fuse box. Look closely at the diode and note that one end of the diode has a white stripe on it. That end is the cathode. The other end is the anode.
Installing a fan override switch to manually turn the engine fan on. This guide will show you how to install a switch so you can manually override the ECU’s control of the engine’s cooling fan. This can be useful in several cases. Firstly, the ECU will not turn on the fan itself until the engine is quite a bit over the normal operating temperature.
Get an on/off switch. Don’t get a momentary contact switch or some other off-the-wall switch and expect it to work. Some butt connectors for the wire. You’ll need 2 red ones and a blue one but buy more in case you mess one up. 2 or 3 terminal connectors to connect the wires to your switch.
After about 3 or 4 seconds, touch the solder to the wire and lead. It should liquify and run across them. Remove the solder and iron immediately and don’t touch the wire for 20 seconds or so, to allow the solder that melted to it to harden.
Why does the engine fan keep coming on and off?
The engine fan will only stay on for a few reasons. Mosf of the time the fan clutch solenoid is bad. It is an electric solenoid that turns the fan on and off. You can find it by following the air line that comes from the fan clutch hub. In you case, it may be the A/C high or low pressure switch since you are getting an A/C trouble code.
How many rectifier connectors does a fan override switch need?
If your switch has standard blade connectors on it, pick up a pair of red female terminal connectors. If you’ve got a switch with an LED in it, it likely has 3 connectors. Otherwise it will have 2. 1 rectifier diode rated for at least 1 amp at 12V.