I have a 00 5sfe 5speed and the cooling fans do not come on at all. The wire that goes to the temperature sender at the bottom of the radiator is missing, so the fans used to run all the time. But not anymore. When i was getting my timing belt/water pump/ clutch kit installed, the mechanic told me that I could run a wire to the battery with a switch on it to power the fan. Just make sure the other wire is grounded. Anyone tried this? Would there be a parasitic loss in power from wiring directly to the battery?
cblinnen
I don't know all the details of your car situation but if it were my car (and I wanted to keep it for awhile) I'd try and properly fix the wire. By your description it sounded like the temp sensor wire is just missing? Could you see if it was ripped off and possibly part of it still exist? Normally the fans kick on when the radiator temp gets higher then a set point. So without a working temp sensor you might be accidentally doing damage to your engine. Maryland isn't necessarily a super hot climate but none the less I'd be careful.
If you want help with the wire if its still hanging around take a picture of it or something and post it here. Someone is bound to know how to properly wire it up.
If you want help with the wire if its still hanging around take a picture of it or something and post it here. Someone is bound to know how to properly wire it up.
except when it's 95 outside and you've left it running at the 7/11 to get a big gulp and the gauge shoots up and you're in the longest line you've ever seen cause the counter person can't be bothered to put paper in the pumps and everyone has to come inside to get their receipts.
do it correctly. usually the best course.
tony
do it correctly. usually the best course.
tony
I hear of people doing this all the time, but I don't see much of a purpose behind it. The time and energy would be better spent fixing it to work correctly, like Toyota designed it.
I have done it before, but it's on my motorcycle that only I ride, and the fan very rarely needs to be turned on, and it's kinda hard to find parts for.
If you really wanna hook it to a switch, use a relay. Fans draw a lot of current and you will have to use a heavy duty switch with heavy wiring otherwise. With a relay you can use a small, cheap rocker switch, with one small wire running to the interior. Do a some studying and learn how they work, if you think you might have a future modifying/adding accessories to your own vehicles they are invaluable.
You'll have two power wires, one going from the power source to the relay, and another from the relay to the fan motor. Another power wire from an ignition (key in on or ACC, position, radio/cigarette lighter are good sources) positive to the relay, and two ground wires, one from the relay the switch, and another from the switch to a chassis ground. This will make more sense when you understand how they function. There are almost always blank switch panels in the dash or console to mount switches in for a nice OEM look. My car has two in the center console near the parking brake and another below the dimmer dial. Your car is probably similar, but I'm not familiar with Gen 4's.
A link to the switches that I prefer to use:
http://www.parts-express.com/spst-automotive-round-rocker-switch-with-green-led-12v--060-772
A link to the relay:
http://www.parts-express.com/12-vdc-automotive-5-pin-relay-spdt-30-40a-bosch-type--330-073
Parts Express also carries all of the connectors, solder, etc. that you might need.
I have done it before, but it's on my motorcycle that only I ride, and the fan very rarely needs to be turned on, and it's kinda hard to find parts for.
If you really wanna hook it to a switch, use a relay. Fans draw a lot of current and you will have to use a heavy duty switch with heavy wiring otherwise. With a relay you can use a small, cheap rocker switch, with one small wire running to the interior. Do a some studying and learn how they work, if you think you might have a future modifying/adding accessories to your own vehicles they are invaluable.
You'll have two power wires, one going from the power source to the relay, and another from the relay to the fan motor. Another power wire from an ignition (key in on or ACC, position, radio/cigarette lighter are good sources) positive to the relay, and two ground wires, one from the relay the switch, and another from the switch to a chassis ground. This will make more sense when you understand how they function. There are almost always blank switch panels in the dash or console to mount switches in for a nice OEM look. My car has two in the center console near the parking brake and another below the dimmer dial. Your car is probably similar, but I'm not familiar with Gen 4's.
A link to the switches that I prefer to use:
http://www.parts-express.com/spst-automotive-round-rocker-switch-with-green-led-12v--060-772
A link to the relay:
http://www.parts-express.com/12-vdc-automotive-5-pin-relay-spdt-30-40a-bosch-type--330-073
Parts Express also carries all of the connectors, solder, etc. that you might need.
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