delayed shutoff
#1
delayed shutoff
i just installed an adjustable thermostat for my efan today, it works great. Its nice not having to deal with a toggle switch anymore, BUT now the car takes 2-3 to shutoff after i take out the key. i wired the thermostat to the trailing coil. is there a better place to hook it up??
#6
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Joey, You know better. Think about it. The No. 1 water temperature switch (back of the water pump) switch is "on" when cold to supply power to the choke cable electro-magnet so the **** stays out when pulled. It turns off when the coolant warms and releases the choke cable magnet (the **** pops in), right?
#7
Stu-Tron Get Yo Groove On
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i just installed an adjustable thermostat for my efan today, it works great. Its nice not having to deal with a toggle switch anymore, BUT now the car takes 2-3 to shutoff after i take out the key. i wired the thermostat to the trailing coil. is there a better place to hook it up??
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#8
im a noob when it comes to electrical work so bear w me
i probably did it wrong but i just went w the diagram it came with
so..the (pontiac fiero) Efans ground wire is bolted down to the chassis and the power is straight to the adjustable thermostat, then i wired the thermostat to the + side of the trailing coil.
i probably did it wrong but i just went w the diagram it came with
so..the (pontiac fiero) Efans ground wire is bolted down to the chassis and the power is straight to the adjustable thermostat, then i wired the thermostat to the + side of the trailing coil.
#9
Stu-Tron Get Yo Groove On
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im a noob when it comes to electrical work so bear w me
i probably did it wrong but i just went w the diagram it came with
so..the (pontiac fiero) Efans ground wire is bolted down to the chassis and the power is straight to the adjustable thermostat, then i wired the thermostat to the + side of the trailing coil.
i probably did it wrong but i just went w the diagram it came with
so..the (pontiac fiero) Efans ground wire is bolted down to the chassis and the power is straight to the adjustable thermostat, then i wired the thermostat to the + side of the trailing coil.
Use the 12v from the coils as a trigger. then run a ground for the relay, and a power in and power out on the relay. Power in from the battery, power out to the fan, relay ground to a ground on the car or the negative post on the battery. The Fan itself should get the power from the out on the relay and ground from the body of the car.
You can also run the signal in line with a switch, but you said that you have a thermostat.
#10
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Power for thermostat should come from + coil terminal. Out from thermostat should trigger relay. Relay has 4 terminals. Marked 85, 86, 87 and 30. 85 goes to ground. 86 is the trigger (from thermostat). 87 comes from Battery positive terminal. 30 is 12V out to fan. Fan ground wire goes to chassis or Negative battery terminal. The wire from the battery to the relay should be same size or larger wire than the power wire into the fan. Good idea to put a fuse in that line also. 12V relays are available at most Auto parts and electronics stores. Relay and fuse need to handle at least 30 amps, 40amp is what I use. Too lazy to take a picture, but here's a scan of a relay.
#11
Stu-Tron Get Yo Groove On
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Power for thermostat should come from + coil terminal. Out from thermostat should trigger relay. Relay has 4 terminals. Marked 85, 86, 87 and 30. 85 goes to ground. 86 is the trigger (from thermostat). 87 comes from Battery positive terminal. 30 is 12V out to fan. Fan ground wire goes to chassis or Negative battery terminal. The wire from the battery to the relay should be same size or larger wire than the power wire into the fan. Good idea to put a fuse in that line also. 12V relays are available at most Auto parts and electronics stores. Relay and fuse need to handle at least 30 amps, 40amp is what I use. Too lazy to take a picture, but here's a scan of a relay.
+1
#13
Lives on the Forum
The fan controller I got was a "relay-less" unit. I also drew current from one of the coil positive posts, and I also had a slight delay in shutdown as described. But this only happens when I shut down with the fan running (it doesn't run very often).
I consider it to be a minor nuisance, and not worth trying to "fix".
I consider it to be a minor nuisance, and not worth trying to "fix".
#14
weak minds wear the crown
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if you're like me and need visual diagrams and what not this will help, but these guys seem to have it all covered. anyways i used the second diagram in this page and works great, it explains the differences between the two diagrams so you can choose which will work great with your set up
http://www.aaroncake.net/rx-7/efaninstall.htm
http://www.aaroncake.net/rx-7/efaninstall.htm
#15
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I know its crude at best, but heres a simple diagram. Basically the idea behind the relay is to use the trailing coil + to send a signal that the fan needs to come on, but have the fan actually draw the power from the battery. I personally wire anything that draws over .5 amps through a relay. the pin numbers are identical to a standard bosch 5 pin relay, which is what you should use.
Last edited by slow5oh; 04-14-09 at 02:52 PM.
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#18
I know its crude at best, but heres a simple diagram. Basically the idea behind the relay is to use the trailing coil + to send a signal that the fan needs to come on, but have the fan actually draw the power from the battery. I personally wire anything that draws over .5 amps through a relay. the pin numbers are identical to a standard bosch 5 pin relay, which is what you should use.
nice..thank you!!! but now where does the thermostat hook up to? it has 2 male plugs. one for the +fan and the other for a 12v
#19
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Originally Posted by 74RX4
Power for thermostat should come from + coil terminal. Out from thermostat should trigger relay. Relay has 4 terminals. Marked 85, 86, 87 and 30. 85 goes to ground. 86 is the trigger (from thermostat).
Wiring like the diagram would cause the relay to turn on the fan any time the ignition was turned on. You want the thermostat to stop and start the power from the ignition switch (+coil) so it turns the relay/fan on and off at the appropriate temperature.
#20
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Wire for 12v goes to + terminal on coil. Wire for +fan goes to terminal 86 on relay.
Wiring like the diagram would cause the relay to turn on the fan any time the ignition was turned on. You want the thermostat to stop and start the power from the ignition switch (+coil) so it turns the relay/fan on and off at the appropriate temperature.
Wiring like the diagram would cause the relay to turn on the fan any time the ignition was turned on. You want the thermostat to stop and start the power from the ignition switch (+coil) so it turns the relay/fan on and off at the appropriate temperature.
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Ok so i have a question. Soon installing e fan in an SA, and am wandering if i can still get signal for aux 12v from the trailing coil. I hear (but am not sure) that the trailing ignition is turned off at times in an SA. Any e fan SA owners out there, if so hows it wired up?
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Jeff20B
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