#1
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Cooling fan wiring.
I am confused. Again. In my haynes sierra manual it shows a thermostatic switch that gets fed from a relay that drives the fan. What I can't work out is where the switch is. It looks from the manual to be a dual switch, each switch element switches a single fan. I would only need one as my car will only have a single fan. Anyone got any guidance on this? I assume the two switches close at different temperatures?
I am concentrating on my cooling system now, I am waiting for a propshaft but want to get the cooling system fully done before it goes out for it's first drive. Best and all that, Enoch |
#2
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Front of the thermostat housing on the left front of the engine.
Just wire up the one that switches first ( sorry don't know which pair that is) TT
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You only get a woosh with a dump valve Build Thread Man Cave Mantiques Cecil Street Auto Repairs Garage Carlisle Build Cost £4181.65 - Last - Wheel Cylinders |
#3
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Thanks matey, I thought that was a sensor used by the ECU for some reason.
I will heat it up with a heat gun and see which comes on first and use that one. |
#4
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You will need to get it over 110c IIRC..
The ECT for the ECU is a two pin device, craftily hidden round the side under tha manifold IIRC.. it should have the guage sender next to it ( a single threaded connector ) TT
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You only get a woosh with a dump valve Build Thread Man Cave Mantiques Cecil Street Auto Repairs Garage Carlisle Build Cost £4181.65 - Last - Wheel Cylinders |
#5
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I think you recall correctly. I just went and had another look. I am not going to run it again now until I have coolant in it so need to get on with my plumbing now. I am trying to figure out how to get video off my DV camcorder on to my pc so I can mail some footage of the engine running as it is and then my first trial run. Another thing to learn
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#6
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Just as an update for anybody in the same position - the two black wires supply the two switches within the unit with +12. If you are running a single fan you can wire the other two wires together ( black / red and black / blue on my car) so the switches are in parallel. It does not matter which one closes first that way as either switch will turn the fan on. simplez.
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#7
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Dam, thought you could tell me which goes 1st....
TT
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You only get a woosh with a dump valve Build Thread Man Cave Mantiques Cecil Street Auto Repairs Garage Carlisle Build Cost £4181.65 - Last - Wheel Cylinders |
#8
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Oh... If your running a twink, swap that switch for an escort deisel one ( sorry don't know exactly which ) as it's low cutin is lower than the twinky, less chance of overheating a small rad.
TT
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You only get a woosh with a dump valve Build Thread Man Cave Mantiques Cecil Street Auto Repairs Garage Carlisle Build Cost £4181.65 - Last - Wheel Cylinders |
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