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Thermo Fans

Boof

By Boof,
in Classic & Vintage (1950's-1980's)

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Boof Mentor

Boof

Posted
Posted (edited)

RIGHT :D After fixing my fuel leak under ze car, i started it up, only to find the thermo's ARNT working :D Found some wiring had been melted (obviously shorted out somewhere), cut it all out rewired it all retaped it all, all good....Just started it back up then to find that they ARNT working STILL :) (starting to get really sick of this car think it'd be easier with a newer one)

Does anyone know which relay in the fuse box controls the thermo fan side of things?? Has anyone had this sorta issue before??? Before you ask YES i've checked the fuses and NO there's nothing wrong with them!!!

bloody car!! lol

Edited by Boof
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Matty T Collaborator

Matty T

Posted
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Is this in a DR30? (Sorry if I am not up to speed :( )

I had the same issue - thermos not working. Actually, the thermos would come on when I turned the ignition on (for a couple of seconds), but wouldn't kick in when the engine got hot. It turned out to be the thermo fan water temp sender (in the bottom radiator tank) was faulty. A short jumper wire and some electrical tape...hey presto! Got fans!

I can't remember exactly, but I think that the fan relay (in the fuse box) is the same one as the fuel pump. I can check it out this evening - I have labeled some of it in English.

RIGHT :) After fixing my fuel leak under ze car, i started it up, only to find the thermo's ARNT working :( Found some wiring had been melted (obviously shorted out somewhere), cut it all out rewired it all retaped it all, all good....Just started it back up then to find that they ARNT working STILL :wave: (starting to get really sick of this car think it'd be easier with a newer one)

Does anyone know which relay in the fuse box controls the thermo fan side of things?? Has anyone had this sorta issue before??? Before you ask YES i've checked the fuses and NO there's nothing wrong with them!!!

bloody car!! lol

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Boof Mentor

Boof

Posted
  • Author
Posted
Is this in a DR30? (Sorry if I am not up to speed :thumbsup: )

I had the same issue - thermos not working. Actually, the thermos would come on when I turned the ignition on (for a couple of seconds), but wouldn't kick in when the engine got hot. It turned out to be the thermo fan water temp sender (in the bottom radiator tank) was faulty. A short jumper wire and some electrical tape...hey presto! Got fans!

I can't remember exactly, but I think that the fan relay (in the fuse box) is the same one as the fuel pump. I can check it out this evening - I have labeled some of it in English.

Yeah mates it in a DR30!!

Yeah that'd be GREAT if you could check what relay it was (stupid japenese on the fuse box lid) im going to try to bridge out the wiring tomorrow and see what happens!

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Matty T Collaborator

Matty T

Posted
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Sorry, couldn't help you. I haven't labelled the fan relay (if there is one).

The car is away (getting straightened/strengthened) so I hope to find some time to properly label what I can. I'll take a picture when done.

If you still have a DR radiator - on the rear of the lower radiator tank, on the driver's side, is the thermo fan temp sensor switch. If you unplug it and check with a multimeter, you should have 12+ volts when the engine is running. Alternatively, bridge it with a short piece of wire, then start the car. The fans should come on.

Sorry that I can't really help you more.

Yeah mates it in a DR30!!

Yeah that'd be GREAT if you could check what relay it was (stupid japenese on the fuse box lid) im going to try to bridge out the wiring tomorrow and see what happens!

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Boof Mentor

Boof

Posted
  • Author
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Sorry, couldn't help you. I haven't labelled the fan relay (if there is one).

The car is away (getting straightened/strengthened) so I hope to find some time to properly label what I can. I'll take a picture when done.

If you still have a DR radiator - on the rear of the lower radiator tank, on the driver's side, is the thermo fan temp sensor switch. If you unplug it and check with a multimeter, you should have 12+ volts when the engine is running. Alternatively, bridge it with a short piece of wire, then start the car. The fans should come on.

Sorry that I can't really help you more.

Nah mate your right thanks for your help!! IF you get around to taking a photo of em justs PM me or something along those lines!!!

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