1998 D1 hooking up electric fans

2824 Views 5 Replies 4 Participants Last post by brain711, Mar 14, 2014

KShea_CT

Discussion Starter · Feb 15, 2014

Hi,

I've been reading this forum for advice on which D1 to buy, then bought a 1998 in September 2013. It has 116k miles and needed some work. The frame wasn't rusted and the engine/tranny seem good, radio comes on when it feels like it. The guy I bought it from installed two large electric fans behind the radiator and they run ALL the time. The good news is the engine never overheats, the bad news... it's 10 degrees outside and they are still running. Ha. My question is; where can I splice the power wire to the fans into the coolant temp sensor so the fans only come on when the temp exceeds 180 degrees and turns off at 170?

Much appreciated!

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p76rangie

· #2 · Feb 16, 2014

KShea_CT said:
Hi,

I've been reading this forum for advice on which D1 to buy, then bought a 1998 in September 2013. It has 116k miles and needed some work. The frame wasn't rusted and the engine/tranny seem good, radio comes on when it feels like it. The guy I bought it from installed two large electric fans behind the radiator and they run ALL the time. The good news is the engine never overheats, the bad news... it's 10 degrees outside and they are still running. Ha. My question is; where can I splice the power wire to the fans into the coolant temp sensor so the fans only come on when the temp exceeds 180 degrees and turns off at 170?

Much appreciated!

You get something like this Davies Craig Adjustable Thermo FAN Switch DC 0401 | eBay.
The sensor slips in the top radiator hose where it clamps onto the radiator. You then run the trigger wire for the relays running the fans through this switch. The switch is adjustable so that you can have the fans switch on at what ever temp you want

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pavel

· #3 · Feb 16, 2014

Flex-o-lite sells a controller for its twin fans that we have in our '96 D1. The sensor simply pushes into the cooling vanes near the top left of the radiator. It works well and has some good features - the fans don't run when the starter is engaged or when the AC fans are on. The controller keeps the fans running for a short while (usually about 20 seconds) after the engine is shut down so there should be no spike in water temperature.

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brain711

· #4 · Mar 11, 2014

I just added efans to my D1.

Used the following to get 3400 CFM:

1 x Hayden Automotive 3653 Economy Adjustable Thermostatic Fan Control Link

1 x Derale 16765 Electric Fan Dual Relay Wire Harness Link

2 x CFR Performance 8" High Performance Electric Radiator Cooling Fan - Flat Blade 1700 CFM each! Link

1 x Aluminum sheet cut down for a shroud with a bend in it

1 x high temp rubber weather stripping to seal it up

I used an infrared thermometer to dial in the thermostat and it is working good

Now keep in mind there is an Isuzu diesel in my D1 and they do not warm up unless you are going up hill so YMMV on a gas engine.

Hope that helps

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p76rangie

· #5 · Mar 11, 2014

brain711 said:
Now keep in mind there is an Isuzu diesel in my D1 and they do not warm up unless you are going up hill so YMMV on a gas engine.

An Isuzu in a D1 would be very rare as the Isuzu is very old school. Good cruising motor, or should I say that the motor forces you to just cruise as it has no real performance.

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brain711

· #6 · Mar 14, 2014

p76rangie said:
An Isuzu in a D1 would be very rare as the Isuzu is very old school. Good cruising motor, or should I say that the motor forces you to just cruise as it has no real performance.

P76rangie ^ That is a accurate statement!

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