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Thermo fan Conversion 

 

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 Post subject: Thermo fan Conversion
Posted: Wed Jul 07, 2010 3:20 pm 
Tyre Shredder
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Ride: Ford Falcon XG

Location: Bendigo
VIC, Australia

Hi All,

I am about to tackle thermo fan conversion and serpentine belt conversion down the track but just need to clarify a few things before i start. ive tried sifting through search info but still seems unclear to me.

Ive got an EL XR ECU which is an auto, is this required to be installed to run thermos or will they run off current ECU. Also with resistor trick, from what i understand its 7.5Kohm between pin 30 and pin 46.Firstly is this correct? and are ecu pins just counted out left to right or whats the best way to located these pins?

Sorry for the noob questions just wanna get it clear.

Dan
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 Post subject: Re: Thermo fan Conversion
Posted: Wed Jul 07, 2010 10:44 pm 
Technical Contributor
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ECU pins are numbered in the big grey plug that goes into the computer... Not sure whether numbers are on the bottom or under the red retainer that clips into the back... Can't remember now...

If you wish to trigger fans of a computer then yes an EL computer of any sort is required to control EL fans (EF fans are different)

Wiring is something along the lines of this for 2 speeds (EL ECU)...
Attachment:
EL Falcon Thermatic Fan Wiring.pdf [72.62 KiB]
Downloaded 389 times


Can't help you with resistor values though as I went for the J3 chip route and had my computer changed to manual...

Cheers,
Tim

 

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93 Red ED 5spd Manual Build Thread

Performance: Complete AUII VCT Wiring & Power Train, Pacey Headers, 2.5" Exhaust, Exedy Clutch, DBA Rotors
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 Post subject: Re: Thermo fan Conversion
Posted: Wed Jul 14, 2010 10:07 am 
Tyre Shredder
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Joined: 5th Feb 2009

Ride: Ford Falcon XG

Location: Bendigo
VIC, Australia

After attempting to install thermos into an XG ive realized an issue i have regarding the differences between EEC-IV ECU currently runs it and EEC-V ECU thats required. In followed AFF write up using tridon thermatic switch.

Am i going to have to convert to EEC-V or is there another way of doing it? Is EEC-V required when using Davies Craig kit?

Cheers
Dan
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 Post subject: Re: Thermo fan Conversion
Posted: Wed Jul 14, 2010 11:49 am 
Technical Contributor
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Power: 133 rwkw

Location: Leeton
NSW, Australia

Hi,

You have two options, the way I went where I will use the EEC-V to trigger the fans...

Or...

You install a thermatic switch to trigger the fans...

The EEC-IV does not has thermofan triggering capability... So one of the two above mentioned methods must be used...

If you go with an EEC-IV computer you will need to have it J3 chipped to suit the log manifold, or you convert to BBM at the same time...

Cheers,
Tim

 

_________________

93 Red ED 5spd Manual Build Thread

Performance: Complete AUII VCT Wiring & Power Train, Pacey Headers, 2.5" Exhaust, Exedy Clutch, DBA Rotors
Visuals: FG XR Wheel, XR Front, 17's, BA 5 Spd Shifter, BA Ghia Window Switches, NL Cluster
Tunes: 8" Pioneer Sub, JBL Speakers, Clarion Double DIN Headunit

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 Post subject: Re: Thermo fan Conversion
Posted: Wed Jul 14, 2010 12:17 pm 
Tyre Shredder
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Posts: 376

Joined: 5th Feb 2009

Ride: Ford Falcon XG

Location: Bendigo
VIC, Australia

So basically... yes i will need to convert to EEC-V?
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 Post subject: Re: Thermo fan Conversion
Posted: Wed Jul 14, 2010 4:01 pm 
Technical Contributor
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Age: 28

Posts: 3705

Joined: 27th Sep 2006

Gallery: 20 images

Ride: ED Falcon

Power: 133 rwkw

Location: Leeton
NSW, Australia

Not if you run a separate switch to turn them on... If you run a tridon switch you can keep your EEC-IV...

Cheers,
Tim

 

_________________

93 Red ED 5spd Manual Build Thread

Performance: Complete AUII VCT Wiring & Power Train, Pacey Headers, 2.5" Exhaust, Exedy Clutch, DBA Rotors
Visuals: FG XR Wheel, XR Front, 17's, BA 5 Spd Shifter, BA Ghia Window Switches, NL Cluster
Tunes: 8" Pioneer Sub, JBL Speakers, Clarion Double DIN Headunit

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 Post subject: Re: Thermo fan Conversion
Posted: Thu Jul 15, 2010 12:38 pm 
Tyre Shredder
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Joined: 5th Feb 2009

Ride: Ford Falcon XG

Location: Bendigo
VIC, Australia

Thats a relief Timmy.id pretty much wired it all up but for some reason thought i required a EEC-v to run it all. It it will run without it that great, thanks for the advise.

Dan
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