Re: [doc] D on fire!

[John Tien <johntien99@xxxxxxxxxxx>]

Thanks for the reply Martin :)

I am not too sure how many fan fixes there are in the
DeLorean community, but from hearing what you said you
have made yourself... is it the same as this one from
SpecialTauto?

http://www.specialtauto.com/delorean-parts/modifications.html
(The Fan Fail Fix- in the middle of the page)

http://www.specialtauto.com/delorean-parts/images/Fanfixdiagram.jpg

I just had a thought on adding a computer type cooling
fan in the fuse compartment to give some good air flow
through it... is this what someone have done already,
or is it a bad idea on its own?

Thanks for everyone's reply to this thread!

Cheers,
John Tien
DOC 8
RHD 3046

--- Martin Gutkowski <martin@xxxxxxxxxxxxxx> wrote:

> Bad luck, John, but well done.
> 
> The cooling fan system comprises three quite serious
> design flaws.
> 
> 1) The fans can draw more than 20A each on startup
> and the relay is only 
> rated at 40
> 2) The circuit breaker can cycle if it's getting
> tired or has dirty 
> connections. This can make things a lot worse as
> it's on startup that 
> things are hit hard
> 3) The fan-fail module, but we all know about that
> by now.
> 
> There are various fixes on the market - John
> Hervey's "Fan Fix" (Not 
> what you've got, John, and I think Hervey would be a
> bit miffed at the 
> suggestion that his catches fire!) which is
> basically a big relay, and 
> Bob Zilla's Fan Zilla which is a clever solution but
> not implemented 
> very well.
> 
> I wasn't happy with the fixes on the market so I
> came up with my own.
> 
> 1) I bought two relay sockets and two relays with
> integrated blade fuses.
> 2) I pulled a signal from the mode switch rather
> than from the compressor
> 3) I made myself trailing plugs for both fan sockets
> (original fan fail 
> and relay)
> 
> The net result is that I now have one fan running
> off each relay, fused 
> at 15A, and when the AC is on, they run continuously
> (and over the past 
> weekend, this has been for several hours at a time)
> and the current 
> bypasses the circuit breaker.
> 
> With the aid of a couple of diodes, you can make the
> "Cooling Fan Fail" 
> light come on when the fans are on, and personally I
> find it very 
> comforting. You can even stick some insulating tape
> over the word "Fail" 
> but I haven't gone as far as that :-)
> 
> Best Wishes
> 
> Martin


            
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