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MG MGF Technical - Stumbled upon this

Stumbled upon this:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=9895&item=7907114489&rd=1

Two fuses and a sticker can help prevent HGF. Please enlighten me as to the philosophy behind this.
Colin Jeavons

LOL - I think I recognise the style of this ad ;o) ;o)

Colin, the idea is to prevent the failure of the under-rated radiator fan fuse: the radiator fan's start current can spike and exceed the rating of the original fuse - especially if the fan has been left unused for some period of time, leading to some sticking of the fan blades.

If the fan fails to come on upon demand, the car will over heat in standing traffic.

If the car overheats, then there is an increased risk of HGF.

Hence, if you follow the logic through, if you uprate the fan fuse, you can protect against HGF...
Rob Bell

The older standard radiator fan fuse is only 15 amp and has a tendency to 'blow' so you have no slow speed cooling (one of the possible causes of an HGF). A long time ago it was decided that an uprated fuse of 20 amps offers better protection - even MGR now fit this size.

Ted
Ted Newman

Beaten by the doctor!!

:-)

Ted
Ted Newman

My MY2000 has a 15A rad fan fuse and 20A condenser fuse: I guess the condenser is the air-con unit (which I don't have). Can I just change the fuses over?

Graham.
Graham Berridge

Why change them over? Just replace the 15A with a 20A from the spare fuse slot. ALthough I tend to agree with your thinking - no AC therefore no need for a condensor fuse ... but who really knows?
JohnP

Any more tech info, maybe from Germany LOL:-)
Johan Slagter

LOL nice one Dieter, I want to know how many bids you grt!
Will Munns

This thread was discussed on 24/06/2004

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