Joreysdad Posted January 19, 2011 Report Posted January 19, 2011 Hi all, hope someone can help me. I have a MK2 Galaxy 2.3 Ghia with climate. Had quite a few mechanical/electrical engine problems with her which have been sorted but latest one I'm not sure where to look. The heater fuse (30 amp) is melting when the fan is put on. Worked fine when I got her but she's been off the road for quite a while as things needed doing for MOT. Got it all done, started her up after she'd been sat at the garage and the fuse melted. She does leak (sunroof drain blocked) so water gets in and runs down the offside pillar filling up foot well, common problem I think, so I dried her out thoroughly using blow heater for two days but problem still there. Guessing it is probably the cause but now don't have a clue where to go from here. Also thinking fuse should blow - not melt lol. Fan works fine and is blowing merrily while the fuse melts. Any suggestions would be greatly appreciated :lol: Chris Evans Quote
bfc1001 Posted January 19, 2011 Report Posted January 19, 2011 ive no idea s pal but i had a mk1 gal 2.3 and it did exactly the same. the fuse always seemed to hold out for six months or so , as u said it seems to melt but not blow , then id change it and get another six months. if i remember it was the fuse for the rear heater in the bottom right of the fuse box. Quote
zorgman Posted January 19, 2011 Report Posted January 19, 2011 yes fuses do wear out, i know it sounds daft but try going up one fuse step ie if its 10a go to 15a Quote
sparky Paul Posted January 20, 2011 Report Posted January 20, 2011 It takes many times the rated current of a fuse to blow it quickly. Even if it is giving way after a minute or two, the circuit is taking over the rated current and it would be wise to determine the cause before any damage occurs to the wiring loom. It's possible that the fan motor winding insulation is failing, or the fan itself is seizing up... the increased load on the motor will increase the current draw from the supply. Quote
Joreysdad Posted January 20, 2011 Author Report Posted January 20, 2011 thanks for your advice and information guys - going to take out the motor and look at the wiring as a first step :) Quote
zorgman Posted January 20, 2011 Report Posted January 20, 2011 2.5 times for coarse type fuse to blow which is used in cars so a 10a takes 25a to blow as its melting slowly yes its taking to much current so get an ammeter onto it see what its drawing Quote
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