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+--- Thread: Blower fuse keeps blowing (/showthread.php?tid=32090)
Blower fuse keeps blowing - Teddy - 02-10-2015
UEvery time I turn my heater blow on it blows the 30 amp fuse heard this is a common fault but can't seem to find the problem relay ? Or heater controls ?
RE: Blower fuse keeps blowing - Seb_Ryan - 02-10-2015
The fan seized?
RE: Blower fuse keeps blowing - Teddy - 02-10-2015
No heaters work for a split second then fuse blows
RE: Blower fuse keeps blowing - vincent1 - 02-10-2015
disconect the motor then turn on does it still blow? if it dosent blow i would change the motor as probably partly seized and drawing to many amps to start up
RE: Blower fuse keeps blowing - Teddy - 02-10-2015
Will try that's cheers
RE: Blower fuse keeps blowing - Teddy - 02-10-2015
Still keeps blowing ?
RE: Blower fuse keeps blowing - Toms306 - 02-10-2015
Theres a common plug that shorts under the dash, only seen it with dash out though so not sure what access is like.
Also pull the relay and check that's not been arcing and melting shit.
RE: Blower fuse keeps blowing - Teddy - 03-10-2015
Pulled relay out doesn't blow tried a different relay then blows again :/ stared doing it since I changed battery
RE: Blower fuse keeps blowing - vincent1 - 03-10-2015
next step i guess is to see if anyone has a wiring diagramme for the heating circuit failing that i wonder if you could rewire a new live to the heater control switch via a relay and fuse? or may have to find a auto electrician
is there anything else the 30 amp fuse feeds or it it just the heater
RE: Blower fuse keeps blowing - pug306driver - 03-10-2015
does the heater motor "squeeek" ??
RE: Blower fuse keeps blowing - Teddy - 03-10-2015
No motor doesn't squeak
RE: Blower fuse keeps blowing - Poodle - 05-10-2015
Sounds like a short to earth.
RE: Blower fuse keeps blowing - pug306driver - 05-10-2015
so, disconnect motor and try, does it still blow fuses.....no, then all ok up to heater motor probably.
re connect heater motor and re try, blows fuses now?? then motor has a problem......30A is a lot of current
I have been told thru this forum that the heater motor is reasonably easy to remove ??
does the motor make a vibrating type noise ( dry bearing just like our computer chip fan motor when it first starts up, noise goes after a minute or two, its the motor bearing as we can see the fan rotating quite slowly at first then spins up, must take it off and lube or bin and fit new one ) and does the motor armature have slack bearings??
RE: Blower fuse keeps blowing - Magenta Sunset - 05-10-2015
(03-10-2015, 10:28 AM)vincent1 Wrote: next step i guess is to see if anyone has a wiring diagramme for the heating circuit failing that i wonder if you could rewire a new live to the heater control switch via a relay and fuse? or may have to find a auto electrician
is there anything else the 30 amp fuse feeds or it it just the heater
pre or post April 1987? (I've a Haynes handy here)
RE: Blower fuse keeps blowing - jjenn20 - 12-10-2015
My relay blew for the heaters so I changed it and they still don't work ??
RE: Blower fuse keeps blowing - maxzy - 13-10-2015
My 6 with the A/C found this problem, When turn on A/C and magnetic clutch operate, The fuse always melt that cause to blower inoperate
After checked, Found the magnetic clutch field coil internal short circuit.
RE: Blower fuse keeps blowing - Teddy - 03-11-2015
Sorted was heater control panel