I’m out of ideas with the AC on my 93.5 coupe : the AC clutch fuse keeps blowing, cutting the AC
the car is a 1993 V12 6.0L, with the Sanden compressor
the problem occurred a few times during the first years, but now the fuse blows almost immediately
I used a thermal fuse to replace the standard fuse, so I can diagnose the problem
when the AC compressor is running the AC works , makes some cold
when the AC clutch relay is activated, I measured 12A goping through, so it doenst look like a short to ground
the fuse is shared between AC clutch and air pump, and the air pump clutch seems ok : I took its relay out, and the fuse kept blowing, while the fuse is fine when taking the AC clutch relay out
I searched the forum for ideas, and couldn’t find anything similar
is it correct that the AC clutch coil should measure about 4 ohms ? pulling 12A would be like 1 ohm resistance , while I reckon a short in the clutch coil should make it 0
can I disconnect the said coil to isolate it from the rest of the circuit and measure it ? How can I disconnect the coil connexion ? I see the insulation over the wiring, but cant be sure there’s a spade connector under it (and I don’t want to damage the AC coil)
is iut possible to change the AC compressor clutch with the compressonr on the car ? or do I need to take the compressor off to be able to remove the clutch ?
any idea of anyhting which could explain de bloaw fuse ?
thanks in advace