Electrical Help

[Paul Shepherd]

Hi everyone
this is probely pretty basic for anyone with some electrical knowledge
the fuse that my air conditioning is on works ok when driving normally but give it a bit of stick and the fuse blows...does anyone have any ideas please

[Bob Kontak]

I had to look in the Wiki dictionary to understand "Give it stick". It means to abuse it - to beat it. Cool.

At first I was thinking your voltage regulator is bad. Under high RPM's the alternator may be generating too much voltage and blows the fuse - don't know if amperage is increased in this scenario. Also not sure how many amps it takes to hold in the ac clutch. If it is a big draw the perhaps 14 - 16 volts (vs. 13 or so) is enough to blow the fuse. Test is simple. Test voltage across the battery terminal when idling. If it varies more than one tenth volt the v-reg is bad. Mine varied a volt an a half before being replaced.

Another school of thought is that under acceleration wires can move and may cause a short. You may have a wire that is rubbed bare and touches ground only when accelerating. Check the main wire that feeds the a/c clutch.

[Paul Shepherd]

thought I would post an update to this problem.
I had put it in the to hard pile and just did not use the a/c. I have also had a broken seat switch that I replaced last weekend and it seems to have solved the problem with the a/c.
The old switch once removed and shaken had a few loose parts inside that I think where shorting out as the seats are on the same fuse as the a/c.