A/C problem

I have a 2000 cadillac escalade, The A/C keeps on blowing the 10 amp fuse in the fuse box. I have brought it to a place to have the system checked out, but they say everything is good except for the fuse blowing. They suggested bringing it to an electrician. Before I do that, does anyone have any Ideas why the fuses are blowing.

Thanks

 

Has to be one of two things, a shorted wire or excessive current draw. Either one is going to require tracking down circuits with a meter and a wiring schematic. Any decent repair shop should be able to track it down.

And since there are people who might suggest it, a caution to refrain from sticking a bigger fuse in the holder.

 

You might want to check your owners manual to see if that's supposed to be a 10 amp fuse. I've seen as high as 25 amp fuses used in AC circuits. Also, is your blower motor making any noise? If the bearings are going bad it could cause too much draw and blow the fuse intermittantly.

 

I have had the vehicle since new, so these are the original fuses and the diagram calls for a 10 amp. The blower motor does not make any noises. I also noticed that I am getting a corrosive build up on the positive post of the battery. The battery is also new.

Thanks

 

Like tow said, it could be the wiring.

Your blend doors, mode doors, blower, control panel, are most likely all powered off this 10amp fuse. It is a small fuse though, most I've seen are 30amp for blower motor.

If any of these components are defective, it could blow the fuse.

 

Well, here is more info. I brought it to a repair shop, theyreplaced the following items. A/C compressor, New refridgerant, refridgerant oil, orfice tube, and an accumulator. The vehicle did ok (had A/C) for about 500 miles and then blew a fuse again and stopped working.

 

The shop should cover anything else that is wrong since they did not fix it right the first time.

 

thanks, HotinOKC

 

They still can't figure out whats wrong. They said they traced all the wires and could not find any shorts. They put another compressor in. One with a lower amperage. But it still acts as if it cutting in and out. it just doesn't blow the fuse now. could the inside cabin filter have anything to do with it not getting enough air. I am just taking stabs in the dark, since they can't figure it out and I am still without A/C and have made 3 trips to them to try and fix it. Any suggestions would be helpful. And they are not charging me, but it is still frustrating.

Thanks