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[digital69]

Hi all, My car is Opel Omega B 2.5 Estate.  I was driving with the a/c on and suddenly the dashboard instruments went off.  Later, I discovered that the compressor bearing is packed up, I changed the compressor; though with a used one from another car.
Now, anytime I switch on the A/C to regass, a 30 amps fuse in the fuse box below the Steering (which I believe controls the dashboard instruments) blows and the a/c trips off.

Pls can anybody help me out and tell me what to do.

[freecall666]

have you checked the motor that you changed. the replacement motor may have a fault. if you un plug it dose it still blow the fuse?

[Andy B]

have you checked the motor that you changed. the replacement motor may have a fault. if you un plug it dose it still blow the fuse?

The a/c compressor is belt driven ....... it's not a motor. 

[freecall666]

have you checked the motor that you changed. the replacement motor may have a fault. if you un plug it dose it still blow the fuse?

The a/c compressor is belt driven ....... it's not a motor. 

oh only seen electric one's, not on mig then

[Andy B]

have you checked the motor that you changed. the replacement motor may have a fault. if you un plug it dose it still blow the fuse?

The a/c compressor is belt driven ....... it's not a motor. 

oh only seen electric one's, not on mig then

No  Bottom pulley on the near side on a V6 

[freecall666]

have you checked the motor that you changed. the replacement motor may have a fault. if you un plug it dose it still blow the fuse?

The a/c compressor is belt driven ....... it's not a motor. 

oh only seen electric one's, not on mig then

No  Bottom pulley on the near side on a V6 

nice to know must be a bad wire or a relay at fault then, dose it only blow fuse when you put A/C on or dose any thing els blow the fuse?

[digital69]

It only blows fuse when I switch the a/c on. Is there any way I can test the system without using the compressor?

[freecall666]

there is a relay that maybe at fault, and is in the glove box dont know the number think its on the left side at the bottom end of the relays. should say on the lid witch one it is.
http://opeloem.com/vauxhall/omega_1994_2003/electrical/body/air_conditioning_relay.html

[freecall666]

have just been reading up on mig A/C, says there is a relay for the A/C clutch. and if this is dirty or seized the fuse will continue to blow. if it is clean then it would be the clutch its self, as these can become seized. but with out the relay in it will stop blowing the fuse. 

[Kevin Wood]

Does the car have climate control or the manual heater controls? also, what year and engine spec?

Is the fuse blowing whenever the climate and / or fan are switched on or specifically when the air conditioning is used / it's taken out of ECO mode?

What fuse number is blowing?

[mantahatch]

First time I changed an AC compressor I managed to trap the wires from it. I trapped them in/under the pipe connector when reconnecting them.

Simple, stupid mistake by me, but worth checking.

And it blew the fuse everytime I turned it on.

[mantahatch]

Have you fixed it ?

[digital69]

Not yet fixed.  Tried the suggestions but nothing positive. New suggestions are welcomed.
 

[Kevin Wood]

As said, does the car have climate control or a manual heater, which 30A fuse is blowing and exactly when does it blow?

[Vitaliy]

One thing you should try is to disconnect A/c compressor plug and Condenser fan( thats the fan that sits in front of the rad). Than switch a/c on. if it blows again you have wiring problem, if not one of the 2 things have gone wrong. You could change your a/c clutch from your old compressor. Fan is tested with 2 wires from connector to the battery. If it goes its ok, if cables spark violently and no movement from fan is noticed than fan is gone.