a/c question

My a/c is on the fritz again this year and ive already narrowed it down i just have a simple question. i have a 1992 oldsmobile 88 and everytime i put a new relay in for the a/c it works for about 2 minutes and blows the relay. Could a bad ground cause that? or what would?

thanks
jay

Just a guess, the reason why the relay blows is probably because the blower motor is drawing too much current and is buring out the relay. Do you have a manual or electronic climate control in you car?

idk what i did i changed the relay with a random one thats not made for it out of my parts car and charged it and the ac works fine now

btw i pulled the relay right next to the ac relay out of my parts car becuase i already took the a/c relay out

You really shouldn't just exchange relays because they look the same the load ratings may be way differant ect. same coil but contact ratings can be 10 amp/15 amp,25 amp and still look identical,go by part # only.