HOW MANY 02 SENSORS ARE ON MY HX CIVIC on 1997 Honda Civic

I HAVE 3 SENSORS MISSING ON MY CAR ALL THE O2 PLUGS ARE GONE AND WELDED SHUT. I JUST REPLACED THE MOTOR AND I WANT TO DO IT ALL CORRECTLY. I WANT TO ADD THE SENSORS THE WAY IT SUPPSSED TO BE AND ADD THE BUNGS WHERE THE HAVE TO BE. BUT I DONT KNOW MANY I NEED DO TO THE FACT I HAVE 3 PLUG ALL RIGHT NEXT TO EACH OTHER NOT CONNECTING TO ANYTHING.

by in Hialeah, FL on January 06, 2011
1 answer
ANSWER by on January 08, 2011
There are two oxygen sensors on a 1997 civic. One by the exhaust manifold and one after the catatylic converter.