kbb.com will be a good place for you to find out that value on the 91 grand prix you can also do a search on autotrader.com see if you can locate a vehicle like yours. Remember the car is only worth what someone is willing to pay for it, but using these tools you can get a good idea how much to ask for.
what does the grand am have in it now
how to chang spark plugs in a 1992 Pontiac grand prix
15 gal
what specific sensors?
Michael Schumacher, World Champion in 1994,1995,2000,2001,2002,2003 and 2004 has won 91 Grand Prix, more than any other driver in history.
91
16.5 gallons.
the best fuel would be 91 octane or premieum.
The 1991 Pontiac Grand Prix oxygen sensor is located on the outside of the air filter housing. You will find the sensor on the back side of the air filter housing.
passenger side floorboad behind the relay panel in the dash
Use a minimum of 91. You can use less if you are in a bind but try not to boost and try not to run it hard until you have 91 or up in.
on the lower half of engine,on side of oil pan closest to the front of car. Usually has a couple bolts holding it on.