As others have mentioned, that compressor may be too small to drive an
impact wrench. Harbor Freight has an electric impact for sale, which is
supposed to deliver 200# foot pounds. Just plug it in, and no compressor
needed. It's rather long, from back to socket so it won't fit in some
spaces.

For your application, how about a socket and a long breaker bar? Impact
wrenches do have the advantage of "rattling" which tends to break up rust.
With a breaker bar, you may need to heat up the nut.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
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how do the spec-s of an air impact wrench relate to the air
compressor?
i need to loosen a crankshaft pulley bolt that is torqued at 134 ft-
lb. on a 1998 honda civic LX. i have a sears craftsman 1.5hp 4-
gallon @90psi air compressor. i don't yet
have an air impact wrench. what should i look for in terms of psi
when i go to buy one, such that i can use that air compressor to drive
the impact wrench to loosen the bolt? tia.