Boost problems

[RubEric at aol.com]

Are you getting an engine check light??
I had a similar sounding problem on my 84 Olympic; boost was limited, engine 
check light would flash and performance was nothing.  No starting problem, 
however.
I suspected a faulty knock sensor and ordered a replacement. While waithing 
for the part, I cleaned the sensor electrical connections (located in a 
bracket on the firewall on my car)  and the problem went away.
Most of the electrical problem on my car have been associated with 
dirty/corroded connectors so my first course of action is to clean all 
associated connectors. 
Eric
84 Olympic
95 S6