I've got an 88 Lo3 and I got a code 33 yesterday. The car is running good, but it's a stinkin'. Just went through a problem with the fuel pump and low fuel pressure and has since been replaced.
I kind of think that all that boging, hesitation, and running crappy
has something to do with the MAP sensor puking (overworked) so, I checked the connections and the vacuum line and everything is ok. U think I need a new one? Question is, does the engine run rich when the MAP bites the dust?