map sensor

i have a 1988 olds ninty-eight regency, it has developed a stumbling,hesitation problem. i get a code 34 from the obd, some haynes manuels state that this is a map sensor. i cannot physically locate the map sensor on this 3800 engine. please help.

This is a MAF sensor code...

thanks Bill, the maf was replaced about 18 mnths ago, i thought it was bad, i had another problem, the car kept stalling completely, turns out, it was a short at the harness toward the back side of the engine. does this car have a map sensor, if so where is it located???