Code 34: MAP sensor

[bbeck]

My beretta keeps throwing a code 34 even after swapping out map sensors and unplugging the MAF. What could be causing me this problem? I checked for vaccuum leaks with no luck, I even replaced the upper intake maniflod gaskets to cover that possibility. Any ideas? It is also running rich and I have noticed a decrease in mileage.

[no_doz]

have you had the code reset?

[bbeck]

it was cleared between each try. Is it possible that I got a faulty map sensor to try? Is there any way to test them? I checked the voltage going to the maf and map according to what I found online, and they were good. 12 and 5 volts at certain wires.. What's the best way to find a vacuum leak? My vents and defrosters all work correctly at the designated selectors.

[no_doz]

that is a definite possibility, find out what resistance the sensor should have at atmospheric pressure & test it to see if its where it is supposed to be.

[bbeck]

well, I viewed the voltage on the scanner while it was running. I don't remember what it was at though.. I'll have to check again the end of this week. I'll see what I can get with the multi-meter if I get a chance today.