no havent checked the maf...i just took the whole duct work off as one piece...but i did have trouble with the map sensor that bolts to the upper plenum...dropped one of the screws and couldnt find it...is only on with one screw if that could make a difference...i,ve had to put it on the back burner for now until i get some free time
Make sure your MAP sensor is making a good seal. When I did the manifold gaskets on my Buick my MAP sensor got damaged and I was having the same problem that you are. I put in another MAP sensor and that cured it.
just waiting on new o-rings and sleeves to come from napa in the morning....i hope that helps...getting on my nerves...i dropped one of the map sensor screws to the manifold...maybe i can find one at the junkyard tomorrow
its running good now...i guess it was the fuel injector o-rings...now i have a small coolant leak on the little pipe thing in front of the valve cover...gonna pull it and try to fix it when it cools down