P1406 and P0108 codes..

My 96 LSS is throwing these codes. I have notices sometimes when I accelerate it will have a couple hiccups.
Can I clean the EGR valve with carb cleaner?
Whats the other code usually?

P1406 is a pintle position error.....meaning the feedback of the position sensor is not the commanded position(need a scan tool to verify)....

The other is the MAP voltage is too high....

How is the vehicle running?

The car is running decent. I have really only noticed some hesitations randomly during acceleration sometimes.
Today I cleaned the EGR with carb cleaner and the harness connections with elec cleaner.
I also sprayed the MAP with elec cleaner as well as cleaning the MAF with MAF cleaner.
I drove it around the block and drove fine but will have to drive a little more to make sure the prob is gone. I bought a new MAP just in case but have not put it on yet.

Any ideas?

No , that didn't fix it. Still hesitates occasionally when accelerating. I guess I will next try putting in the new MAP sensor and see if that does anything.

Put in the new MAP sensor and seems to drive better on a short test drive. Will find out tomorrow when I attempt a 60 mile commute

well it is running better but not completely fixed. the hesitations seem to be less and is idling better but there is still something wrong

Did you clear the codes? Did any return?

Is the hesitation a misfire?

It also might be time for a new air filter, fuel filter, and upstream H20 sensors.

Ambient air->Air filter->MAP->ENG->H20 sensors->Exhaust

After I put the new MAP sensor on and after driving a while the light went off by itself and then later came back on. I got the codes checked at autozone and I think they cleared them.
I am not sure about a misfire. I can't hear any think come from the engine .... like a noise.
As I accelerate it will just do a hiccup in acceleration then go back to normal. Any way I can tell. I have replaced all my plugs and wires within 20k miles ago.
I will try to put on a new air filter and see if that helps. I changed the fuel filter 10K miles ago.
Where are the upstream H2O sensors?

Put new air filter in and still the same....