If you remove your air filter housing, you will then have access to the throttle body. The top section, which contains the air flow sensor (be VERY careful not to touch anything inside), can then be removed by disconnecting the wiring then loostening a single large hose clamp that attaches it to the intake. This is where you begin to clean...I used BGs spray intake cleaner.
Once it's real clean inside, reassemble everything. That done, turn the ignition key to the "on" position, but do NOT start the car...leave the key on for 30-45 seconds and you will hear some loud clicking noises, which is the car re-setting its throttle butterfly (as I understand it).
Please let us know if this works, and good luck!
"If everything seems under control, you're simply not going fast enough" --Mario Andretti
1995 E500 street car
1986 Porsche 944 Turbo S track car