Glad to be of help. There is a service bulletin that may help.

See: http://www.quayle-co.com/tsbs/87-270.htm

CODE 34 (MAF SENSOR VOLTAGE LOW)

1. Inspect the plenum side of the throttle blades for deposits. If even a small
   amount of deposits are present, clean the throttle body per bulletin 87-100,
   section 6E.
   
2. Thoroughly inspect the vehicle for sources of air entering the engine
   without passing through the MAF sensor. Specifically, look for a cracked, cut or
   loose duct between the air meter and the throttle body, poor inlet runner to
   plenum or manifold sealing, a split PCV hose or any type of vacuum leak. A large
   quantity of air does not necessarily have to be involved. If any leaks are
   found, repair the condition, clear the codes and check if the code resets.
   
3. Check resistance of the MAF power relay contacts per bulletin 87-99, section
   6E. The resistance should be less than 1 ohm across closed contacts. If the
   resistance is greater than 1 ohm replace the relay.
   
4. Check the minimum air rate and compare to specifications found in bulletin
   87-100, section 6E. If the air rate is below specifications, please reset by
   connecting a vacuum gauge to port A on the throttle body, increasing the air
   rate by turning the minimum air screw until one inch of vacuum appears on the
   gauge and then reducing the minimum air setting by one half turn of the screw.