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Q:

responding to autotechpat on 7/24/2009 on 1998 Plymouth Voyager

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
should map be replaced or cleaned? as a layman can I do this?
(1) Answer
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The 2.4 liter, 3.0L and 3.3L engines that year all use a Manifold Absolute Pressure Sensor (MAP) which is not cleanable. To test it an oscilloscope is used to moniter and look at smooth voltage change as the throttle is increased/air entering the engine is increased. A better scan tool can read the volume of air entering the engine in grames per second and give a voltage change reading or the sensor as the van is driven.