My Zetec shows a minimum TPS of 17.6% and a minimum MAF of 0.177 #/minute when the engine is not running. A Duratec that I recently examined showed a minimum TPS of about 18%. I think this must be normal.
  Perhaps the scaling of the TPS range supposes that 0% would be completely closed, so that no air at all can go through â?? a position which, for obvious reasons, should not occur.
Hyster E60XM-33
1996 Mercury Mystique GS, Zetec, ATX
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