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secondchance · 06-12-2012

Last time I had a similar problem my Z was also throwing a code 56 (I think...). Referenced code indicated Pressure Differential Sensor (Jim, perhaps you remember the terminology?). In essence this is a sensor that looks a lot like the MAP sensor but compares differential pressure and allows for activation of 2ndary system. For 94 model this sensor is mounted under side of the plenum.
I will go through my manual tonight and clarify further.

06-12-2012	#10
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,726	Re: Stumblin Bumblin Z Last time I had a similar problem my Z was also throwing a code 56 (I think...). Referenced code indicated Pressure Differential Sensor (Jim, perhaps you remember the terminology?). In essence this is a sensor that looks a lot like the MAP sensor but compares differential pressure and allows for activation of 2ndary system. For 94 model this sensor is mounted under side of the plenum. I will go through my manual tonight and clarify further.