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Re: Pressure Sensor


In a message dated 97-07-03 12:16:42 EDT, you write:

<< Subj:	Pressure Sensor
 Date:	97-07-03 12:16:42 EDT

 Anyone here familar rebuilding the Pressure Sensor for the Type III ? I 
 needed to know if it is a repairable  ? And I need to speak somebody here 
 who is good with the Fuel Injection and D- Electronic system. I own a '71 
 SQBK. >>

Jody,

I've worked with D-Jetronic systems for about the last 15 years (mostly 914's
and 411/412's). It's a good system, but the manifold pressure sensor is a
weak link on these now very old systems. 

The problem is mainly a thin brass diaphram inside the sensor which breaks
from fatigue. I'll bet I have 10 of these things lying around with busted
diaphrams. A few years ago there was a company in NY that was rebuilding
these but they have since stopped (not enough volume). Now you have to pay
over $200 to get one from places like RMCW.

I have been searching for the past few years to find someone who can stamp a
duplicate brass diaphram plate so I can fix all the bad ones I have. In the
meantime, I buy all the good ones I can at shows. I test them by putting a
hose on and "sucking" a vacumn....if it holds, it has a good diaphram. I will
take it home, try it and if it doesn't work....I'll put the diaphram in
another one.

Mike

PS: Even the riveted sensors can be taken apart... just drill out the rivets
and replace with screws.


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