spider problem-fuel pressure??

["Robert W. Murphy" <rmurphy@xxxxxxxxxxx>]

I have had this problem with my 90 Spider (Motronic) for about a year now.  
However, it is getting progressively worse.  Here's the problem:  when the 
car is cold (sitting for 8+ hours) and I start it, it will idle for about 15 
seconds then die.  I have to keep the revs up at about 1300 rpm to keep it 
running.  When this first started I was able to drive out of my driveway and 
then come to a stop and the car was fine.  Now, even driving @ 1/2 mile it 
will die when I come to a stop.  Then I restart it and it will be fine until 
it sits for another 8+ hrs.  I have replaced the air valve which lets in more 
air when cold, the temperature sensor, and have had the throttle position 
switch tested and adjusted.  The problem still persists.  The ECU is not 
giving any error codes.  I even put in a different ECU and the problem 
continued.

My question:  Is it possible for the fuel pressure regulator to let the fuel 
pressure lower overnight so as to not have enough pressure for the car to run 
(until the pressure builds)?  And then operate correctly all day until I park 
the car overnight?  To me it seems that if the fuel pres. reg. fails, it 
should show symptoms all of the time?  Any thoughts on this?  Thanks in 
advance.

Rob Murphy
Coral Springs, FL

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End of alfa-digest V7 #157
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