940 Turbo stalls randomly while driving

  #1  
Old 05-14-2019, 12:10 PM
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Question 940 Turbo stalls randomly while driving

Started happening few days ago. Has happened 6 times now. Conditions have been: driving 20-30 mph and beginning to slow (not necessarily braking). All but 1 time was slowing, via coast, uphill (that 1 time was coasting downhill).
The dash goes dark only momentarily before illuminating again (as if key were turned on for accessories but not as far as ignition). I put the car in park and it starts with no issue.

I figure it must be bad wiring somewhere. First thing I checked was the battery connections - all solid with no wiggle/play in them. Given that the car starts fine, I'd rule out starter wiring.
I found no obvious visual indication of cracks, frays, etc. to wiring to alternator or distributor.

Experienced this before? Recommendations for next steps?

Model year = 1995
 

Last edited by 940newb; 05-14-2019 at 12:15 PM. Reason: add vehicle year
  #2  
Old 05-14-2019, 06:34 PM
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I'd start with the Crankshaft Sensor, then the fuel relay, both most likely culprits with the symptoms you describe.
 
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Old 05-15-2019, 10:40 AM
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Thanks very much.
Buying a new sensor today.
 
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Old Yesterday, 11:58 AM
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new OEM Sensor installed. Not the issue. Car stalled 3 times day after the install.
moving to fuel relay.
Alternator starting to have a bit of play in the pulley. Could that create a momentary loss of spark and thus stall?
 
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Old Yesterday, 01:16 PM
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does the battery light ever come on? not likely the alternator as these older cars can run off the battery (until it drops voltage).
 
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Old Yesterday, 02:13 PM
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When car stalls all dash lights illuminate. At stall, I simply put the car in Park and re-start, without issue.
battery light does not come on otherwise.
Must say that stalling in the center lane of the road during the commute to work is not fun.
 
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Old Yesterday, 06:17 PM
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Did you ever change the fuel relay? How many miles?
 
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