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1990 Miata shuts down while driving

Tiny
ECDOZIT
  • MEMBER
  • 1990 MAZDA MIATA
My 1990 Miata has 240,000 miles on it. It has been taken care of but lately it will shut off while driving, it does this at any spped. Somwetimes it will restart before I come to a stop, and other times I have to restart it after stopping. Its like the engine ignition has been turned off. What could be causing this to happen. :
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Thursday, May 24th, 2007 AT 8:45 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be a crankshaft position sensor or the distributor pick-up and also a failing fuel pump.

Duplicate the problem-then immediately check for spark and fuel pressure.
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Thursday, May 24th, 2007 AT 5:18 PM
Tiny
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I bought the repair manuel and the check engine trouble code is (34). It indicates that there may be a open or short circuit from the IAC valve to the PCM. Or the same between the IAC and the fuel injection relay. Could this be causing the the cars engine to act as described above.
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Friday, May 25th, 2007 AT 7:34 AM
Tiny
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Try cleaning out the IACV and see what happens
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Friday, May 25th, 2007 AT 4:00 PM

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