1995 Ford Aerostar

1995 FORD AEROSTAR
168,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SHADETREEMOBILE
  • MEMBER
  • 1 POST
cause of excessive n.o. reading.
Aug 20, 2010 at 7:45 PM
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WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 POSTS
If you are referring to NOX, that is caused by high combustion temperatures so anything that raises the combustion temps should be looked at starting with the EGR system. Make sure that is working good then look at ignition timing and engine temperature.
Aug 20, 2010 at 8:10 PM
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