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1988 Ford Bronco Didn't pass smog

Tiny
MEDIC458
  • MEMBER
  • 1988 FORD BRONCO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I took my ford Bronco II to get smogged, and it didnt pass the NO(PPM) at 25 mph.
what would be the cuase, and any suggestion as to repairs would be helpful.
Wednesday, February 17th, 2010 AT 10:42 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi medic458, Welcome to 2carpros and TY for the donation

Check and clean out the EGR valve and test it, also could be the catalytic converter or a computer controlled sensor locking up on open loop mode -check coolant temperature sensor/O2 sensors
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Wednesday, February 17th, 2010 AT 3:17 PM

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