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Execive black smoke, codes P0133 and P0171

Tiny
ROLANDINI
  • MEMBER
  • 1997 DODGE RAM
  • 150,000 MILES
Execive black smoke, codes p0133 and p0171, new o2 sensors, upstream reading 0.000 and downstream 1040, wires are ok, new map sensor, tps, crank, idle air control, no vacuum leaks, fuel pressure ok, injectors ok. Any recommendation?
Saturday, February 11th, 2012 AT 1:41 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Where are you seeing those readings? From a scan tool or using a DVOM at the sensor?
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Saturday, February 11th, 2012 AT 2:03 AM
Tiny
ROLANDINI
  • MEMBER
  • 2 POSTS
I, m seeing this readings from a scanner.
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Saturday, February 11th, 2012 AT 4:22 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
It sounds like the fuel pressure regulator has failed, here is a link to check it out,

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Saturday, February 11th, 2012 AT 4:42 PM

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