Execive black smoke, codes p0133 and p0171

1997 DODGE RAM
150,000 MILES
Avatar
ROLANDINI
  • MEMBER
  • 2 POSTS
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?
Feb 11, 2012 at 1:41 AM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
Where are you seeing those readings? From a scan tool or using a DVOM at the sensor?
Feb 11, 2012 at 2:03 AM
Avatar
ROLANDINI
  • MEMBER
  • 2 POSTS
I,m seeing this readings from a scanner.
Feb 11, 2012 at 4:22 PM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 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
Feb 11, 2012 at 4:42 PM