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Runs rich multiple codes
Truck fuel system is running extremely rich. 5 CO at [url removed] has a large number of codes. Os sensor is new. regulator pressure is 2psi. Map sensor wiring has been repaired previously and could be part of the issue. Is there a way to clear codes on this system? Any help appreciated.
  • Posted 27 Feb 2016 01:00 PM
Total replies: 3. Showing items 1 - 3 of 3 results.
Replies
  • kevin_t
  • Pennsylvania, United States
Turn key to on position,dont [url removed] soon as you [url removed] throttle pedal ten [url removed] retrieve codes you can do same bit instead of ten you pump throttle three times and read flash codes on the dash
  • Posted 27 Feb 2016 01:41 PM
  • • Modified 27 Feb 2016 01:42 PM by poster
Thank you that is how we have been checking codes but there are too many. Will try clearing and retest. Is this fuel system known for any issues?
  • Posted 27 Feb 2016 01:59 PM
  • kevin_t
  • Pennsylvania, United States
Could be a vaporizor [url removed] also be a trim valve [url removed] i remember right there are two trim valve that have vacuum lines to them they should be located close to the [url removed] in the vacuum lines to the trim valves is a Y fitting and a check valve/restrictor [url removed] get gummed up and need cleaned from time to [url removed] if memory serves me right the only thing we used to clean the trim valves and the other parts was diesel [url removed] else used in the trim valve would guarantee you to replace [url removed] try cleaning or just replace them from the start of you believe they are the problem...
  • Posted 27 Feb 2016 06:27 PM
Total replies: 3. Showing items 1 - 3 of 3 results.

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