smog fail high no(ppm)

Reply Subscribe

Thread Tools

Search this Thread

Aug 28, 2017 | 05:48 AM

bob wort

Thread Starter

Junior Member

Joined: Aug 2017

Posts: 1

Likes: 0

smog fail high no(ppm)

94 f250 460 eng. what generally causes this? get code 311 but smog guy says maybe egr. can the egr and the "air system" both cause this high no(ppm) ?????

Aug 28, 2017 | 09:45 AM

glc

Senior Member

Joined: Dec 2006

Posts: 43,532

Likes: 817

From: Joplin MO

311 (R) AIR system not working - Single, Right or Rear HO2S

AIR system is the "smog pump".

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last