Sign in to follow this  

Failed Emmisions

Recommended Posts

my 1990 ls400 with 270K miles failed emissions again this yr; last yr I cleaned the egr valve and ports and throttle body; all were CAKED with carbon. still failed. just got a shop manual that says to check the charcol canister (where is it) and to open the egr modulator and blow out the charcoal filter in it; how do i get the modulator open as much carbon that was in the ports id say the modulator filter is probably dirty too. oh ye the nox failed way to high(no2 i think)its runnig real rough at idle id like to change the plugs and wires hope that helps out the idle. gotta get to them first; any help on any of this is welcome thank yo

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this