Smog Test - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

LinkBack Thread Tools Search this Thread
Old 07-01-2011
Turbo Roadster's Avatar
Thread Starter
Join Date: Jul 2007
Location: Lancaster, CA
Posts: 277
Smog Test

Question for anyone had the truck smogged today only thing that registered was CO2 @ 14.8 ppm everything else was 0.0 O2, HC, CO and NO. Is this normal Truck is a 2001 4.0 auto

Reply With Quote
Old 07-02-2011
Join Date: Mar 2011
Location: SLC UT
Posts: 7
These trucks have a massive overkill of cats and that might explain it. They have 2 mini cats after each manifold followed up by two more main cats. With 4 catalytic converters a car ought to be clean.
Reply With Quote
Old 07-02-2011
04RangerDave's Avatar

iTrader: (3)
Join Date: Jul 2010
Location: RI
Posts: 5,030
Wirelessly posted

I have removed my large cat and one pre cat. I passed emissions and the tail pipe stiffer
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Evap test for ca smog requirements keeps failing Rookiejohn General Ford Ranger Discussion 1 07-21-2015 11:32 AM
High HC and CO readings on Failed Smog Test Lonesomejack SOHC - 2.3L & 2.5L Lima Engines 1 01-26-2015 12:25 PM
Failed Ca. Smog Test Mikey SOHC - 2.3L & 2.5L Lima Engines 0 11-22-2010 11:12 AM
Nevada smog test???? DangerRanger1933 General Ford Ranger Discussion 7 02-16-2009 07:12 PM
'98 4.0 did not pass Nevada smog test?? DangerRanger1933 General Technical & Electrical 0 11-22-2007 06:20 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 08:45 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.