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  #1  
Old 05-17-2006, 09:35 PM
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Join Date: May 2006
Posts: 5
Emissions problem

HI, I recently failed the emissions inspection on the low speed: HC 825 / CO 8.30...what could be causing this? I have been told it could be my CAT or my o2 sensors, I was also told to just get a tune up.
I really don't want to get ripped off. I just need to get an inspection sticker!
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1992 300ce
artic white
121k

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  #2  
Old 05-18-2006, 08:27 AM
Ta ra ra boom de ay
 
Join Date: Jun 2004
Location: Pittsburgh
Posts: 1,915
Your car has an M104 engine right?
To get good help, you really need to post all the test results you were given in the report. (Was the test a load test on a dyno?- What are the limits in your state?- What state are you in?...)
And yes, an O2 sensor, new plugs, a couple of bottles of fuel injector cleaner, and an oil change would probably be in order.
Search "emissions" to find lots of good related info and advice. Also look for contributions by member "Duke2.6" who has put a lot of good info out there.
__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html
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  #3  
Old 05-19-2006, 03:55 PM
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Join Date: May 2006
Posts: 5
Talking

Well, it turned out to be a bad o2 sensor. It was 300.00 to get it fixed. Went to get the inspection afterwards and it passed with flying colors.

Coco
Austin, TX
92 300ce
Artic White
121k

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