Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 10-08-2002, 01:08 PM
Posts: n/a
Help: 88 190e 2.3 failed emissions

196k mi

Passed 25/25 test, failed 50/15 test

NOx ppm was 2756 (allow 1323)

Oil change was done 25mi prior to test. Car has new coil, plugs, wires, rotor, cap, and O2 sensor.

Thanks in advance for any advice you guys can provide
Reply With Quote
Old 10-10-2002, 02:06 AM
Posts: n/a
Hopefully its something minor, but as a result of poor maintenance by previous owners, my 88 300E failed the idle speed emmisions test but still passed the high speed test. Mechanic determined that engine management computer was running in open loop mode (not managing engine), he fixed that but it still wouldn't pass. Service tech then pulled the valve cover and discovered badly worn cam lobes which was causing engine to emit too much bad stuff at idle speed. Result, major bills. I have heard that if a car fails the high speed test then the catalytic converters could be a potential source of the problem.
My suggestion unless you are a good benz mechanic yourself, take it to a pro for a diagnostic. A friend of mine has an 02 WRX also, sweet car.
Reply With Quote
Old 10-10-2002, 07:30 AM
Registered User
Join Date: Dec 2001
Posts: 565
190e smog test problem

300E Catalytic Converter Test

1988 300TE fails emission test and valve job

Failed emmisions test!

My 93 190e 2.6 Failed the emission test, tech help

Lots of ideas in these threads. Many point to a worn out cat.

One simple trick that might help is to first drive the car on the open road a fair distance - get it good and hot, then take it straight in to the testing facility. Try to be the first one in line.
Fully warmed up engines supposedly run a little cleaner.

Last edited by Mike Richards; 10-10-2002 at 07:37 AM.
Reply With Quote
Old 10-10-2002, 08:50 AM
drbrandini's Avatar
Join Date: Sep 2001
Location: Wrightsville Beach NC
Posts: 1,512
One simple trick that might help is to first drive the car on the open road a fair distance - get it good and hot, then take it straight in to the testing facility. Try to be the first one in line.
This is very good advice... Many people get up in the a.m. and drive down to the local gas station to have their car inspected, The only problem here is that your cat never gets a chance to fully warm up. Cats don't begin to fully function properly until they reach around 800 - 900 degrees. Take her out for stroll to stretch her legs before hand, and call ahead to the service station, some allow appointments.....

Hope everything goes well......

2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776
Reply With Quote


Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 06:37 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page