Quality Emmisions Mechanic needed - JeepForum.com

 
LinkBack Thread Tools
post #1 of 8 Old 03-17-2013, 09:00 AM Thread Starter
dzrtrider
Registered User
1994 YJ Wrangler 
 
Join Date: Nov 2007
Location: Santee, CA
Posts: 86
Quality Emmisions Mechanic needed

As the title says i'm in need of an Emmisions mechanic to help me get my 94 YJ back on the street and trail, over the last couple years i have had her in to alot of different shops and have replaced about every possible piece associated with emissions and she still cannot pass, spent the last week and a half at the dealer and all they would say is replace this and replace that which was already done within the last year. the failure is in "NO", the rest of the test passes but looks like the vehicle is running on the lean side which is causing the high "NO". so if anyone knows a mechanic who is good with reading test results please let me know. Thanks, Darrin

dzrtrider is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 03-17-2013, 03:29 PM
Xpress
Registered User
1996 ZJ 
 
Join Date: Dec 2010
Location: The Great Big Box
Posts: 5,929
Garage
I think sdmoose429 might be able to help out. He lurks around here from time to time.

All about that unibody life.
Xpress is offline  
post #3 of 8 Old 03-17-2013, 07:04 PM
Y0ungGunZJ
Registered User
1993 ZJ 
 
Join Date: Dec 2012
Location: san diego
Posts: 487
He runs the smog station over by miramar rd off black mountain rd.

_______._____. << ----Mine------____.____.
//_|__l__,\____\,___------Dads>> /l __,[____],_
l_--\__\__l---\[]llllll[]| -----------l--|_|-L-OllllllllO-
(o) )-o---(o) )---o-) ) ---------(o) )-o-(o) )--o-) )
Y0ungGunZJ is offline  
post #4 of 8 Old 03-17-2013, 07:14 PM
joeyk803c
Registered User
2003 TJ Wrangler 
 
Join Date: Mar 2011
Location: Spring Valley
Posts: 1,376
Sounds like you could have high combustion temps which is causing high NOX readings. How old is your exhaust system? Any potential leaks before the cat on it? Have you tried Seafoaming the engine to help clear the gunk out of it?
joeyk803c is offline  
post #5 of 8 Old 03-17-2013, 07:35 PM Thread Starter
dzrtrider
Registered User
1994 YJ Wrangler 
 
Join Date: Nov 2007
Location: Santee, CA
Posts: 86
Quote:
Originally Posted by joeyk803c View Post
Sounds like you could have high combustion temps which is causing high NOX readings. How old is your exhaust system? Any potential leaks before the cat on it? Have you tried Seafoaming the engine to help clear the gunk out of it?
The whole exhaust system is new from the cylinder head to the tail pipe, i have not tried seafoaming the engine because i think the high NOX readings are related somehow to the low HC readings of 1 at 15 and 25 mph and low CO readings of 0.1 at 15 and 25 mph, i think somewhere in the system the PCM is not getting the information to increase fuel supply, oh and yes the PCM is also new as well as all the engine sensors. Thanks for you replies
dzrtrider is offline  
post #6 of 8 Old 03-17-2013, 08:02 PM
joeyk803c
Registered User
2003 TJ Wrangler 
 
Join Date: Mar 2011
Location: Spring Valley
Posts: 1,376
Never hurts to seafoam it.


Otherwise, pm sdmoose429. He should be able to help you out.
joeyk803c is offline  
post #7 of 8 Old 03-18-2013, 09:11 AM
sdmoose429
Registered User
2000 TJ Wrangler 
 
Join Date: Feb 2009
Location: Good Ole' Sandy Eggo
Posts: 1,044
Darrin,
Joey is right that the NO is caused by high combustion temps and pressures. So, has the head been surfaced? And, what brand of O2 sensor are you running?

We have found over the years that anything other than Bosch will cause a high NOx reading. I'd also like to see a Lamda on this. Call me, or drop by, with you VIR and I'll check it out. 858-549-9550. The Smog Station 1.

Happy Trails, Moose KF7ITJ
"The difference between men and boys is the price of their TOYS!"
sdmoose429 is offline  
post #8 of 8 Old 03-18-2013, 03:08 PM
brokenujoint
Registered User
1997 TJ Wrangler 
 
Join Date: Dec 2012
Location: san diego
Posts: 738
Quote:
Originally Posted by joeyk803c View Post
Never hurts to seafoam it.


Otherwise, pm sdmoose429. He should be able to help you out.
Actually you are wrong. Using Seafoam, you have to be careful. Pouring it thru the intake/exhaust can waste O2 sensors and also jack up the Cat. It has to be a slow dribble dribble and dont let the jeep stall out at the same time as not to rev it up. You also might get shot by your neighbors when they get engolfed in a billow of white smoke and think the Koreans just attacked.

I used it for the 1st time like 10 yrs ago and got to aggressive with the brake booster into the intake pour. It stalled. Wouldnt start for a day... then when it did it just bucked and puttered. I thought I screwed it up HARD... It cleared out but for that day I was stressing BAD.
Ive used it since with great results. Drop it into your oil about 300 miles before an engine change, drop it into your gas tank, and run it thru your intake/exhaust carefully.... Worth a shot.... just the instructions.

Is the jeep overheating at all? Have you done a compression check? Right plugs? Tune up parameters correct?

If @ 1st you don't succeed, grind it, hammer it, weld it, drink a beer and try again.
brokenujoint is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome