just curious - how do you know that you have a stored code if your check light isn't lit? is it a temporary code that you found with the green connectors?
also, i hadn't heard of an early EJ22 ECU that is connected to a mileage counter? or am i brain farting on this one?
in my experience, high NOx CAN be caused by high combustion temps, but is more likely caused by (in order) a failing cat or elevated O2 in exhaust. the early EJ22s are able to pass smog without an EGR system.
could whatever blew out your previous cat have compromised this one also? i've been hearing rumors lately that there are/were some cats sold in recent years that don't last very long at all anyway....
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--- In subaruvanagon@..., "Brian McHugh" <bmchugh0946@...> wrote:
I got the ck light to clear, turned out to be the OSX counter on the spedo cable. Still have the stored code on the ecu but no active light. Still have to find the cause of the high NOX readings.
From: brianmchugh22
Sent: Saturday, March 31, 2012 3:54 PM
To: subaruvanagon@...
Subject: [subaruvanagon] CA Emmissions Fail Help
I have a 85 Vanagon with a 92 EJ22 manual transmission engine that has just failed emmissions in CA. The engine has around 200k on it. The readings are as follows.
15mph 1786rpm CO2 13.9 O2 .9 HC 66 CO .72 NO 1348
25mph 1639rpm CO2 13.9 O2 .9 HC 72 CO .69 NO 1432
It failed on the NO as the allowable was 1085 and 1120.
The ck eng. light is lit. I am getting code 24 with the black connectors connected. I did just clean the idle air valve as I had a poor idle and occasional stalling after comming off of load. Runs fine now. O2 sensor, plugs, and CAT were replaced after a problem that melted the orignal CAT and blew out the muffler a few months ago. Turned out to be a loose sensor wire that has been corrected. No running problems now.
Any ideas, bad CAT????
Thanks,
Brian
San Diego, CA
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