Emissions test
Thread Starter
Intermediate
Joined: Mar 2007
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Emissions test
In the event any member of this forum has had difficulty with an emission test recently, I would appreciate any info regarding same. Several months ago, I installed a Range V4 disabler with a switch to turn it off while vehicle was parked. Today my C7 Stingray received a "not pass-not fail" result from the Maryland State Emission testing. The reason given by the office was that the OBD system was not ready to read the monitors. They advised me to continue to drive the vehicle long enough so that the monitors reset themselves. The Range connector was removed from the OBD port by me just prior to the test. They advised that I drive the vehicle and return in a month. This is obviously what I will do while the connector is removed from the OBD port as I haven't a clue what else can be done. Thanks for any inputs or advice.
Ralph
Ralph
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Joined: Feb 2006
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From: DFW Area TX
How much have you driven this C7? It does take a while for all of the various emission related sensors to get to the "ready" state. I'm not aware of the Range disabler interfering with the sensors, but if it does, that is a problem.
There are a number of threads about fairly new C7's "failing" emissions tests because the sensors are not ready. Search this forum for failed emissions. This has been common in cars taken into California and some other states. You'll find plenty of info. BTW, all C7's are 50 state compliant.
There are a number of threads about fairly new C7's "failing" emissions tests because the sensors are not ready. Search this forum for failed emissions. This has been common in cars taken into California and some other states. You'll find plenty of info. BTW, all C7's are 50 state compliant.
Thread Starter
Intermediate
Joined: Mar 2007
Posts: 34
Likes: 10
Mr. Z,
Thanks for your reply. My C7 has 8,210 miles to date and the Range device was used sporadically for about 800 of those miles. Within 3 weeks or so, I'll try again this time without the Range plugged in during that duration. Judging by all of the literature given to me by the office personnel explaining corrective measures to be taken prior to re-testing, this must be a common problem here in Maryland. Here's hoping and thanks again.
Ralph
Thanks for your reply. My C7 has 8,210 miles to date and the Range device was used sporadically for about 800 of those miles. Within 3 weeks or so, I'll try again this time without the Range plugged in during that duration. Judging by all of the literature given to me by the office personnel explaining corrective measures to be taken prior to re-testing, this must be a common problem here in Maryland. Here's hoping and thanks again.
Ralph
