wont pass smog
#1
wont pass smog
i have a 2001 silverado v8, because i got a new battery ive had to drive my truck (spare vehicle) so a sensor will flash for a smog. well ive driven it a couple hundred miles and still one of the sensors wont "flash". ive tried drive cycles where i cold start the truck for a few mins, then drive on the freeway for so many mins, coast til down to 20mph, then back up etc...ive tried a few of those and no luck. anyone else have a similar issue?
thank you
thank you
#3
to pass a emission test all the component monitors must run and pass. what monitor are you trying to complete? you will need a scan tool to find out. Once we know which monitor is incomplete, we can determine what is stopping it from running.
#4
CF Monarch
i have a 2001 silverado v8, because i got a new battery ive had to drive my truck (spare vehicle) so a sensor will flash for a smog. well ive driven it a couple hundred miles and still one of the sensors wont "flash". ive tried drive cycles where i cold start the truck for a few mins, then drive on the freeway for so many mins, coast til down to 20mph, then back up etc...ive tried a few of those and no luck. anyone else have a similar issue?
thank you
thank you
#6
#7
flashing refers to reprogramming a module; not related to what you are doing. you need to get a monitor to run and complete.
the secondary air monitor will not complete until the heated 02 sensor monitor runs and passes. it needs data from a working 02 to do it test. the monitor will be inhibited until the o2 pass. fix the o2 and the air monitor will run
the secondary air monitor will not complete until the heated 02 sensor monitor runs and passes. it needs data from a working 02 to do it test. the monitor will be inhibited until the o2 pass. fix the o2 and the air monitor will run
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#8
flashing refers to reprogramming a module; not related to what you are doing. you need to get a monitor to run and complete.
the secondary air monitor will not complete until the heated 02 sensor monitor runs and passes. it needs data from a working 02 to do it test. the monitor will be inhibited until the o2 pass. fix the o2 and the air monitor will run
the secondary air monitor will not complete until the heated 02 sensor monitor runs and passes. it needs data from a working 02 to do it test. the monitor will be inhibited until the o2 pass. fix the o2 and the air monitor will run
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mcvoss
Silverado & Fullsize Pick-ups
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September 3rd, 2011 5:29 PM