I went to register my truck today (Colorado Springs), and found out unfortunately that diesels are tested for emissions (gas vehicles are exempt). I was registering down there to avoid the emissions hassle, in the past it has always been in issue with every vehicle.
Down there it just so happens only one shop is certified to do the testing. I was warned that it has been known to be a bit shady. I went down without an appointment, since I was scheduled to leave town in the afternoon. I informed them of this, and they fit my truck in. They asked if it was modified and I told them no. It is bone stock.
45 minutes later the tech goes to the guy and the desk and I overheard them talking. Their testing also displays power numbers. They were saying my power numbers were too high, and he asked the tech if he forgot to reset the computer.
He then turns to me and says "I thought you didn't have a tune" to which I replied "I don't". Told me my check engine light came on three times during testing and that is an obvious sign of a tune. I was basically accused of having the truck tuned.
I have an Edge CTS I use for monitoring and doesn't have any tuning in it whatsoever. They blamed that as the cause, and he never heard of one that just does monitoring.
It's amazing the Check Engine light came on during testing, since I had just finished driving for three hours (avg speed 75mph-90mph) with no lights or codes at all. Been driving the truck all week with the only code being related to the MAP sensor (replaced a few days ago, no more codes).
I left and checked my Edge and 4 codes popped up. These were the codes that popped up when I had my stall issue. Well $2300 dollars later I had an injector and new Orings installed to get it running...That was 3 weeks ago. Has been fine since.
I cleared the codes, and entered the highway. I drove the truck hard and ran codes, to which none were found. I have since logged another 200 miles with no codes.
I am suspicious that given my circumstances (having to leave town ASAP for an extended period) it was seen an as opportunity to take advantage and make a quick $50. It passed all the other test with flying colors.
Only thing I can't figure out is why those codes were displayed when I pulled away from the shop. They haven't popped since I had the truck fixed.
What say the peanut gallery?
Should note after this, I will be registering my truck at my shop in an area with zero emissions. Not paying for the same thing twice.