Geting ready to start emission testing here. For 96 and up they will just hook up to your OBDII connector and transmitt to Austin. Can they tell if you have the O2 simulators in place without looking?

Ron

 

:rolleyes: WOW isn't that invasion of privacy????? That would **** me off big time.. WHy do they have to hook up to your OBDII connx??

 

MrNuke, for the same reason "they" can tell us to wear seat belts, etc; because we gave "them" the power and don't want the responisbility that comes with freedom. :rant:

his touch, since (I believe) the sim doesn't cycle between .1mV and .9mV, like a real O2 sensor, I should think it would show up on a scanner as bad O2 sensors. If you had scans before/after would could be sure though. Even a scan now would tell you how the sims look to the scanner; perhaps they are "smarter" than I would think.

 

Kinda wish they would scan 'em here. Just fixed a kid's Camaro which went for 6 retests failing them all. A simple scan showed the O2 was disconnected (previous owner thought it would run faster in open loop) and had pulled the check engine bulb.

 

Yea but a seatbelt will actually save a life... Hooking a freakin scantool to the car would inhibit from modifying it wouldn't it?? I mean for emissions testing that seems a bit absurd. (Thank god for my OBDI old-school ecm) harharhar..


[Modified by MrNuke, 1:12 PM 4/24/2003]

 

I'm guessing, but aren't they just looking for codes & that the PCM is in working order? How many smog techs really know what all the #'s mean - say a block learn of 156 vs 128 - on the thousands of different makes they test & would it make a bit of difference in what's coming out of the tailpipe? Maybe it's in the software - Mitchell certainly provides it to the Dealers for troubleshooting - but I don't know of any State that has taken it that far or if the GREENIES who push for this stuff even know what's in a data stream.

 

The alternative, if you have pre OBDII is having them put it on the 'dyno' and run it up. I'll take the plug in anyday. Word is if the car gets away from them and runs off the dyno, it's YOUR fault. Figure that one out. What I understand about the test is that the ODBII is smart enough to figure out if something is not right and will set a code, no codes and a 'WORKING' check engine light should pass. This is what I have been led to believe. They just hooked up and did not probe the exhaust on my 2K Grand Prix.

 

It may depend on the emission station you take it to as well. On my '96 Bronco, the check engine light has been on for like 2 years...the data unit that detect error codes has a broken wire or something. The thing still runs fine and passes emissions no problem. I have had two or three stations tell me they won't pass it if the check engine light is on, though, regardless of what the actual problem is.

 

They really screw us out here in Ca.......its hard to get away with anything.....I've just given up.....status quoe.......
tony
:mad

 

From what I have been told, when they hook it up ti the computer, the information goes directly to Austin. The computer there determines if you pass or fail. I don't know if the run the engine or what. If the engine is not running, it cannot see the O2 sensors cycling.


Ron