Failed Emisions Again

[wwhalenc]

Is there any reliable trick to confirming whether or now an '86 car is running open loop (other than smelling)? I wish the DME would blink at me like the KLR and let me know what's wrong.

[Brando]

You need a flexible gas analyzer and road time to set the car up to pass smog, assuming everything is working correctly.

Or, pay for some dyno time where they have an sniffer system so you can try and tune the car.

[wwhalenc]

Oh, btw .. a little more info: I'm poor.

"assuming everything is working correctly." . That's precisely the prob. For instance, in my case the next suspected problem causing richness is the speed sensor. Well I can test resistance but don't have an oscilloscope to see if it truly works. I do have another speed sensor though, but if i replace I want to confirm that it actually made the difference between allowing the car to run at stoich vs. open loop rich.

So there's no trick. I was hoping there was quick test to see if its even trying to run at lambda (I imagined it'd go something like this:
let car idle or have friend hold at 3K -->unplug the [whatever sensor...probably oxygen sensor].

Did is affect rpms/smoothness? If yes, then it was running closed loop; If no, then it wasn't running closed loop.