Re: Failed Inspection - High Nitrous Oxide
> I also have high nox problems ('83 245) and have been looking for a fix
> to get it to pass (CA) smog.
> There's an article on brickboard that describes what you're suggesting.
> It talks about a "control unit transducer" and plugging a line to it. I
> looked all over the net (and in my manual) and couldn't find a
> picture/description of the unit so I could find it and plug the line...
> If this is the same as the unit on the washer bottle, thanks for
> identifying it! Is the vacuum line you refer to on the side of the unit,
> toward the front of the car?
> Now, on to my dilemma.
> First time I had it smogged, it passed the pre test.
> Took it two blocks over to the test station. The tech at the smog
> station noticed this vacuum line disconnected, hooked it up and the car
> failed. (pinging badly I might add)
> I plugged the line and reconnected it and that causes the motor to ping
> so much I'm afraid it's going to burn a piston. undrivable.
> Why (if you know) would the motor run fine and pass smog with the line
> disconnected and unplugged but rattle so much with it plugged?
> I'm tempted to cut a hole in the line where it's not visible, just to
> get it to pass.
What you're looking at is the correct thing.
The only thing I can think of is that you managed to trap a vacuum
inside the transducer, which would put the timing on impossible advance
at all times. As long as there's full ambient pressure trapped in there
you should be fine.
Thornhill (near Toronto), Ont.
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)