Mike is absolutely correct about the warming up. The place where I take my van in Walnut Creek uses a metal bar type contraption that goes from the steering wheel to the gas pedal, same one they use on the high idle test, and they get that Cat hotter than the temperature in Sacramento on a "hot" valley day in Summer. That's smoking hot....before they do the test.

Mike Miller <mwmiller@CWNET.COM> wrote: Warming up certainly DOES make a difference. A huge difference.

Mike

On 8/16/03 4:38 PM, "karen davis" wrote:

> Anyone in CA (Bay Area) can help me pass smog? I've always past with
> flying colors but today I failed. I don't understand why?
>
> Here's what I got for 84 Vanagon that is in great shape:
>
> 901 RPM HC max is 150, I got 61; co max is 1.20, I got .13 PASS
> 2554 RPM HC max is 180, i got 344; co max is 1.20, I got .36 FAIL
> on HC
>
> Why did I fail on just HC? In the past I drove van on freeway to warm up
> before taking test. This time van sat for about week before I took for
> test. Could this have caused me to failed because I needed to warm up
> cataylic converter. Smog mechanic said warming up makes no difference.
>
> Is there anyone local that can help me pass?
>
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