 Measuring CO on a catalytic converter car, ...how does one measure "upstream of the catalytic converter" |
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| type4org |
 Oct 16 2006, 08:43 PM
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You need PLAID!  Group: Members Posts: 231 Joined: 13-June 06 From: Oldenburg (Oldb), Germany Member No.: 6,212  |
The helpful sticker above the relay board on the drivers side in the engine compartment informs me that the correct CO value is 2.0 ±1.0 - and the helpful hint that the value must be measured "upstream of the catalytic converter"/
This is a question for the old-time experts: Did Porsche really expect you to take off the muffler and catalytic converter to measure CO? I can't see a way to do it without disassembling the whole system... |
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| Joe Bob |
Oct 16 2006, 09:27 PM
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Bunghole.....stick a probe in there.....upstream from the cat.
AW GAWD,,,,,I said probe and bunghole on the same sentence!!!!!!!!!!!!!!!!!!!AHHHHHHHHHHHHHHHHHAaahahahahhahahah, I'm in a Beevus and Butthead sitcom........ |
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| type4org |
Oct 16 2006, 09:35 PM
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You need PLAID! Group: Members Posts: 231 Joined: 13-June 06 From: Oldenburg (Oldb), Germany Member No.: 6,212 |
QUOTE(mikez @ Oct 16 2006, 11:27 PM)  Bunghole.....stick a probe in there.....upstream from the cat. There is an opening somewhere? I didn't notice it... where is it? |
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| Joe Bob |
Oct 16 2006, 09:53 PM
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#4
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
if you have an 02 sensor...yes. Pull the sensor.
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| McMark |
Oct 17 2006, 12:40 AM
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#5
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
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| ejm |
Oct 17 2006, 04:45 AM
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#6
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I can see the light at the end of the tunnel Group: Members Posts: 2,692 Joined: 3-February 03 From: Massachusetts Member No.: 224 Region Association: None |
CO test port and cap on the stock exhaust
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| type4org |
Oct 17 2006, 06:50 AM
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#7
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You need PLAID! Group: Members Posts: 231 Joined: 13-June 06 From: Oldenburg (Oldb), Germany Member No.: 6,212 |
QUOTE(mikez @ Oct 16 2006, 11:53 PM) if you have an 02 sensor...yes. Pull the sensor. Umh, the O2-sensor is downstream of the catalytic converter. It's screwed into it, but on the downstream side. I saw that last weekend when the exhaust had to come off for a clutch replacement. That can't be the right place... |
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| type4org |
Oct 17 2006, 06:51 AM
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#8
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You need PLAID! Group: Members Posts: 231 Joined: 13-June 06 From: Oldenburg (Oldb), Germany Member No.: 6,212 |
QUOTE(ejm @ Oct 17 2006, 06:45 AM) CO test port and cap on the stock exhaust Thanks Ed, the exhaust is stock, I just haven't noticed that particular opening (IMG:style_emoticons/default/smile.gif) |
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