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Registered
Join Date: Oct 2005
Location: Idaho
Posts: 2,357
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Carbon Monoxide/Exhaust testing?
I think I may be getting some exhaust in the cabin thru my heat exchangers - when I turn on the heat - but I'm not sure. I bought a battery powered carbon monoxide alarm, like what you'd use in your house, and have been driving around w/it on my dash. It hasn't beeped yet, but I don't trust it. I know this is serious stuff, so I'd like to know for sure if I'm going to pass out while driving on the highway when I turn my heat on. Is there a testing device that I could hold up to my heater vent that would tell me w/absolute certainty if there's exhaust comming through? And who might have such a device (that would be willing to let me borrow it from them - even for a small fee?) Might a garage or mechanic have something that would work?
Thanks, Tom
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'74 911 Red Sunroof Coupe, 3.6L, etc... '76 912 Yellow SPEC 911/911CUP |
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11-01-2006, 09:40 AM
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Join Date: Nov 2002
Location: Rogue Valley, Oregon
Posts: 1,736
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Just a data point: my '75 S had 5 ppm CO in the cabin at idle with the heat on. This was before the complete rebuild, but since it appears you have factory original HEs, as I did, it may be reasonable to assume you do have CO in your heated air. I borrowed an atmospheric quality tester fro work (for confined space entry) to do my check. Maybe an environmental/industrial hygene outfit in your area could do a quick check for you.
Troy
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Troy Past: 1975 911S Silver Anniversary-rebuilt and sublime. Past: 1988 Carrera-backdated with a 3.6 and all the goodies. Present: 2011 GMC 2500HD with the 6.0 & 4x4!, 2004 Toyota Sequoia (wife's) |
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11-01-2006, 09:53 AM
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Automotive Monomaniac
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Try putting the CO detector by your head. My dash gets a flow of fresh air all of the time through the defrost vents...
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2018 - Porsche 911 Carrera 7MT / 2018 - Porsche Macan 7DCT / 1993 - Cadillac Allante / 2023 - RAM TRX (on order) |
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11-01-2006, 10:19 AM
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Registered
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Location: Idaho
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Quote:
Thanks, Tom
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'74 911 Red Sunroof Coupe, 3.6L, etc... '76 912 Yellow SPEC 911/911CUP |
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11-01-2006, 10:45 AM
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Registered
Join Date: Nov 2002
Location: Rogue Valley, Oregon
Posts: 1,736
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Should be zero. Five PPM is high to me but I don't know what the TWA (federal time weighted average) is off hand.
Troy
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Troy Past: 1975 911S Silver Anniversary-rebuilt and sublime. Past: 1988 Carrera-backdated with a 3.6 and all the goodies. Present: 2011 GMC 2500HD with the 6.0 & 4x4!, 2004 Toyota Sequoia (wife's) |
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11-01-2006, 11:11 AM
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