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Author Post or Pre CAT sensor
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
User status: Offline
9th Apr 08 at 15:23   View User's Profile U2U Member Reply With Quote
which lambda would cause over fueling if not working propley?

one before or after the cat?
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline
9th Apr 08 at 15:30   View User's Profile U2U Member Reply With Quote
before is more likely.

however to be sure you need to read the live data from both sensors.
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
User status: Offline
9th Apr 08 at 15:33   View User's Profile U2U Member Reply With Quote
only because my C02 level is not going well on fast idle. Needs to be under .2 and its .34
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
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9th Apr 08 at 15:36   View User's Profile U2U Member Reply With Quote
wouldnt it be the one after the cat? as it reads theres to much oxygen so it over fuels causing c02 to be high
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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10th Apr 08 at 17:54   View User's Profile U2U Member Reply With Quote
pre cat really.

Generall post cat lambda is there to test the cat efficiency!

What was the lambda reading on the test?

As Dave said the only real way to test it is live data from the sensor
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
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10th Apr 08 at 21:21   View User's Profile U2U Member Reply With Quote
lamba was perfectly fine, well i have a new precat sensor with me now so trying that.
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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10th Apr 08 at 22:21   View User's Profile U2U Member Reply With Quote
Fine as in what bang on 1 or within the limits?
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
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12th Apr 08 at 20:12   View User's Profile U2U Member Reply With Quote
lambda was bang on 1
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
User status: Offline
12th Apr 08 at 20:14   View User's Profile U2U Member Reply With Quote
CO limit 0.2% Actual Value 0.38%
HC limit 200ppm Actual Value 57ppm
Lambda limt 0.97-1.03 Actual Value 1.00

 
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