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Lean mixture on Trionic
Posted by BillJ (more from BillJ) on Tue, 13 Aug 2002 06:01:06
In Reply to: The timing is retarded, Cliff, Mon, 12 Aug 2002 22:30:43
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I had this problem on my '96 Aero last year - it failed the UK MOT test due to a lean mixture (they don't measure NOx directly). The problem tured out to be the intake air temperature sensor being out of spec (according to the Trionic documentation on the Townsend site), leading to an incorrect calculation of air mass. Replacing the sensor brought everything back to normal and made the car pull so much better.
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