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Old 09-19-2002, 08:17 PM
phnelson phnelson is offline
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Post Check Engine Light

Just got the Avalon service manual today. (I am trying to track down why my TRAC OFF light is on.

System too lean, means that your gas/air mixture is too light on gas. Possible causes are:

Loose air intake hose or duct
Incorrect fuel line pressure
Obstruction in injector
Heated oxygen sensory malfunction
MAP or MAF sensor malfunction
ECT sensor malfunction
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