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Check engine light

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Old 06-05-2011
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Check engine light

92 VX after I start engine and drive for 5 to 10 min check engine light comes on. Code 48 when O2 was not installed and the check engine light was always on. Installed O2 sensor and in 5-10 min light is on. I have aftermarket exhaust and header installed.
Old 06-05-2011
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Re: Check engine light

It's your LAF sensor, bad wire/connector, or bad ECM/PCM. Find a service manual for step-by-step diagnosis.
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