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1993 Pontiac Grand Prix Question: Why is my car flooding it's self to death?



MichaelTravis, 3.1L V6, Marshall, AR, July 15, 2014, 11:34

Every time I start my car it sets there and runs very rough putting out black smoke. I've changed Map Sensor, fuel pump and gas cap. Thinking about cleaning throttle body. It idles high at times.

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  • Answer #1

    July 15, 2014, 11:40

    Check engine light on? TEST or MONITOR coolant temp. sensor, if it's reading -40F , then it's failed and your cars computer thinks it's really cold outside and is enriching the air/fuel mixture mistakenly. TEST AND VERIFY FIRST , buy parts later......and be sure your testing the correct component....Also , from what I just checked , they sell the sensor along with the wiring 'pigtail' in some cases , leading me to believe you might want to check the wiring also.

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    MichaelTravis, July 15, 2014, 13:18

    Yes! Check engine Light is on. Thanks my friend. Appreciate your input.

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