Question about 1999 Ford Crown Victoria

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Check engine light on 1999 Crown Victoria - CNG

Diagnostic code HO2S21, what does this mean?

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  • Anonymous Mar 13, 2014

    1999 crown victoria surges only when a/c on and stopped and in gear.

  • Anonymous Mar 31, 2014

    My check engine light came on at only 71,000 miles on my Crown Victoria. I don't know why, help?

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  • Master
  • 740 Answers

Oxygen sensor -sensor #2 on Bank #1. If I fix ya leave me a fix ya comment. Good Luck

Posted on Dec 27, 2008

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Fix check engine light on 1998 crown victoria


The light seems to be working fine. If you want to fix the problem that caused the light to come, simply go to any AUTOZONE and they will read the computer codes(s) for you. I feel safe to say however, if this is as much as you know about the issue, knowing the codes and what they mean probably won't help you fix the car. You will need a friend who knows what he is doing or a mechanic to show you what to do.

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2002 FORD CROWN VICTORIA - V8 4.6L 281ci CNG FI N 9
and
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Belt Routing Diagram - Multiple Accessory

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IS THIS A 99 CROWN VIC? IF SO IS IT MISFIRING? IF THIS IS THE CASE YOU MORE THAN LICKLY NEED PLUG WIRES.

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