Question about 2003 Ford Crown Victoria

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I have a 2003 Ford Crown Vic and it misfires. I start my car in the morning and after it warms up and i stop at a light the car misfires for aboutt 15 to 30 seconds. But as i continue driving it goes away then periodically comes back. I took to ford dealer and cod read 0351 and 0358 i changed coils for cylinder 1 and 8 and made sure all coils were secure and not loose. i also changed all spark plugs ford recomended plus. problem is still there. i also checked manifold no signs of damage. misfire always happens only when i stop at a red light.

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Change ur wires if still there its one of ur feul injector might be getting plugged up with stuff that slips through ur filters

Posted on Jan 03, 2011

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Sounds like your transmission is either out or close to it. I had a 2003 ford crown vic police interceptor with the same problem, mine was so bad that I had to floor the gasfor about 15 minutes driving around 3mph in circles till the transmission got warm, then bang it drove fine. Now this may not be it, so don't get your hopes up, just could be the problem like with me.

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Now you go to a repair shop, and have it diagnosed

You have other codes for the coils,forget the PO300

You will need someone good with ford ignition issues,
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I have a 2003 cvp. As I accelerate to get on the freeway, or under severe load, the check engine light blinks. Code was misfire in cylinder 6. A mechanic felt it was not the coil or the spark plug, but...


More than likely you have a misfire due to a coil. In 11 years of working at a ford dealer as a driveabilty specialist I have never seen a crown vic injector fail. If it has a misfire code again I would replace the coil and plug on the appropriate cylinder.

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