Question about 2001 Ford Crown Victoria

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1998 crown vic police. Had check engine light with misfire code to cyl 3, 6, 7, 8. Changed plugs and new coil packs. The car still shows misfire codes and still runs bad. Any ideas?

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Your egr on that side is dirty try cleaning it aslo check intake boltsaround those clyinders.

Posted on Jun 21, 2009

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I have a 1996 crown vic i need to know these trouble codes po301 po304


PO300 Codes-- are cylinder misfires

PO301 thru PO308

Last # is the cylinder

Could be bad ignition coil for a cylinder
or a coil pack for that side,depending what
engine you have

#1 &#4 are at the front & back of the passenger
side of your motor or firewall side if transverse

You will need to provide details of who worked on it
& exactly what was done besides replace a coil based
on a code

Codes aren't very good with COP Ignition but a complete
coil pack on one side should take care of some issue

Vacuum Leaks & other items can cause misfires & the codes
don't tell you to replace ignition parts as you may have

Feb 14, 2013 | 1996 Ford Crown Victoria

3 Answers

I have a 2001 Focus that is showing a #3 misfire, changed the spark plugs and wires and it is still running rough? What next?


had the same thing with my crown vic on the #8 cylinder. changed plugs and wires. still missing. wound up replacing the coil pack. you can check resistence of the coil between companion spark plug towers. ford marks each tower with 2 cylinder #'s. resisistence should be around 10-12 ohms

Mar 15, 2010 | 2001 Ford Focus

1 Answer

How can i check my coil pack on a 1998 f 150 4.2


measure resistence between companion outputs. they should be marked on the coill pack.12 ohm nominal. mesasure the resistence of the input terminal. 3 ohm nominal. i recently had a coil pack go bad on a '97 crown vic where the number 8/2 tower was reading good resistence when i kept the meter probe steady. if i moved it around while still making contact, it would change. i was getting a cyl. 8 misfire and found a bad wire and the plug was worn funny, so i changed the plugs and wires. this did not fix the underlying problem. the bad coil pack. the vehicle was misfiring at cruise but upon acceleration no misfire was apparent. what are the symptoms the truck is displaying

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What would cause 3 of the 6 plugs to misfire. 1998 buick century 3.1 . thanks


Check for trouble codes and check spark control module and coils

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2003 Ford Crown Vic Misfire


usaly plugs & wires but I would get that coil tested before I do wire and spark plugs! if coil is good wire and plugs! hi milage???

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Ford Crown Vic p0300 random cylinder misfire


take a look at the EGR valve it could be either vacum controlled or electronic either way what seems to be the problem is that the valve is stuck in the open position until the engine warms up you can gently tap the egr valve with a small hammer or a screw driver and you can see that it runs smooth, now if the egr valve is vacum controlled replace the valve. if it is electronoc controlled replace the valve and the module for the egr valve.

Nov 02, 2008 | 2000 Ford Crown Victoria

2 Answers

Engine light po 300 code


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

Sep 06, 2008 | 1999 Ford Crown Victoria

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