Question about 1996 Ford Crown Victoria

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P0304=misfire in cylinder 4. coil? spark plug? spark plug wiring. 1999 crown vic 4.6 V8. runs ok, just little cutting out every now and then.

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  • richard14499 Oct 29, 2008

    MY 1999 Ford Crown Vic has the ignition coil on top of each plug. I have had to replace two in the last month. This seems to have fixed the problem. Thanks to everyone who responded.

  • Anonymous Mar 21, 2014

    spark plugs keep getting wet on 93 crown vic. i checked the oil and no antifreeze is present

  • Anonymous Mar 21, 2014

    spark plugs are wet on 93 crown vic but no antifreeze in the oil any suggestions??

  • Anonymous Mar 26, 2014

    how can I get the spark plug out on number 7 with coil my van a 2000 E250 and looks like steel line over the top

  • Anonymous Mar 26, 2014

    water getting to spark plugs makeing cylinder 3 misfire

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Check the egr valve

Posted on Oct 29, 2008

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  • 69 Answers

Not coil coil it wouldnt fire at all it is either a plug or a wire replace the wire and plugs and that will fix it

Posted on Oct 06, 2008

  • Erick Beckwith Oct 29, 2008

    no problem knew it had to be the coil

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1 Answer

1999 Nissan Sentra 1.6L sets p0304 code


check that your spark plug wires are all secured tight. the far right cylinder is giving you the issue, cylinder #4. Is the engine light flashing while the car is running? if it isnt flashing, then its a past code and isnt misfiring anymore. if the engine light is flashing, you either have a bad plug wire, or a bad ignition coil/distributor.

Oct 12, 2014 | 1999 Nissan Sentra

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Code po304 car wont start


cylinder 4 misfire ,now if this is a GM product then i think you may need a reconditioned ECU init as if this is the 4 cyl engine and its same as the opel astra and zafiro and the vectra then its a common fault with a 2000 to 2004/5 model the computer is bolted to the engine inlet manifold and very weak and susceptable

Feb 06, 2012 | 1996 Saturn SL

4 Answers

Got a p0304 code come up on my 2002 olds Bravada, replaced camshaft and it still didnt fixed it?


P0304 Code - Cylinder #4 Misfire Detected
A P0304 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #4.

Symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes: A code P0304 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.


Hope helps.

Apr 09, 2011 | 2002 Oldsmobile Bravada

2 Answers

I have good plugs & wires,coils,new EGR.Still getting that code(P0304) do I need a new O2 sensor as well


P0304 is a #4 cylinder misfire. Swap the plug, coil and wire with a different cylinder to see if the code changes to that cylinder or stays with cylinder #4. If the code stays, the fuel injector will need to be replaced. If the code follows the components you changed then your problem is in the components and you can do further swaping of each indiviual component to determine the bad part.

Dec 21, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

I have a 1996 crown vic i need to know these touble codes po305 po304


P0304 means that cylinder 4 has a misfire and P0305 is a cylinder 5 misfire. What this means is you may have bad spark plugs, or bad plug wires, or you may need to replace your distributor cap and rotor. I would start with plugs and wires.

Oct 21, 2010 | 1996 Ford Crown Victoria

1 Answer

Getting a code P0304 on my 1999 Dodge 1500 5.2L.I changed my spark plugs, wires, cap and rotor about 3-4 mos. ago and have had my check engine lite come on three different times and stay on for 3-4 days at...


the code that is given means that the coil, plug ,plug wires, for that cylinder could be bad, check spark plug and see if this is the problem or a bad wire.

Nov 14, 2009 | Dodge Pickup Cars & Trucks

4 Answers

5.3 L Missing and Rough Idle Intermittently


i have a 2001 chevy z-71 5.3L. I keep getting a random/multiple misfire code for cylinder 1 . I have replaced plugs, wires, coil pack(only on #1 cylinder)., and fuel pump. I still keep getting the cylinder 1 misfire code. I put truck on a scanner and watched the cylinders. # 1 misfires at idle but quickly stops misfiring at around 1000 rpms. you can here the engine miss at idle but truck runs great on road . anyone else ever had this problem?

May 05, 2009 | 1999 Chevrolet Silverado 1500

4 Answers

Cylinder 4 misfire on a 2000 crown victoria interceptor


first cylinder 4 is the last on the passenger side . first pull the coil out and check if there is water where the plug is. if there is take the water out and dry up the coil. if you find water you got a crack manifold or a bad intake manifold gasket. if there is no water replace the coil. good luck

Apr 10, 2009 | 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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