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4 Cylinder/Misfire cylinder #4

I have a 2001 Dodge Caravan with 4 Cylinder 2.4 Liter Motor.
I have had a misfire for over 7 months. The code Im getting is P0304 Misfire Cylinder #4.
I have Replaced: Coil Pack, plugs, wires, injectors, egr valve, injector wiring harness, fuel rail.
Still have the misfire.
I have spark in the coil, plugs and wires so I think that it is safe to rule out ignition.
I checked the compression and I have 180Psi in all 4 cylinders, so I think it is safe to rule out compression or internal damage.
Im thinking maybe the injectors arent getting power, maybe the harness is bad?
Im gonna pick up a noid light and check the power to the injectors.
Until then, does anyone have any tips or suggestions on what to try next?

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Posted on Jan 02, 2017

  • 89 Answers

SOURCE: I have a 2006 Dodge stratus. It has a misfire on #3 cylinder.

You might try running a compression check ?

Posted on Feb 25, 2010

  • 226 Answers

SOURCE: Misfire Code/Check Engine Light. Many Repairs,Cant Clear the code

My guess on this is gonna be a cracked ignition coil. Have it tested by someone. It is very common for these coils to crack and cause a misfire.

Posted on Feb 26, 2010

  • 1 Answer

SOURCE: Rough idle p0304 code. Light steady then flashes. many part repla

I also have the same problem with my 2002 caravan 3.3L. Misfire on cylinder #5 (P0305). Replaced ignition plugs & wires, intake manifold gasket, plenum gasket, fuel filter, air filter, cleaned fuel injectors, swapped fuel injector #5 to #1. After all these, I have no more DTC code but the symptom of misfire is still there, the idle is rough and I can feel the misfire even if I step on the gas when in park or neutral. Please let me know what to do next. Thanks!

Posted on Jun 16, 2010

  • 249 Answers

SOURCE: Dodge Caravan Fuel Injectors gone bad?

if you can get a good set of used injectors you should change all of them.

Posted on Nov 09, 2011

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