Codes P0300, P0301, P0304 and P302

TONY2NAN

MEMBER
2008 CHRYSLER TOWN AND COUNTRY
4.0L
6 CYL
2WD
AUTOMATIC
126,000 MILES

I have the van listed above it is the limited model. It starts up okay, but once I drive it a few miles it drives rough, it might shut off while I am driving, the check engine light will come on and flash for a while then go out. This pattern will continue until I make it back home. When I scan for faults, I will get misc. Misfire code P0300, P0301, P0304 and P302. And sometimes there will be no code at all. All spark plugs have been change and all coils have been replace. The van's PCM has been replaced. I am still getting misfire fault codes. Next I was going to try replacing the crankshaft position sensor but can seem to locate it and how to remove it.

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Yes, that is what I was going to say the classic crankshaft angle sensor problem. Here is a guide to help you see what you are in for when changing the sensor out:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Here is the location for your car I have included all engine options. Might need to jack up your car.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Check out the diagrams (below).

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

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Saturday, March 31st, 2018 AT 12:05 PM

TONY2NAN

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3 POSTS

Thanks so much for the help. The images and instructions were great. I was able to find the crankshaft sensor and was able to get at it from under the hood. Unfortunately, as I was pulling it out the connector end of the sensor broke off and the base of the sensor is still in the housing. So, I am trying to figure the best plan of action for removing it. I have sprayed penetrating oil round it hoping to loosen the housings grip.

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Saturday, March 31st, 2018 AT 4:39 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

We have used a small drill and make a hole then use a wood screw and tighten this will give you a handle to help get it out with. Try not to push it further in but if it does drop into the pan no worries it will sit there just fine. You just need to make sure it get all the way down there turn the engine over by hand before you start it.

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Sunday, April 1st, 2018 AT 4:01 PM

TONY2NAN

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3 POSTS

Thank you again. I honestly thought I was in big trouble when that sensor broke off, but what you told me to do worked out. By drilling hole in the sensor and screwing a screw in the hole. I used crowbar and hammer to tap the head of the screw outward. I was able to retrieve the remaining part of the sensor intact.
I installed the new Duralast crankshaft sensor, which was purchase AutoZone. When I test drove the car the check engine light begin to flash almost immediately and I could feel some hesitation. The light would flash then go out and flash again. When I scanned the Van I got P0304 which is the same code I was getting before I replaced the sensor. Any ideas of what I could try next.

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Tuesday, April 3rd, 2018 AT 7:26 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

P0304 is a misfire on #4 cylinder. We should do a full tune up. Please follow this guide

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please let us know what happens.

Cheers, Ken