Ticking clicking sound, codes P0353 and P0356

FIXITJAMIE09

MEMBER
2002 DODGE DURANGO
4.7L
V8
4WD
AUTOMATIC
275,000 MILES

I have tried switching coils that I know are good but the code still stays with third and sixth cylinders. When I cleared the codes and start it the codes come on quickly and the check engine blinks. I do hear a clicking sound from underneath the truck. I hope this is clear enough to help me.

4 Replies

KASEKENNY

MECHANIC
18,907 POSTS

I assume you are saying you have a misfire on 3 and 6 with these two codes? If so, I attached the testing for cylinder 3. It is the same test for each so I only did one.

There are a number of things that can cause this including the ASD so we need to run through this test and see what we come up with. Let me know what you find and if you have questions.

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Sunday, March 8th, 2020 AT 3:03 PM

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

The Direct Trouble Codes for your vehicle are actually P0303 and P0306 respectively, which are misfires in cylinders 3 and 6. The fact that the Malfunction Indicator Lamp[MIL] is flashing means that these are Class A misfires, which are far more serious than the Class B misfires and are described as "Catalyst damaging events" and need to be resolved immediately. The ticking could be due to the high voltage coming from the ignition coils arcing on these two cylinders. You are going to need to remove and inspect the Coil On Plugs[COP][s] for both of these cylinders as well as the spark plugs. In fact I would recommend changing all of the COP's and spark plugs. This should take care of the problem. When inspecting the COP's look up inside the boot and look for white marks or lines. The same on the spark plugs. These are known as carbon tracks and it will be where the ignition voltage, around 30,000 Volts DC is arcing across and not making it to the spark plug. In the diagrams down below I have included the directions for the removal and installation of the COP's as well as the spark plugs and have included spark plug gap information for you as well. Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros

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Sunday, March 8th, 2020 AT 3:11 PM

FIXITJAMIE09

MEMBER
5 POSTS

I do nof have a DBRIII to do an ugh readings on. I do have a OBD scan tool. This is what it is showing me: P0353 $10 (Generic) Ignition Coil C Primary/Secondary Circuit. And P0356 $10 (Generic) Ignition Coil F Primary/Secondary Curcuit.
I turn mh key 3 times to read the codes and it also shows P0353 and P0356. I need to be clear on the flashing check engine light. It actually takes a few seconds until it BLINKS. I turn the key to the on position and the check engine light is solid for a few seconds then it will start blinking 11 times and then blinks quickly for the 12th and stays solid. I have put new spark plugs in on all cylinders and I have replaced just the COPs that are in question the 3rd and 6th COP. There is no sign of white lines on the old Coils or any white on the old plugs. I have the new plugs gaped at.040 as said in the picture above, and they are torqued to specification. I'm confused by the codes that you said p0303 and p0306. My scan tool does not show those codes. Are those codes for the fuel injectors I am not sure. Any way I am still having the same problem codes pop up even after I changed the plugs and the two COP's. Is there any other tests I can attempt without having a DRBIII or am I bumming?

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Sunday, March 8th, 2020 AT 10:36 PM

KASEKENNY

MECHANIC
18,907 POSTS

The P0303 and 0306 are just general misfire codes. Your codes are pointing specifically to the coil driver circuit. Unfortunately you need a scan tool that is capable of doing what the DRBIII does by actuating the relay. However, if you don't have that, just skip the step and go to the other testing and check the wiring. I suspect your issue is going to be a wiring issue to the COP or the PCM itself. If you look at the last page that I attached it shows you the possible causes and 5 of them are wiring issues and the other are the COP and PCM. So we need to run through the wiring testing portion of these steps.

Let me know if you have questions. Thanks.

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Monday, March 9th, 2020 AT 6:25 PM