Okay, I'm back with another misfire code. I'm needing to get some ideas on where to go from here to get this stinkin' thing figured out once and for all.
Little history for you. Back in June of '16 I was having some misfire issues. At that time I was having a p0300 "random/multiple cylinder misfire" and a p0303 "cylinder 3 misfire". Swapped cylinder 3 coil pack to another cylinder, and the code did not follow.
I was planning on putting new plugs in it anyways, and there were a few non-Mopar coils on it so I went ahead and bought two. I put NGK copper 'OEM' spark plugs in it, gapped per the sticker under the hood. I replaced the non-Mopar coils with Mopar coils because I assumed they would be a problem at some point and I was already there anyways - so why not?
Got all of that done, cleared the CELs. Started driving it, went ahead and got it inspected while the light was out, after multiple driving cycles. Once it was legal I started driving it daily, and haven't really had much of a problem since - been happy with it since then.
Fast forward to a couple of days ago. I noticed a few times (I'm not sure if this has anything to do with the problem or not, but I'm throwing it out there in case it does and helps in diagnosis) when I would go to start the Jeep it would start, but immediately stumble and die. It would start but act like it didn't have everything needed to run. This only happened a few times, but seemed to be after I had driven it, parked, shut it off, then come back to get in it to leave. So mostly up to temp, parked, then started before fully cool. Again, not sure if that has anything to do with anything, but I want all the details out there.
Fast forward a few more days to today. I had been driving it around running errands pretty much all day. Went to go eat dinner with some family. Came back out to get in it and head over to their house. Jeep started right up but was running rough again, kind of looked down at the gauges and it instantly threw a CEL. After running it seemed to have evened out some, but the CEL was still on. Drove to their house and went in for a while. Came back out, after initial startup it idled rough again. Seemed to smooth out once it ran again. (Note: When I say smoothed out, I mean in comparison to the initial startup and idle. I'm not saying it did or didn't go away. It just had a very lopey idle initially and I didn't notice it in that degree after it ran a minute).
After all the festivities I came back home, plugged in the OBD scanner. It's showing p0300 "random/multiple misfires detected". Great.. No designated cylinder, just a random misfire code. So I have no cylinder to focus on, just a misfire that I want to solve. So here I am, before you, hoping for some help diagnosing this misfire. From doing a lot of reading I know everyone says coils and spark plugs (done and done). Then that seems to always be followed by crank sensor and cam sensor. Is this my next step? Looked online, look to be about $30 each for Mopar. Doesn't seem too bad.
I just want to know what steps I should take next. I just want to get this thing figured out and fixed. All help is appreciated.
Little history for you. Back in June of '16 I was having some misfire issues. At that time I was having a p0300 "random/multiple cylinder misfire" and a p0303 "cylinder 3 misfire". Swapped cylinder 3 coil pack to another cylinder, and the code did not follow.
I was planning on putting new plugs in it anyways, and there were a few non-Mopar coils on it so I went ahead and bought two. I put NGK copper 'OEM' spark plugs in it, gapped per the sticker under the hood. I replaced the non-Mopar coils with Mopar coils because I assumed they would be a problem at some point and I was already there anyways - so why not?
Got all of that done, cleared the CELs. Started driving it, went ahead and got it inspected while the light was out, after multiple driving cycles. Once it was legal I started driving it daily, and haven't really had much of a problem since - been happy with it since then.
Fast forward to a couple of days ago. I noticed a few times (I'm not sure if this has anything to do with the problem or not, but I'm throwing it out there in case it does and helps in diagnosis) when I would go to start the Jeep it would start, but immediately stumble and die. It would start but act like it didn't have everything needed to run. This only happened a few times, but seemed to be after I had driven it, parked, shut it off, then come back to get in it to leave. So mostly up to temp, parked, then started before fully cool. Again, not sure if that has anything to do with anything, but I want all the details out there.
Fast forward a few more days to today. I had been driving it around running errands pretty much all day. Went to go eat dinner with some family. Came back out to get in it and head over to their house. Jeep started right up but was running rough again, kind of looked down at the gauges and it instantly threw a CEL. After running it seemed to have evened out some, but the CEL was still on. Drove to their house and went in for a while. Came back out, after initial startup it idled rough again. Seemed to smooth out once it ran again. (Note: When I say smoothed out, I mean in comparison to the initial startup and idle. I'm not saying it did or didn't go away. It just had a very lopey idle initially and I didn't notice it in that degree after it ran a minute).
After all the festivities I came back home, plugged in the OBD scanner. It's showing p0300 "random/multiple misfires detected". Great.. No designated cylinder, just a random misfire code. So I have no cylinder to focus on, just a misfire that I want to solve. So here I am, before you, hoping for some help diagnosing this misfire. From doing a lot of reading I know everyone says coils and spark plugs (done and done). Then that seems to always be followed by crank sensor and cam sensor. Is this my next step? Looked online, look to be about $30 each for Mopar. Doesn't seem too bad.
I just want to know what steps I should take next. I just want to get this thing figured out and fixed. All help is appreciated.