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08-16-2012, 12:47 AM
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#1
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Intrepid Modder |
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Join Date: Apr 2011 |
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Year: 2000 |
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Wooohoooo P0300!!!!!!!!!!!!!!!
Eh not really, but I was driving around today and the check engine light came on so I went ahead and did the key dance and thats what popped up. So I popped the hood to do a quick inspection of my engine and found that the hose from the intake to the passenger side valve cover had ripped and almost fallen off of the intake. Could this be causing the code or do I need to dig deeper?
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08-16-2012, 06:44 AM
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#2
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Intrepid Pro |
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Join Date: Feb 2002 |
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Virginia, U.S. |
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Check your PCV valve and its hose(s) too. Replace as needed.
Hose may or may not be related to the 0300 code.
Last edited by peva; 08-16-2012 at 06:41 PM..
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08-16-2012, 01:20 PM
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#3
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Intrepid Modder |
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Join Date: Apr 2011 |
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Year: 2000 |
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| Quote: |
Originally Posted by peva
Check your PCV valve and its hose(s) too. Replace as needed.
Hose may or may not be related to the 3000 code.
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Checked the PCV. Hose was still good, there was some crud starting to form by the valve itself. I'd imagine that means its replacing time
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08-24-2012, 03:34 AM
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#4
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Intrepid Modder |
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Been kind of busy recently but I got the hose replaced that runs to the intake and I still have the misfire but no check engine light. PCV valve replacement should be getting done tomorrow along with installing a new A/C belt. Might even check out the water pump and such just to see how that stuff is going just because I will have the whole front torn off anyway.
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08-24-2012, 03:27 PM
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#5
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Intrepid Pro |
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P0300?? IDK what that one is.
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08-24-2012, 03:32 PM
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#6
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Intrepid Modder |
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| Quote: |
Originally Posted by 95intrepid99kid
P0300?? IDK what that one is.
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It's the random misfire code...
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08-26-2012, 12:04 PM
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#7
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Intrepid Newbie |
Join Date: Aug 2012 |
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NC |
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Take it for a drive and try to hold the engine at the rpm is misfiring the most at. As soon as the pcm registers so many misfires it will trip the codes you want. P0300 being a random and a p030? with the ? being the affected cylinder number. Ive had many cars come running rough and a quick test drive doing the above will always get the codes i want. If you had a decent scan tool it would let you look at pids data such as individual cylinders and see the mosfire count.
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08-26-2012, 10:37 PM
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#8
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Intrepid Modder |
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| Quote: |
Originally Posted by Sycoholic
Take it for a drive and try to hold the engine at the rpm is misfiring the most at. As soon as the pcm registers so many misfires it will trip the codes you want. P0300 being a random and a p030? with the ? being the affected cylinder number. Ive had many cars come running rough and a quick test drive doing the above will always get the codes i want. If you had a decent scan tool it would let you look at pids data such as individual cylinders and see the mosfire count.
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Well the thing is its the worst at the 500 RPM mark so even when I let it idle there for long enough it doesnt bring up any new ones.
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08-26-2012, 10:42 PM
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#9
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Intrepid Pro |
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Have you checked your plugs yet?
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08-26-2012, 10:52 PM
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#10
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Intrepid Newbie |
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NC |
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I would pull at least 2 plugs, 1 from each bank. Check gap and condition. If they got some mileage on them it's possible they're breaking down now. I've also seen people install standard plugs where platinum is required. They never run right and if they do, not for long.
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08-27-2012, 01:56 AM
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#11
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Intrepid Modder |
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Join Date: Apr 2011 |
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Omaha, NE |
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| Quote: |
Originally Posted by Sycoholic
I would pull at least 2 plugs, 1 from each bank. Check gap and condition. If they got some mileage on them it's possible they're breaking down now. I've also seen people install standard plugs where platinum is required. They never run right and if they do, not for long.
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Alright I will go ahead and check some of them. The plugs have just a little over 2,000 miles on them now but I will check 'em anyway. Still gotta pull the front off and put another belt off and check the water pump condition
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08-27-2012, 06:04 AM
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#12
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Intrepid Pro |
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| Quote: |
Originally Posted by Sycoholic
...I've also seen people install standard plugs where platinum is required. They never run right and if they do, not for long.
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Single plat should do it - double plat doesn't buy you anything extra since these are fired single polarity.
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08-28-2012, 01:54 AM
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#13
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Intrepid Modder |
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Join Date: Apr 2011 |
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Well all I got done today was getting the check engine light to come back on! I was a little happy to see it coming back on but dissapointed to see that after the key dance it was still just P0300 in there. I guess I will take it in for a scan.
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09-17-2012, 11:41 PM
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#14
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Intrepid Modder |
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Join Date: Apr 2011 |
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Alright so tomorrow should be the day stuff gets done (schedule permitting). Gonna pull some plugs, Replace PCV, and via recommendation from another site( http://repairpal.com/OBD-II-Code-P0300(scroll to lean misfire)) checking EGR, MAF, and the fuel filter. Hopefully after running through these, one of them is the problem (I'm rooting for one of the cheaper ones).
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09-18-2012, 11:38 AM
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#15
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I've been helping my neighbor with the same random misfire on his 04 300M. Googled "Chrysler random misfire" and it pointed to a bad "auto shutdown relay", crank position sensor, cam position sensor.
Replacing the plugs did nothing. We replaced the ASD relay two days ago and so far so good. If that fails, we'll move on to the crank position sensor, then cam position sensor.
Last edited by stlrj; 09-19-2012 at 05:52 PM..
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Wooohoooo P0300!!!!!!!!!!!!!!!
