04 5.7L throwing P0205 and P0206 codes ARRGGGHH!!! - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
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#1 Old 11-30-2009, 03:28 PM
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04 5.7L throwing P0205 and P0206 codes ARRGGGHH!!!

Yep, first post is a question. The good news is my current 04 is my 4th Ram and this is the first major issue I've ever had!!

Ok. I have a 2004 Quad with a 5.7L and 110K on it. All of a sudden last week I cold started it and it developed a horrible miss and stumble like it wasn't running on all cylinders. In order to drive it, I had to keep the rpms up over 1500. It still was running rough and only 1/2 power, but at least it would run. If I took my foot off the gas, it would stall. I ran it at 55 mph for about 5 mintues then shut it off and restarted it - the stumble went away and it ran fine. I drove it 240 miles home from up north with no issue. The next day I'm picking the kids up from school and all of a sudden the stumble is back. I take it to Auto Zone and it's throwing P0205 and P0206 codes. I figure bad injectors so I took it to my professional mechanic buddy (drove it 40 miles missing and stumbling) and he replaced the injectors but it's still not running right.

Any thoughts? Since it's cylinders 5 and 6 and throwing an injector circuit code, it couldn't be valve springs, correct? My buddy is stumped and I don't want to start replacing expensive control modules if there is an easy answer.

Thanks for the help in advance.
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#2 Old 11-30-2009, 03:33 PM
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POSSIBLE CAUSES


Good trip equal to zero
(K342) ASD Relay output circuit
Fuel injector
Injector control circuit open
Injector control circuit shorted to ground
PCM


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BT Catch Can - FRI LilBoy Cam - Magnaflow Exhaust - Vortech V-3 Blower - Johan Tuned - Stage I Injectors - Aero340 Fuel Pump - Eibach Lowering Kit - Boost/AirFuel/Fuel Pressure Gauges.

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#3 Old 11-30-2009, 03:35 PM
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Best thing to do is take it to a shop and have them figure it out... You need to hook up a scanner, or start by checking the voltage of the injectors and harness..
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File Type: gif injector.gif (7.1 KB, 2 views)


2006 Jeep GCSRT8 6.1L AWD

BT Catch Can - FRI LilBoy Cam - Magnaflow Exhaust - Vortech V-3 Blower - Johan Tuned - Stage I Injectors - Aero340 Fuel Pump - Eibach Lowering Kit - Boost/AirFuel/Fuel Pressure Gauges.

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#4 Old 11-30-2009, 03:44 PM
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Thanks for the quick reply.

My buddy runs a shop out of his garage (closed the family 'official' garage a couple years back when his father passed away) although I'm not sure if he owns all the latest and greatest gizmos and gadgets. We are hoping that it is something simple rather than drag it across town to the dealer. He does have the hand held sensors though....

I just spoke with him and he's checking the voltage across all the injectors to make sure the juice is getting there. What component is next up the chain? Do they run straight into the PCM or is there a module just for the injectors?

Forgive these probably obvious questions. I personal have never dug into a 5.7L other than regular maintanence and I think this may be his first time with an issue like this also.

Thanks again.
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#5 Old 11-30-2009, 03:47 PM
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Yeah Ive never heard anything like it... So I dont really know where to help you out at... but it also says to check the PCM / connections.. for corrosion, as I think on the hemi the injector pulse comes strait from the pcm


2006 Jeep GCSRT8 6.1L AWD

BT Catch Can - FRI LilBoy Cam - Magnaflow Exhaust - Vortech V-3 Blower - Johan Tuned - Stage I Injectors - Aero340 Fuel Pump - Eibach Lowering Kit - Boost/AirFuel/Fuel Pressure Gauges.

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#6 Old 11-30-2009, 03:50 PM
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not sure what guidelines he is going by, but this is where I would start..
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2006 Jeep GCSRT8 6.1L AWD

BT Catch Can - FRI LilBoy Cam - Magnaflow Exhaust - Vortech V-3 Blower - Johan Tuned - Stage I Injectors - Aero340 Fuel Pump - Eibach Lowering Kit - Boost/AirFuel/Fuel Pressure Gauges.

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#7 Old 11-30-2009, 03:56 PM
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yep
injector 5 circut
injector 6 circut

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#8 Old 11-30-2009, 03:57 PM
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Awesome. Thanks for the info. I just relayed the it and he's going to try this test procedure....
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#9 Old 11-30-2009, 03:58 PM
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let us know


2006 Jeep GCSRT8 6.1L AWD

BT Catch Can - FRI LilBoy Cam - Magnaflow Exhaust - Vortech V-3 Blower - Johan Tuned - Stage I Injectors - Aero340 Fuel Pump - Eibach Lowering Kit - Boost/AirFuel/Fuel Pressure Gauges.

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#10 Old 12-02-2009, 06:49 AM
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I'm planning on getting back to figure out this mess after work today and I have 2 more quick (I hope) questions to help determine my issue.

1) is it possible for the PCM to have intermitent issues? This problem arose, then went away for almost 300 miles before coming back

2) does anyone have a wiring schematic showing the pigtail coming out of the PCM to the injectors? I'm wondering if #5 and 6 are on the same pigtail. If this is the case, I'm gonna say it's a dang good possibility I have a ground issue somewhere.

Thanks!!
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#11 Old 12-04-2009, 09:29 AM
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Still not figured out, but getting closer. I had to take it to my local stealership since the pcm for this vehicle is only available through the dealer and needs to be flashed in the vehicle (so I was told). It's a good thing I did take it in since the pcm appears to be ok (according to the dealer). They now think it's either a bad valve or collapsed lifter. I'm not so sure since there is no clatter or noise that usually occurs with something like that.....perhaps a bad valve spring. Who knows. I'll post up once it's solved.
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#12 Old 12-04-2009, 01:56 PM
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Solved!!!

Well, I'm not happy, but at least it's fixed. It was a bad intake valve spring. So a $10 part cost me $900. The stealership charged me $650 (8+ hours of diagnosis) and I gave my mechanic buddy $250 his parts and time. I still don't get why it threw up a P0205 code. That's what threw everyone off on the diagnosis. I guess the lesson learned is don't trust computers.......
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