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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 08-12-2012, 10:18 PM
aaronmiiller aaronmiiller is offline
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Join Date: Jul 2011
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Vehicle: 2006 Dodge Ram
Trim Level: Big Horn SLT
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Default Serious unusual problem

So i have a new magnaflow exhaust, had my mechanic cut off the cats and resonators while he was doing it. Now i have major problems. I purchased nofouls for both downstream 02 sensors, drilled one our and installed as usual and as i have done in the past to clear my check engine light. This did not work. So i took it apart and stuffed some steel wool in to solve the problem, yet it STILL did not work. I took it apart again and stuffed alot of steel wool deep into the first nofouls. This time i have major problems. Not only is the truck running like garbage all of a sudden but im also getting 3 different codes! P0153, P0420, and P0300!!! The P0300 is my main concern, what would be the reason for throwing this code (Random/Multiple Cylinder Misfire)? Any help at all i would greatly appreciate.
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Old 08-13-2012, 03:36 AM
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chefred112 chefred112 is offline
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give us more detail of the truck itself..year? engine?
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-fast freddie- one quick 05 hemi qc...with over 250k miles on odo... on the 5.7, stoker 6.4 now...Inertia Motorsports 392 stroker
5.7 e.t.'s: 1/8 - 7.85@93.20, 1/4 - 12.10@113.96 juice - 12.96 NA... 6.4 e.t. 12.59@106 NA
2005 Dodge Ram 1500 QC SLT: 12.107 @ 113.960 MPH
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Old 08-13-2012, 09:38 AM
aaronmiiller aaronmiiller is offline
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Join Date: Jul 2011
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Vehicle: 2006 Dodge Ram
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Default

06 ram big horn 5.7 last night I took all the steel wool out of the 1st down stream sensor no fouls. Too it for a drive and immediately it runs great. Now my only problem is I'm throwing code P0420. I'm guessing the sensor farthest down stream is working fine since I'm not throwing P0430? Any suggestions? I was thinking about adding a 3rd no foul.
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