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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 11-11-2010, 07:25 PM
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justincpowell justincpowell is offline
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Default Ram is messing up.

well the other night it died on me in a turn(that was fun)
earlier that day it didnt fire up to 1500 rpm and idle down. it kinda coughed up to 800 rpm. so i held the rpm at 1000 then let off. it surged then so i let it simmer down i started it again. she did fine.
i went to work and after work is when she died.
when i leave stop signs she trys to surge and feels like she wants to die.
codes where for the o2 sensors, my cats are cut off. and egr high resistance. so i cleared them with my raggaedy scan tool and went to the shop so i could use the 5,000+$ scan tool. thats a 30 mile drive over a highway, through a twon, and on a bypass.
she never kicked a code then and i spent three hours in the shop with it and over an hour of the time she was at idle. then i went to work, then home and it wasnt until i was a mile from home that the MIL came back on. and its just o2 sensor codes.
my oil pressure is dead center, my temp is perfect, and im no seeing it use any coolant. now i noticed from day one that the oil filler cap has some oxidation on it. it smells horrible but the oil always comes out fine. i did see some creamy mix on it this time but im not using water so im not thinking its a blown head gasket. plus the oil is perfect on the bottom.
i checked my fuel pressure, it was fine, so i hit the drain valve on the gauge and i check it for water. there was a few small bubbles but no where near enough to cause this.
i brought up the datastream and 2/1 o2 sensor was staying at -0.11 volts and did not change so i know its bad. and i ordered an egr valve just incase.
bank 1 feed back is staying open and two is closed.
i did see that my pcm only has 8,000 miles on it. ive owned the truck for 6,000 miles and shes at 88,000
anyone have any idea?
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Old 11-11-2010, 08:01 PM
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ok well this what happened to me. I was at work truck was fine turn on ran fine. Then all sudden i turned truck off unload some garbage then it died. No radio no thing. I was like WTF!! took the terminals off leaned them. Then all sudden it worked fine. Try that maby clean the battery terminals worked for me. Also you know where your pcm is? look at this
http://dodgeram.info/Engine-Gas/OBDI/pcm_fault_code.htm
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Old 11-11-2010, 08:24 PM
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The EGR valve isn't likely to be an issue and the moisture you're seeing in the oil cap is condensation. I'm betting the O2 sensor will fix it since what you describe sounds like a lean condition and the PCM is trying to pull fuel off the right bank.
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Old 11-11-2010, 11:10 PM
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if you get 1/1 or 2/1 O2 sensor errors...those are the problems and should be replaced...the 1/2 or 2/2 are the ones that monitor the cats and they do nothing else but monitor....the front ones will monitor but can make the pcm do funky stuff if its defective
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Old 11-11-2010, 11:13 PM
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Mike, any upstream O2 issues is a dead giveaway for a truck runnin like shit.. what Randy said is dead on..
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Old 11-11-2010, 11:14 PM
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Quote:
Originally Posted by RamTech View Post
The EGR valve isn't likely to be an issue and the moisture you're seeing in the oil cap is condensation. I'm betting the O2 sensor will fix it since what you describe sounds like a lean condition and the PCM is trying to pull fuel off the right bank.
well if my EGR is stuck wide open it will lean it out. and all my troubles are at lower RPM's so this could in some instances be the EGR. however i havent pulled a vaccum on it yet because time is not my friend but i figure just incase it is a problem id order it. ill get the bosch exact fit o2 sensor. and BWD egr valve for 50 bucks(i love my job for that reason) it wouldnt hurt
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Old 11-11-2010, 11:23 PM
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Quote:
Originally Posted by chefred112 View Post
if you get 1/1 or 2/1 O2 sensor errors...those are the problems and should be replaced...the 1/2 or 2/2 are the ones that monitor the cats and they do nothing else but monitor....the front ones will monitor but can make the pcm do funky stuff if its defective
10-4 when i was looking at my datastream a buddy looked at it and said my down stream o2 sensors arent working right. i looked at him and said "theyre lucky that they didnt get cut the **** off" but yeah ive got one dead one and the other is kind of lazy but my warehouse didnt have enough for me to get both upstreams so ill replace the bad one then the lazy one. besides at 88,000 miles i expected one to go bad. 60,000 is the life of most o2 sensors. so does anyone know why i cant view EGR operation with my scan tool? lol i can operate it with special functions or anything. to anyone that has or uses the Dodge scan tool can it do so?
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