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in need of HELP

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  #11  
Old 02-07-2008, 12:26 PM
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Default RE: in need of HELP

do you have an aftermarket tuner? I have heard that some aftermarket tuners dump too much fuel and don't burn it off causing damage to things like the cats and o2 sensors.
 
  #12  
Old 02-07-2008, 12:47 PM
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Default RE: in need of HELP

for an easy fix, try putting that carb/injector cleaner in your next tank of gas...
 
  #13  
Old 02-07-2008, 12:57 PM
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Default RE: in need of HELP

best way to check for a damaged cat is to shake it.. if you hear any sort of rattle.. it needs to be replaced. misfire could be caused by so many factors, id start with the cheapest fix and work my way up until it disappears. good luck!!
 
  #14  
Old 02-07-2008, 03:40 PM
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Default RE: in need of HELP

theres no tuner on it. i have good flow through the exhaust...i guess ill start checking my plugs/wires. does anyone know where cylender 1 is on an 02 4.7? i dont have my manual
 
  #15  
Old 02-07-2008, 04:15 PM
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Default RE: in need of HELP

om well im going to check my spark plugs later today or tomorrow sometime...i read it could be the coil packs, plugs, wires, or even the cats.....it said if the cats are bad they would have low air coming out...it has a lot of air coming out but it smells very bad. im in desperate need for help!
 
  #16  
Old 02-07-2008, 05:21 PM
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Default RE: in need of HELP

take it to the shop and have them hook it up to a scanner. a reputable shop will do this for free. have them run it through data stream and tell you what all your specs are. they can tell you everything fromo2 senser output to exhaust flow and temp. they can also buzz all the injector to ensure there's no problem there. that will keep from throwing money at an unknown problem.
 
  #17  
Old 02-07-2008, 05:38 PM
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Default RE: in need of HELP

Before you start pulling the ignition stuff apart, try this. After it gets dark outside, or in the garage with the lights off, get a spray bottle with water in it. Spray the wires for the plugs with the engine running, if it looks like there is any sparking from the wires to the engine metal coponents, you need new wires. It kinda sounds to me like your wires are gone and you may be getting some cross firing, and/or grounding of the spark voltage to the chasis (engine). Simple check to verify wires.
 
  #18  
Old 02-07-2008, 05:42 PM
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Default RE: in need of HELP

ill try that trick tonight with the spray bottle. thanks, although i dont hink thats going to solve the problem ,but you never know. when i blew my water pump, i did have coolant fly everywhere so it could have shorted something out. also if i hook it up to a scanner at a shop...will this tell me EXACTLY what it is?
 
  #19  
Old 02-23-2009, 08:52 PM
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Originally Posted by mmstar23
so my truck blew a water pump last week, i fixed it and repalced the thermostat. works great.then i got an engine code P0051, turned out to be an 02 sensor, i replaced that today. the engine light went off for that, and also it did not help the truck. it still shakes at a certain rpm. and still sputters like its missing. the o2 sensor was supose to fix this problem and didnt. now on the way home the code P0301 came up...i believe this cylender 1 misfire. what do i do and why is my truck sputtering/missing. it also shake at about 1600 rpm and 47mph. major loss in performance. what do i do? please help. all help greatly appreciated.
Did you figure out what was wrong? Mine's the same way and I too blew my water pump. Hoping you found out the prob.
 
  #20  
Old 02-23-2009, 09:08 PM
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Originally Posted by mmstar23
om well im going to check my spark plugs later today or tomorrow sometime...i read it could be the coil packs, plugs, wires, or even the cats.....it said if the cats are bad they would have low air coming out...it has a lot of air coming out but it smells very bad. im in desperate need for help!
How bad? Rotten egg smell?
 



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