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  #1  
Old 01-19-2011, 09:04 AM
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Angry misserable chevy blazer 2003 4.3 vortex

have a problem getting any power idles perfect 60 lbs at fuel rail replaced
MFA sensor,fuel filter and a new fuel spider assemble and I still get the same thing also is there a way to read codes by the check engine lite don't have money for code reader
 
  #2  
Old 01-19-2011, 09:25 AM
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Most parts stores can check it for you. If not they usually rent them.
 
  #3  
Old 01-19-2011, 10:23 AM
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Might be time for a new cat, though get the code(s) read first.
 
  #4  
Old 01-23-2011, 07:39 AM
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Default mass air flow sensor

try unplugging your mass air flow sensor - the engine will kick into a default mode without the sensor and if it runs better without it then have yours tested.

worked like a charm for me - mine had no power above 45 mph, valves rattleing at 3500 rpms, transmission acted like it was shot - wouldn't downshift right.
 
  #5  
Old 01-25-2011, 05:11 AM
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Default mafs

Originally Posted by snowman5x View Post
try unplugging your mass air flow sensor - the engine will kick into a default mode without the sensor and if it runs better without it then have yours tested.

worked like a charm for me - mine had no power above 45 mph, valves rattleing at 3500 rpms, transmission acted like it was shot - wouldn't downshift right.
Thank you Snowman5x,
I all ready put a new one in iam thinking its the catalic converter
 
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