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Discussion Starter #1
This is my second post about the same problem still haven't found what's wrong. I have a 93 EB im only getting about 3-5 mpg. It feels like i have a bucking and it's really hesitant on acceleration. And just recently every once in awhile when im starting it, it drops rpms sputters and wants to die until i give it gas the check engine light comes on for about 30 sec and turns off the only code that came up was o2 sensor running rich.
 

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Discussion Starter #3
Not yet I've been told it could be multiple problems and most likely isn't the sensor. That whatever problem im having is most likely making me run rich which the o2 sensor is picking up and making it throw the code.
 

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Check the fuel pressure sounds like your regulator has taken a crap.
 

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Discussion Starter #5
after replacing multiple thing including the fuel pump fuel sender tps and a few other things. it ended up being something simple as always it was a bad o2 sensor and a bad egr solenoid.
 
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