could a bad coolant temp sensor, egr or map sensor cause lack of power, slow pickup of speed when I slowing let off on the pedal. I get a pop through the TBI when I gun it and want to stall. and also been wanting to stall and rough idling. please,want some one answer me.
 
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Question: no catalytic convertor on 1988 blazer 4.3. what can happen to drivablity/ no codes .
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