I have a 95 chevrolet c1500 pickup with a 4.3 V6 automatic that will not run without feathering the gas and has a severe hesitation. Issue started 4 days ago, and has continually gotten worse. Flashed a code 44, O2s low voltage. I have replaced the o2 sensor, map sensor, temp sensor, idle air control, entire distributer, and the main computer (but not the PROM). I reset the codes, and it now shows no codes but still does not run without the same severe hesitation. Entire exhaust was replaced 6 months ago, including the cat. Fuel pressure good at the throttle body. Any assistance or guidance given is greatly appreciated.
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Sunday, December 15th, 2013 AT 11:31 AM