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Father of 3
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Discussion Starter #1 (Edited)
My 91 4.3 just started to act up on me. It will not start unless I push the pedal down about a 1/4 inch. The truck has 210k on it with fairly new cap/rotor, plugs, and wires. There are no vacuum leaks that I can find. I also replaced the intake gaskets about 10k miles ago. New battery installed as well. The fuel pressure regulator is also fairly new. There are no codes present so I am lost. Could it be a IAC valve or a TPS sensor? Would'nt they throw a code out? Thanks
 

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Hey, i was having hte exact same problem on my 95 blazer. I changed the TPS sensor and reset my computer and have had no problems since. hope that helps!!
 
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