2001 Chevrolet Blazer Q&A
2001 Chevrolet Blazer Question: Could this be a Throttle position sensor problem? Or something else.
it could be many things. but you can start by replacing fuel filter if over 2 yrs since last filter changed. need to check fuel pressure and check fuel pump. - ebans777
Check the EGR valve. I've seen carbon keep the valve open causing rough/surging idle and stalling - innova92614