JimR
Charter Member
My son came home last night from D.C. with my 2000 Blazer S-10 4.3 V6. The engine light was on. I took it down and had it checked at a parts store. They said that it showed the truck was skipping intermittently and that the 02 sensor was gone. I figured with 120K on the truck I'd change all 3 sensors and end that problem. I had the light reset and it still drives like an underpowered piece of shit. The motor has only 12,000 miles on it. I replaced it last year with a brand new complete engine. if you are driving on flat ground it runs fine. As soon as you try to pull a hill it has no balls whatsoever and may misfire. In 2nd gear it will wind out to 3800 rpm's tops. The fuel pump is fine and tested fine. I also replaced the spark plugs. I see no loose vacuum lines or anything else wrong with it. The timing is non adjustable and it does advance when revved up. The motor will redline in nuetral with no problem. Any suggestions before I take it to a dealer (ouch) The engine light is back on again now.