Been having an issue with my 2001 Blazer. When I press down on the accelerator slowly leaving the stop light, it gives me a bogging down/jumping feeling in the engine. When I am cruising at about 60-65 it also feels like it is bogging. I get a engine light saying "multi-cylinder misfire". I have changed the plugs, wires, cat, and the fuel pump. I changed the fuel pump about 18 months ago. Was wondering if anyone else has had this issue, and if so, give me some feedback. It will be much appreciated.

 

Use the 'search' feature for P0(zero)300 or P030x and you should get plenty of threads concerning this code.

 

Sounds like a MFI conversion is on its way.......