03 trailblazer p0300 code low on power runs rough
I have an 03 trail blazer with 150,000 miles that is running rough and low on power. It was running fine until my wife brought it home after filling with gas. I read the codes and initially had p0302 and p0300. after eraseing the codes and running further I checked the codes and only pulled a p0300 code. when unit is in park you can put the accelerator to the floor and it will stop climbing at 3,000 rpms. while driving it runs rough but if you push the accelerator to the floor it will down shift and turn much higher rpms. I have installed new plugs in the last several months. Ing coil PK ? EGR valve? timing Sensor ? Fuel injector? fuel filter? fuel Pump? other sensor? Were should I start the trouble shooting process is there a common failure with these units. Thanks
Check fuel pressure, check for restricted exhaust and complete the tune up. Installing a new fuel filter might not be a bad idea if you can't remember the last time you did it. Good luck and keep us posted.