P CODES (POWERTRAIN) P0300 - P0399 Questions

Cold Morning, Went Out To Start Car. Turned Over A While But Finally Cranked, But Runs Very Rocky. Changed Spark Plugs (old Ones Very Fouled...

I Been Getting The Po300, 301, And 303 Codes And Wanted To Try And Fix The Problem This Weekend, What Would You Suggest I Check First??

When Having A Computer Check Done We Get A Code P0300. The Service Engine Soon Light Came On And The Car Started To Run Rough. Please...

P0300 Code Comes Up

This Code, Along With A P0300 Code Came Up When Auto Zone Put It On Their Machine. I Don't Know What The 0298 Is And They Couldn't Tell Me...

I Am In The Process Of Diagnosing A Po300/po302-i Can't Find The Ideal Fuel Trim #'s. Could You Please Give Me The Ideal Range For Both...

I Have A P0300 Reading Which Says Random Or Multiple Misfire Detected. What Should I Do? Replace The Engine Or Refer It First To An Isuzu...

P0300 Random Misfire

While Pulling A Light Trailer, My 2001 Odyssey (156k Miles) Started Running A Little Rough, Check Engine Light Started Flashing. Engine...

Engine Performance Problem 2001 Chevy Astro 6 Cyl All Wheel Drive Automatic 200.00 Miles 2001 Chevy Astro Awd Shows Misfire #3 And #6...