P CODES (POWERTRAIN) P0300 - P0399 P0303

I Have Been Checking Out This Code And I Have Swapped Out Plugs, Moved Injectors And Coils. Ohmed Out Wiring Under Plenum, Still Get Code...

I Keep Getting This Code And It Erases Easy. This Is What I Have Doe To The Truck I Have Changed The Spark Plugs, Wires, Distributor...

96 Jimmy 4.3 4x4 144k Miles, I Rebuilt The Upper End Both Heads Machined A 1000 Miles Ago, Bought Ebay Used Injector Spider Was Clean And...

Hi, I'm Having Trouble Finding The Source Of Why My Friends Car Keeps Throwing Dtc P0303 And Sometimes P0300 Which I'll Get To...

Trouble Codes Po300 And Po303. What Would Cause This? Can I Get Mr. Ken (admin)?

Engine Performance Problem 1996 Pontiac Bonneville 6 Cyl Two Wheel Drive Automatic I Have A 1996 Bonnie And Its Coming Up With The...

What Do You Recommend On Trouble Shooting Since My Diagnostic Code At Autozone Read Cylinder 3 Misfire. Code# P0303 How Do I Locate...

I Have Had The P0303 Cylinder Three Misfire Code For At Least Six Months. We Repaired The Smaller Things Such As The Fuel Injector And Spark...

The Car Will Run Fine For 10 To 20 Minutes Then The Check Engine Light Comes On & It Starts To Vibrate. Had It Checked For Codes Got: P0300...

Today, My Dad Got A P0303 Code. I Checked The Spark Plug, And Cleaned It, Then Cleared The Code (scanguage Ii). Got The Code Again. ...