P CODES (POWERTRAIN) P0400 - P0499 P0442 Questions

When The Vehicle Is Idling, It Seems As If It Is Going To Stall Out. It Has Not Yet, But Has Come Close. I Have Checked The Gas Cap To...

These Codes Have Come Up On Car. The Car Will Not Shift Properly While Driving. What Do These Codes Mean And How Do I Fix The Problem?

Would You Know What This Is That Is Not Working Or Needs Replaced?

I Have Changed The Gas Cap In My Car But My Engine Light Is Still On..its A 99 Mercury Cougar. Could It Be Bad Gas From What I Filled The...

Computer Problem 2000 Chevy Silverado V8 Two Wheel Drive Automatic 200k Miles Evap Control System Small Leak Code. Replaced Fuel Cap...

I Have 1999 Cutlass Oldsmobile A 3.1 Engine, My Question My Check Engine Light Is On And Is Showing A Code Of P0442 How Do You Find And Fix...

P0442 Evaporative Emission Control System Leak Detected (small Leak), Changed The Fuel Cap Out. Still Getting The Ses Light? What Do You...

Rough Idle/idle Stall. Stalls When Parked. Coolant Is Low. Coolant Was Flushed And Replaced Less Than A Week Ago And It's...

2003 Jeep Liberty What Do The Following Codes Mean? P0455 & P0442

A Code Came Out Po442.small Leak In E-vap Where Do I Start Looking Can You Help Me Please.thank You!