MERCURY P CODES (POWERTRAIN) P0400 - P0499

The Vehicles "service Engine Light" Came On Aprox. 4 Months Prior To The First Visit. I Took Vehicle Through 1st Time And Received A Failed...

It Started As Codes P0305, P0307. Misfires On Cylinders 5 And 7. I Purchased New Coil Packs For The Two Cylinders And New Plugs For All 8...

1996 Mercury Cougar 4.6 V8 110000 Miles. What Problem Might I Have After P0401 Code Came Up?

I Have A 1999 Mercury Sable Ls Vehicle. It Has 145,000 Kilometers. I Service It Regularly And It Is Not Due For A Tuneup, But Today The...

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...

Car Seems To Idle A Little Rough. Wont Pass Smog. Im Not Sure If Its Just The Egr Valve Not Opening All The Way? Please Help. Thank You.

I Have A Mercury Sable 1996 (6 Cylinders 3.0l Efi) With Diagnostic Trouble Code Of P0430 Catalyst System Efficiency Below Threshold (bank...

1996 Mercury Sable 200,000 Ohv 3.0 U The Car Randomly Jerks And I Got Codes P0340, P0131, P0401, P0402, P1130, P1131. P0401 = Egr Flow...

The Check Engine Light Is On, My Scanner Shows A Code Of P0430 Which Indicates A Possible Bad Catalytic Converter Or A Bad O2 Sensor. Don't...