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1996 Mercury Marquis CODE P0308

Tiny
BIGFLAVV
  • MEMBER
  • 1996 MERCURY MARQUIS
  • 4.6L
  • V8
  • RWD
  • AUTOMATIC
  • 188,000 MILES
CODE P0308 IS SHOWING. I CHANGED THE SPARK PLUGS, WIRES, PVC VALVE, VALVE COVER GASKET, IGNITION COIL. WHEN I ACCELERATE THE CAR SHUTTERS OR MISFIRES AND IT MAKES A WHISTLE NOISE WHEN I STEP ON THE GAS. AND IT WASTES GAS. COULD YOU PLEASE HELP ME.
Friday, January 24th, 2014 AT 8:38 PM

2 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
ARE YOU A-GETTIN' THAT SULFUR SMELL?

BETTER HAVE THE CATALYTIC CONVERTER CHECKED FOR BEING PARTIALLY OR STOPPED UP. THIS TOO WILL MAKE IT SET A P0308 CODE

FROM THE SOUND OF YOUR SYMPTOMS, I'D BET ON THAT BEING THE PROBLEM!

KEEP US POSTED ON PROGRESS!

THE MEDIC
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Saturday, January 25th, 2014 AT 8:34 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a pro diagnose this as the 308 coe is a misfire and it can be an injector/fulepressure, maf sensors. He can scan it an duse a mode 6 to find the problem to correct it.
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Saturday, January 25th, 2014 AT 9:44 AM

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