1998 Mercury Sable misfire or stuttering when accelerating

1998 MERCURY SABLE
15,400 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
NTSOCARFRNDLY
  • MEMBER
  • 1 POST
the last 2 months I,ve had an on and off again problem with the car stuttering or bucking when accelerating... then it runs good after driving for a while... we replaced the plug wires which were original ( plugs were already replaced ) the car seemed to run alright again for a couple of days ... then started in again on and off every couple days. Seems like its getting choked out somehow. airflow or gas flow problems? the service light came on a couple of those times but it doesn't stay on so it can be tested! please reply with suggestions!!!! thank you!!! very much appreciated!!!
Sep 2, 2010 at 5:20 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Lack of acceleration,chugging,hesitating,bogging,misfiring etc. could be caused by one of the following below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it.
Sep 3, 2010 at 10:43 AM