1995 Mercury Station Wagon Missing at high RPM

Tiny
WILDMAN3756
  • MEMBER
  • 1995 MERCURY SABLE STATION WAGON
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 161,500 MILES
The car starts fine, idles OK, but upon heavy acceleration it starts missing and stumbling. Did plugs, cap, rotor, wires, clean injectors, air filter, with very little difference. Exhaust does not seem clogged, on the acceleration you can feel the exhaust increasing and then the missing, so it does not appear to be a clogged or restricted exhaust
Saturday, March 13th, 2010 AT 10:17 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some testing results we start here

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position 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
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Saturday, March 13th, 2010 AT 1:07 PM

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