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1999 Mercury Sable SURGING

Tiny
NYANDJIM
  • MEMBER
  • 1999 MERCURY SABLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 103,000 MILES
When accelerating modestly, the engine often seems to falter momentarily, and then surges for a second, and then settles back to normal acceleration.

Did the 100k tune up at 98,000k and this problem is unchanged.

Is this the computer?
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Thursday, September 2nd, 2010 AT 8:07 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi nyandjim, Welcome to 2carpros and TY for the donation

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.
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Thursday, September 2nd, 2010 AT 8:55 AM

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