Car

Tiny
TWEEZY1325
  • MEMBER
  • 1991 MERCURY MARQUIS
My 91 grand marqui is slow to accell when I press the gas pedal
Saturday, February 12th, 2011 AT 8:20 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light on?

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.
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 and keep testing.
Was this
answer
helpful?
Yes
No
Saturday, March 12th, 2011 AT 12:34 AM

Please login or register to post a reply.

Sponsored links