Q: Q: Hesitation

asked by on

Hey jamahl i have a 04 grand marquis question for you is would you happen to know why at a red light stopped the marquis hesitates/ rumbles and will go slowly up to speed and like jump almost when it gains full power and then it is fine it does not do it all the time but does it frequently also i have had all spark plugs changed as well as the ignition coils.check engine is on and the code thats read is ignition coil number two and ihave switched that coil again incase its defective coil but it still comes back on with computer reset..hope you can help thanks in advanced

My car has 165500 miles.
My car has an automatic transmission.

The first thing to try is to disconnect the mass air sensor and drive it to see if the hesitation is still there. If hesitation is gone then replace the mass air sensor and drive to see if hesitation has improved. Clear the check engine lights and drive to verify problem is gone.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Q: Hesitation

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Rear suspension

Hello. You cannot use these springs on your car. You may need to talk to the company that sells the mobility lift to see if they have a solution for you since it is very common to have these lifts...

Q: Truck jerks trying to change gear around 45mph

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

Q: i have no power to windows locks wiper or gauges after trying to install cd player wires did touch

You have two fuse boxes. There is one located under the left side of the dash and one in the engine compartment. Check fuse #17 in the engine compartment fuse box by the radiator. Then check fuse box on the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.