Question about 2002 Mercury Grand Marquis

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Everytime I step on the gas pedal, the car shudders. It feels as if its coming from the engine. Its not bad, but concerning, and thanks.

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Sounds like the engine is missfireing, it should be tuned-up.

Posted on Dec 30, 2010

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1 Answer

Transmission shudder on 1997 Mercury Gran Marquis

When you get a shutter- drag the brake pedal lightly-
that will turn off the torque converter clutch if the solenoid
is working

The rpm should go up with any brake pedal application-
if the converter is releasing

If you determine the torque converter clutch is bad & the
shutter,then the trans has to come out

Check engine & trans mounts also for wear

Jan 17, 2013 | Mercury Grand Marquis Cars & Trucks

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Engine shudder and squealing from engine

take belt back of and check each pulley for a bad bearings

Dec 02, 2012 | 2005 Toyota Corolla

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I own a 2002 Dodge Dakota 4x4 truck. As I am stepping on the gas pedal, the truck starts to slow down and makes a rough sound as though something is not receiving gas. The best way to describe the sound...

I would try 3 things
1. when was the fuel filter replaced last? I would replace it if you don't know when and you may have ran into some bad gas. Replace it.
2. Same with the air filter.
3. Add fuel injector cleaner.
Hope this helps.

Dec 23, 2010 | Dodge Dakota Cars & Trucks

1 Answer

Lights are blinking from dash everytime i step on the gas, light the battery light, engine light, etc

Most likely you have a alternator problem. The battery light only comes on normally when there is a charging system problem.

I recommend having the alternator checked.

If you have any more questions on this, please feel free to ask. Thanks Jay!

Oct 28, 2010 | 1994 Nissan Maxima

1 Answer

Service engine soon light came on right after the car died out!

I really doubt the fuel is the issue. It could be a clogged fuel filter or weap fuel pump or any number of other reasons. Since you just bought the car you should get it diagnosed before you end up stranded.

Mar 13, 2010 | 1994 Cadillac DeVille

1 Answer

My 2002 mazda tribute gets a severe shudder. moisture intrusion?

The shudder comes from ignition malfunctions. Replace the spark plugs and plug wires.
Check coolant level for the white smoke concern.

Feb 24, 2010 | 2002 Mazda Tribute

2 Answers

1993 Chavrolet Cavalier it shakes badly in parking mode

Yes I have repaired both of these concerns on hundreds on 4 cyl. GM models most of the time the bad engine mount is the one on the passenger side of the car.And it is the TCC solenoid that gets stuck on.

Dec 25, 2009 | 1993 Chevrolet Cavalier

1 Answer

Vehicle shudders at certain speeds and rpms.

Sounds like the torque converter. can be tricky, new one expensive, I had the same problem, talked to a buddy who is ford master mechanic, he told me to DRAIN, the TC, then put new fluid in. He said DRAIN, and NOT flush. because if you flush, and the magnet inside is missing or screwed up, it will push all of the little pieces of metal and **** into transmission. I had the dealership do this, and it cost around 150-200. It worked, and I was lucky, cause they told me it hadad no magnet, but it worked, not shuddered since.
check out posts on

May 23, 2009 | 1995 Ford Bronco

1 Answer


mcdevito75 here, Sounds like something in the ignition system, a bad ignition module or coils, Have your repair shop take a look at these items.

Apr 10, 2009 | 1993 Lincoln Town Car

1 Answer

Won't idle

You possibly have a clogged fuel filter, a vaccum leak would cause your engine to idle high, and the oxygen sensor would set off the check engine light, but it may be worth replacing the oxy sensor given that the car is 16 years old. Try replacing the fuel filter first and see if that helps.

Jan 31, 2009 | 1993 Buick LeSabre

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