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Ford Crown Victoria/Mercury Grand Marquis Transmission/Suspension

99 messages,  Last post on Oct 08, 2012 at 11:50 AM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum.

What is this discussion about? Ford Crown Victoria, Mercury Grand Marquis, Suspension, Transmission, Sedan

Messages Page 1 of 10

#2 of 99 '96 C/V engine & tranny problems by gdj277

Jan 25, 2006 (12:50 pm)

Hi everyone. Hope someone can help me out. My son was driving the Crown Vic one night this summer & suddenly the engine started to rev way up but the car was slowing down. Now you have to rev the engine way up before it will start to move. It seems to shift ok once it is going. I haven't had the time or money to look at it so it has just been sitting. Then one day I decided to move it in order to mow the grass under it. When I started it up, the engine started to make a terrible knocking sound, run ruff, smoke & developed a fast drip of oil from the rear r/h side of the engine. The oil level is still ok & have good oil pressure. I'm afraid that it may cost more than it is worth to fix it. Any ideas? Thanks!!

#3 of 99 Re: '96 C/V engine & tranny problems [gdj277] by jsylvester

Jan 25, 2006 (7:12 pm)

Replying to: gdj277 (Jan 25, 2006 12:50 pm)
Ah yes - sounds like the tranny went, and then the engine was over-revved by someone trying to get the pressure in the transmission high enough to move the car, trashing it as well.
 
I'd guess the tranny or torque converter is a goner, and the engine could be as well. I'd be tempted to take your lumps and find another used CV.

#4 of 99 vibration in gear by mystique

Mar 01, 2006 (4:57 pm)

hello all, just purchased an 03' grand marquis with 35k on it. The car is absolutely flawless and rides like it came right off the showroom floor. But there is a slight vibration when i am at a stop in gear. In park it is not a problem. Anybody had this problem, the reason i wanted a marquis or vic was because of the powertrain smoothness and quiet.

#5 of 99 Re: vibration in gear [mystique] by euphonium

Mar 02, 2006 (9:50 am)

Replying to: mystique (Mar 01, 2006 4:57 pm)
Has the transmission fluid been changed since the car was new? If not, try & see if that helps, remembering to also drain the torque converter fluid as well.

#6 of 99 Re: vibration in gear [mystique] by jsylvester

Mar 02, 2006 (6:25 pm)

Replying to: mystique (Mar 01, 2006 4:57 pm)
It might be as simple as the fact the 4.6 liter engine went to Mustang influenced performance improved heads in 2002. While the engine puts out 34 more horsepower, it is not as smooth at idle.
 
I know my old 1994 Grand Marquis was quieter and smoother than my 2002. The 2002 performs much better, but I still miss the old girl.

#7 of 99 Re: vibration in gear [mystique] by zanzibarjose

Mar 24, 2006 (12:59 pm)

Replying to: mystique (Mar 01, 2006 4:57 pm)
maybe a broken motor mount? or loose bolt on a motor mount. check it out and see, dont forget the mount on the trans also.

#8 of 99 vibration/snow driving by mystique

Mar 04, 2006 (1:22 pm)

I will have the transmission fluid checked thanks. Also many friends in the law enforcement field tell me these cars are like sleds in the snow. I have a ford club wagon as a work van and, although it is much heavier, it is fine for me in the snow. I tell my friends you need to know how to drive in the snow and you should be fine. What should I be looking for? Coincidentally my Uncle is a big volvo person, and all his volvos have been rear drive. He says the same thing, that all you need to do is know how to drive and you'll be fine.

#9 of 99 2005 Grand Marquis (Vibration) by wlppete

Mar 05, 2006 (6:54 am)

My last car was a 1995 Grand Marquis....I sold it with 250,000 miles on it and it still drove and rode great.
I recently purchased a 2005 Grand Marquis (would'nt have bought anything else)
 
I drive a lot of miles....since my purchase I have noticed that I have a vibration in the floor both driver and can feel the same in the passenger seat. Mostly at 60-70 mph but can also be felt at lower speeds. For what it is worth....I don't feel the car is as quiet as my 95.
 
Has anyone else experienced the same? So far the dealership has replaced the drive shaft (indicating they thought it was out of spec) Foreced balanced the tires..(found no real problem)
 
I have driven another 2005 from there lot and feel some of the same but not near as severe. There indications are that they do not know what to look for next.
 
Anybody have any help..experiences....or suggestions.
 
Thanks

#10 of 99 Re: 2005 Grand Marquis (Vibration) [wlppete] by g45

Mar 05, 2006 (5:28 pm)

Replying to: wlppete (Mar 05, 2006 6:54 am)
A challenging dilemma given the car is so new. I agree on the tires. I'd have gone after them straightaway, dynamic balancing all four.
 
Be sure the rear transmission mount is secure and tight.
 
Also be certain your exhaust system, from the manifold all the way back, is 100% tight, secure, and right. Be certain ALL muffler clamps are fully tightened.
 
You are describing what perhaps might be a harmonic vibration. Can you get it to happen just by revving the engine, or must the car be in motion?
 
Try driving the car in a lower gear and see if the more severe vibration happens at a lower speed. The objective is to see if the problem is connected purely to vehicle velocity, or connected instead to engine RPMs.
 
Report results/outcomes, if any, to your tech/service person.
 
Good luck!

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