Question about 1992 Mercury Grand Marquis

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Overdrive transmission transmission trys to changes gears when going at 30 mph. and it feels like it is jumping. in overdrive at 65 going up a hill it trys to change gears feel like its jumping. from one gears to other but can't.

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  • odyssey12000 Jul 12, 2008

    transmission trys to changes gears when going at 30 mph. and it feels like it is jumping. in overdrive at 65 going up a hill it trys to change gears feel like its jumping. from one gears to other but can't.

  • odyssey12000 Jul 12, 2008

    will transmission make it on a 1000 mile trip

  • Mrdonte Aug 07, 2008

    Transmission has a rough shift at 30-40mph. Had transmission rebuilt and it happened again within a week.Took it back and they "repaired" it again but within a week same problem. Does anyone know anything about a grand marquis.

  • wrmfuzzie Oct 05, 2008

    my 1992 Grand Marquis struggles to change gears at 30mph. You can push it to go faster, but the RPM's really get up there. It used to hesitate at 45mph and then it would engage the right gear and be fine, but now you can bearly drive it. It goes slower and slower and then tries to overheat.

  • Anonymous Mar 15, 2014

    1990 bonneville in overdrive going down hill with foot off gas pedal feels like its slipping or jerking any ideas?

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  • Mercury Master
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You have an issue with the torque converter clutch, your symptoms indicate this is the issue, possible TCC solenoid problem or the torque converter itself has a shorted magnetic clutch.

Posted on Sep 04, 2008

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2 Answers

When driving down the road should the transmission be in drive or overdrive?


Overdrive.

Unless you're towing something, or maybe if you're going up a hill and the transmission is 'hunting' for the proper gear. You could temporarily pop it out of OD until you get to the top of the hill.

Overdrive will allow the motor to spin more slowly, thus burning less gas.

May 04, 2016 | Cars & Trucks

2 Answers

I have a 2002 Mazda MPV. When do I turn on/ off overdrive to my transmission


By default, your automatic transmission has a torque converter that is the main focus to your car\truck changing gears. I had one break on me in a Nissan Sentra and was glad I was close to where I was going because I would have otherwise been stranded.

If you live in a mountainous area and do a lot of traveling going up and down hills, your best bet, as long as you are above 58 mph(like going thru Denver on Interstate 70 and going west thru the Rockies, then it is okay to leave the overdrive on. I would, however, recommend that going up an incline of more than 30* then you may want to turn it off until you have reached a sustainable speed. If you are towing more than 800 lbs on a trailer on an incline of more than 20* then you would want to turn the overdrive off as the torque converter putting your vehicle into overdrive with a heavy load can cause the converter to snap within the transmission and you would be dead in the water.

If you live in a more plain-like state then the only time you really NEED to turn off the overdrive is if you are hauling a large amount of cargo any real distance or rarely get over 4300 rpm due to such short traveling distances. Overdrive function is primarily used to cut down on the amount of fuel needed in order to take long journey on Interstate or State highways that allow for speeds faster than 55 mph.
Hope this helps.

Apr 24, 2015 | 2002 Mazda MPV

1 Answer

Transmission shifts hard


You don't give me much information to work with. However, 1st, look at the engine mounts. You may have a broken mount. This will make it feel like the transmission is shifting hard. Other than that, there is only a few things that will cause this. The speed sensor tells the computer when to shift the shift solenoids. It may not be "seeing" a quality signal. If this is the case, the speedometer will be bouncing too. Last idea is that it is skipping a gear. Starts in 1st, should go to 2nd at about 10 MPH. 3rd at 25 to 30 MPH. And, if you have a Overdrive transmission, it should go into overdrive at around 45 to 55 MPH. If it is skipping 2nd, it will engage 3rd at a high engine speed, and will feel like a sudden slam into gear. If this is true, your transmission needs some work. Hope this all helps. Good Luck.

Jun 19, 2014 | 2002 Pontiac Sunfire

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Ford explorer makes a thunk at crusing speeds


check all the mount bolt to your transmission.

Feb 20, 2013 | 1999 Ford Explorer

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Just had my 475 transmission rebuilt. Only ***** at 20 mph and 35mph. Shouldn't there be a third gear change at 45mph?


I assume it has overdrive, so yes it should go into lock-up at 40 then overdrive around 45 or 50 mph.

Jul 02, 2012 | Cars & Trucks

1 Answer

1990 f150 transmission up shift to early


Sounds like the passing gear cable is out of adjustment. Get a shop manual and see what the specs are on how to adjust it properly. It is a pretty simple fix.

May 27, 2009 | 1990 Ford F150

1 Answer

Shifts in and out of overdrive


This sound like you are feeling the transmissions torque converter going in and out of lock up. When the torque converter goes into lock up it feels like a shift . One way to tell if it is the converter you are feeling is to push the od button disabling overdrive and see if it still does it. The converter will still go into lock up .

Mar 23, 2009 | 2000 Dodge Durango

1 Answer

Truck jerks hard in overdrive


its just time for a tune up
what your getting at low RPMs is just a misfire. i would bet to say that you engine light is also on.
so plugs and clean your throttle body and if you haven yet replace your fuel filter.
later paul

Nov 26, 2008 | 2001 Ford F150 Styleside SuperCrew

1 Answer

1996 Corolla Auto Transmission problem


Hi. 2005 Corolla CE. It's normal. They tend to do this when upshifting form 1st to 2nd gear. No timing chain readjustment needed.

96 Corolla. Overdrive not working properly, if not engaging after 45mph constantly. If driving on the city, is normal, but not after 45mph, when the car is trying to engage overdrive in order to save gas and preserve the trans gears. If not able to get help at the dealership, find another one and explain them the situation.

Aug 01, 2008 | 2005 Toyota Corolla

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