Spark Plugs and Wires
Lincoln Town Car
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Have an intermittent misfire on a 1994 Lincoln Town Car more often at cruising speed on the highway in overdrive and have put new plugs and wires on it Any suggestions?


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2008-09-04 02:17:48
2008-09-04 02:17:48

damaged catalytic converter can cause misfires. Indeed it could, but I would also check and/or replace the coil packs as needed.


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One of your coils has gone bad..mine did the same thing and this was the problem

why does the 1991 Lincoln towncars transmission not have overdrive?Instead of going into overdrive it seems to go into neutral.But if you take it out of overdrive and leave it in drive it never goes into neutral while I'm driving.

Overdrive is the normally allowed position so you don't see the light on If you turn OFF the overdrive , the overdrive off light will light up or if there is a problem the overdrive off light will flash

if it is a consel shift, just under the shifter nob.

Overdrive is the normally allowed position . It won't shift into overdrive until the speed is fast enough anyway , but if you are going up and down hills and the transmission keeps downshifting you might as well turn the overdrive feature off until you are out of the hills Just adding to the answer : Also if you are towing something you want to shut off the overdrive

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On my 1994 there is a button in the end of the gear shift arm. This turns off the overdrive and the dash says "Overdrive Off" above the odometer and gas mileage messages. Other than that, I don't know.

Overdrive is the normally allowed position on your 1993 Lincoln Town Car . It is the " fourth gear " of your automatic transmission that allows the engine to run at a lower RPM when you are on the highway / freeway You get better gas mileage and the transmission will run cooler , so it's a good thing

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There is a button on the end of the gearshift lever...pressing it toggles the "O/D disabled" on and off.

That indicates that the Overdrive ( for the transmission ) has been turned OFF using the transmission control switch on your shift lever ( either push the button again to turn the overdrive on or the next time the vehicle is shut off and then restarted , the normally allowed overdrive position will be enabled and the light will go off )

Never heard of anyone doing it. It is possible t relocate the overdrive button, but not bypass it. When tarted the transmission has the overdrive on in default mode you can turn t off with the button but once you shut the car off and turn it back on the overdrive will be on again. On my B&M shifter i drilled a small hole in the side of the plastic base and mounted the button there works like a charm.

The D with a circle will allow the transmission to shift into overdrive which reduces engine RPM"S and will conserve fuel when on a highway cruise.

Sounds like a transmission problem when going into overdrive.

Normally on a 2006 Lincoln LS you would drive in " D5 " That allows the transmission to use all 5 gears If you are in " D4 " the transmission uses the first 4 gears and doesn't use the overdrive

On a 2005 Lincoln LS : D5 is the normal drive position for the best gas mileage . The transmission will operate in gears 1 through 5 D4 ( overdrive cancelled ) the transmission operates in gears 1 through 4

I'm not a mechanic, but you should check your transmission fluid level first, then take it to someone to check the clutch either automatic or manual.

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to my knowledge that is an after market fabrication done by the local speed shop it includes a convertible top directional rims and a economy tuned engine calibration for better gas mileage for cruising

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