Question about 1994 Mercury Grand Marquis

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I have a 1994 mercury grand marq I was checking the brake light sensor when I removed it I had to turn the boster shaft and when I put it back together the car will not come out of park on or off what do I need to do

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I am guessing you did something to the shifter lock...

Posted on Nov 09, 2014


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Sounds like you put too much oil in your vehicle- The engine is under pressure and when the oil is filled past full it makes it hard for the crank to turn because the engine has nowhere to displace the pressure being the oil is over filled. You should never use a warning light to determine weather or not you need more oil or any other fluid for that matter- Warning lights rely on sensors and if a sensor faults or fails it can give false signals (like yours did) thats why you should always use your engines dip stick to determine if you have proper fluid levels!- Drain your oil and try again. If your lucky you didn't bend a rod- if you did bend a rod your going to need repairs or a new engine (depending on your choice of direction in repair)

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Cut off

I suggest you to check your brake boster if there is air leak, to do this, start the engine, press the brake and hold. Observe the engine idle while you are holding down, if the engine become running roughly or engine cut off, it means you have to replace brake boster. but if this procedure doesn't make sense, try to knock the fuse housingseveral times while the engine is running if the engine.if cut off while knocking, most probable there is loos fuse or relay. secure all the fuse and try to knock again, if the problem still excesting, try to wigle in deferent direction the wire loom around the engine bay especially the wire harness of crank shaft and cam shaft sensors while the engine is running. if stil can't find the problem check the ignition switch harness try to wigle as while. if the problem occure while wigling the wire harness definitely you have loose connection.

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