My mother had the oil changed in her 1992 Mercury Marquis, only 62,000 miles and the mechanic says we need to fix the crank pulley wobble? I have never heard of this, can you tell me what he is talking about for $172.00? Thanks Jimmy

Everything is driven by the crankshaft pulley at the bottom and is by far the hardest to turn, but it is the driving pulley.

The alternator should turn easily.

The steering pump should turn easily.

The water pump should turn easily.

The AC Compressor is harder.

The Idler and Tensioner should spin freely.

All pulleys should have no discernable lateral movement that would cause wobble. All the pulley should be in alignment with each other. The tensioner should not be TOO tight.

https://www.fixya.com/cars/t10666005-diagram_2000_mercury_grand_marquis

https://www.google.com/search?q=2000+mercury+grand+marquis+serpentine+belt+diagram

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Move the Grand Marquis's serpentine belt tensioner off the serpentine belt with the serpentine belt tool. Pull the belt of the remaining pulleys by hand. Take the belt out of the engine well. Wrap the new belt around the bottom portion of the crankshaft pulley. Follow the belt routing diagram to route the belt over each remaining pulley until only the tensioner remains. Move the Grand Marquis's serpentine belt tensioner aside once more and slip the belt onto the tensioner pulley.Hold the belt in place with one hand while you move the tensioner slowly back into position with the other. Here you can fine the quality AC parts http://www.1airconditioning.com/ac_compresor.htm

I WOULD SAY NO ONLY BECAUSE IT MAY INDICATE LOW OIL PRESSURE LIKE INTERNAL OIL PUMP THAT MAY HAVE GONE BAD,OR IT COULD BE A FAULTY SENDING UNIT, WHICH IS A CHEAP FIX.BUT EITHER WAY ITS BETTER TO BE SAFE THEN SORRY. 3K FOR A NEW MOTOR INSTALLED.

Did you ask why the crank pulley needs replaced?

That unit is a solid piece of steel and I can't imagine what could go wrong with it unless it was damaged when it was removed when the timing belt was changed.

I have a 1997 Rodeo with 163,000 miles. It still is running but is showing its age. My son owned a 1995 model and went over 200,000 on it. Both vehicles suffered from excessive rust in the undercarriage.

If you are paying a mechanic to fix that vehicle, I'd propose that it is more expensive to keep running than it is worth.

Again, ask why he wants to replace the crank pulley. If the vehicle runs OK as it is, and his answer is not coherent, skip this repair and drive it for the life it has left with minimal repairs only.

might be the oil filter adapter (the stud that the filter threads onto). I would try replacing filter first twist on till tight then use filter wrench to tighten 1/4 to 1/2 turn more

if driven in town or stop and go or hot weather then every 3,000 miles, if driven moroe hiwat in a mild climate then every 5,000 miles is what i recommend.

piston rings are worn. do an oil change and substitute 1 qt of oil with 1 qt of lucas oil treatment. when the engine heats up the oil thins and gets past the rings and combusts along with the fuel. the fix i recommended will only reduce the sympyoms and confirm the rings are worn. you'll need a ring job to fix.

hi it could be both but its also worth checking wheel balance also engine mounting rubbers hope this helps please rate this answer

STARTER IS ON SIDE OF ENGINE, NEAR OIL PAN

Try this diagram.