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Grand Marquis

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Question
Starter
Hi There, It sounds like you may have two possible issues. When the car dies as you put it into gear, this suggests you have a problem with what is called a MAP sensor. The Manifold Absolute Pressure (MAP) sensor...
Question
Serpentine belt snapped, replaced it and jumped the car it semi worked but then didnt. I changed my alternator but wont start
If you have what seems like a dead battery and when you try and jump start the vehicle and it still will not crank good enough to start the motor then you will need to have a voltage drop test...
Question
Water leaking in trunk fills a pool of water inside.
Hello. There are few things that could cause a water leak in the trunk on your particular vehicle. Which are, faults such as the trunk not fully closing due to a faulty trunk latch or the more common problem of...
Question
Vibration at 35 mph
Hi there. This is very odd, as typically when a mechanical component is damaged, the vibration or rattle will progressively increase as you accelerate. In most cases, a tire / wheel out of balance will cause this type of vibration,...
Question
How do I know if I need upper or lower control arm bushings for the front? 1999 Mercury Grand Marquis
Hi - worn, damaged or "soft" control arm bushings will usually make themselves known as "loose" steering, requires more frequent or constant "corrections" from the steering wheel, abnormal tire wear, or the inability to get the front suspension aligned properly....
Question
Hesitation
There are several possible causes for an engine misfire. Although the most common causes are a faulty spark plug or ignition coil, it is possible that there is a failing fuel injector, or internal engine damage, such as a bent...
Question
Check engine light is on. The gas cap is okay and the vent sensor by crankcase seems okay too. What could it be?
The issue could be the evaporative emission vent purge valve on the vapor charcoal canister. I recommend using a sniffer that is used for butane and check for a fuel leak around the vent purge valve and see if there...
Question
Fuel line pressure relief.
The fuel pressure can be relieved by disconnecting the fuel relay or inertia switch and letting engine run until it dies. Then try to crank the engine several times to make sure it is no able to start. Then you...
Question
Car will not move
You need to look under the drivers side of the dash to see if the shifter linkage in the steering column is moving the shift cable. The bolts that hold the bracket to the bottom of the shifter shaft come...
Question
I accidentally put oil in my coolant tank, what can I do? 1998 Mercury Marquis
Hello - not ideal, but certainly not fatal. You may even be able to remove the coolant reservoir, and drain the coolant/oil mix before any has gotten into the engine. Even if oil is in the coolant, a coolant drain,...
Question
what is the aluminum block with pipes to the brake filler just above the air suspension compressor and do I have to remove it to r
Hello. We will be happy to assist you. It should not be necessary to remove the aluminum canister completely. You may have to move it to the side for clearance purposes but it should be able to stay attached to...
Question
Tranmission 1996 Mercury Grand Marquis
Hello - your symptoms suggest a failure of the forward drum/clutch pack, not an unexpected problem with your extended mileage. Check fluid level and condition (pink and doesn't smell burned is what you look for). I recommend a transmission inspection...
Question
My speedometer drops past 70 when I may be going only 35 mph 1989 Mercury Grand Marquis
Hi - this behavior sounds like a failed speedometer instrument (the portion in the dash cluster rather than the cable from the transmission). It will be necessary to remove the speedometer "gauge", and either have it repaired at a speedometer...
Question
I need a oil pan in gasket but the shop tell me they gotta move the transmission to
Hello. Removing the transmission is a route that some people would take one replacing an oil pan gasket on your particular vehicle. Replacing the oil pan gasket involves hoisting the engine up in order to separate it from the frame...
Question
Blown spark plug
Hello, Unfortunately, this can happen for many reasons such as over tightening or under tightening the spark plug, overheating, cross threaded spark plug hole threads and sometimes just poor cylinder head design. There are special kits (Heli-coil kits) that can...
Question
The car idles rough when in drive with the brake applied.
Hi there. It is quite possible that during the head gasket replacement, a fuel injector or ignition system component may have been improperly installed. It is also highly probable that the mechanic installed the old spark plugs instead of new...
Question
No power to the fuel pump just replaced it.what's the problem? 2009 Mercury Grand Marquis
Hi there - if you don't hear the fuel pump running - ever - check fuses first as you mention, the be sure you have power coming out of the fuel pump relay. I suspect the fuel pump relay is...
Question
Reversed battery terminals
Reverse polarity, at the battery, in a 12 volt electrical system on a car can cause a variety of effects including damaging the alternator. As an initial step in diagnosing the battery warning light you can request that a certified...
Question
How to test rear brake caliber
Try applying the parking brake and see if the caliper piston moves. If the caliper piston moves, then there is a blockage inside the calipers where the lines connect. If the caliper pistons do not move, then the caliper pistons...
Question
can i get pitman arm and idler arm fixed?
Hi there. The Pitman Arm & Idler Arm are essentially the same component; however, they operate on opposite sides of the vehicle. The idler arm operates on the passenger side, while the pitman arm connects the steering box to the...

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