20 Most Recent 1999 Mercury Mystique - Page 4 Questions & Answers

funny that you mention ' Dark Matter ' -- there is a possibility that you might have water contamination in the tank (?), you can try and get some gas additives that remove water from the fuel. also, there is the possibility that fuel pick up line has been damaged and is not getting fuel from as low in the tank as it use to.

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Sounds like your coolant reservoir is cracked, which will keep your cooling system from pressurizing. The hot contents will basically just steam right out. I suggest replacing that then filling up your cooling system or doing a flush.

sounds like you arnt tightening everything properly as when timing is set it shouldnt move

The ignition control module on your car is located right on top of the engine. Follow your spark plug wires up to where they all plug in to a small black box often referred to as the ignition coil. Thats it. The ignition control module is integrated into the coil on this car. Hope this helped.

Ok, so what are the trouble codes ?

if ia dead , replace, see how test the diode. Normally the diode are prevent parasit currente or for protection by overload.God bless you

buy a manual

I would first check the idle control motor.

A LOT depends on if your Mystique is equipped with the 2.0L DOHC 4-cylinder engine or the available 2.5L DOHC V-6 engine for that year. This is need-to know information when you are asking for help with your car.

Idle control motor. Had same problem. It was like a humming sound rpms would drop

It's in the fuse panel inside the vehicle to the left of the steering wheel. The fuse you want to check will be the fuse in the number 21 position and should be a 40 amp fuse. Below is a diagram of the fuse layout and I marked the fuse for you. This should be in your owners manual if you have one. If you do not have one and would like a copy, feel free to email me at [email protected] with your make, model and year of your vehicle and I will be happy to email you a copy. No there won't be a cost to you for it. Hope this helps....

i go by how much play it has. if it moves to the side more than 3/4 of an inch u should get it tightened or replaced

It is on the thermostat housing on a 2.0 and on the cross over tube on a 2.4