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I have a 99 Mercury Mountaineer / Explorer 2x4 with a 5.0. I am getting a loud knock at idle up past 4k RPM. (Don't want to blow the motor and test higher.) It has always had a knock sound at high RPM and under load, but more suttle. It seems to follow the RPM curve. It has 160k miles and have...

Hello, I have a 99 Mercury Mountaineer 4x2 with a 5.0. It is equipped with the automatic climate control. If you have it in full automatic, it turns that A/c on and runs the blower fan at full speed. When it gets close to the set temperature, it is suppose to slow the fan down and maintain...

Hello. I have been searching on the site for an hour and can't get a complete answer. I know with AWD you have to raise the engine to change the oil pan gasket. But what about the 2x4 with the 5.0? I have read that it is easier, but it is not stated how it is easier. Can I just unbolt the...

I have a 1999 Merc Mount 2x4 with 5.0. It is late and hot here in Vegas and the engine bay was almost intolerably hot, so didn't get too far with it. There is a whine / Humming sound coming from the drivers sideish engine bay. I checked the A/C compressor, Power Steering, center Idler, Water...

There is a black box on the top of one of the rear sub-frames. It lives above the fuel tank. It may be a vapor canister. My buddy wanted me to make sure that the nipple did not need a hose on the one end. I told him that it was probably made for a few cars that required it. But, is this...