1995 Mercury Grand Marquis Questions

Unanswered 1995 Mercury Grand Marquis Questions

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p0402 code all tests of dpfe and selenoid are good only vacuum valve does not significantly effect idle when vacuum is applied
On the climate control the blue button on the control for some reason will not change from hot to cold. All I get is hot air and I get hot air coming out of all vents too. Can YOu help?
i was hooking up a stereo system in my 1995 grand marquis and all my exterier lights stopped working now i cant drive my car at all. what happened and how do i fix it?
My air conditioner quits working intermittently while I am driving. It will be cooling normally and then suddenly stop cooling even though the fan is still blowing air into the cabin. Turning the system off for a mi...