Asked by Teresapike1963 Mar 08, 2021 at 11:20 AM about the 2005 Mercury Grand Marquis
Question type: Maintenance & Repair
My dad has a 2005 Mercury Grand Marquis. We
replaced the climate control panel, but it has not
fixed the problem. There is a clicking sound from
behind the panel. The heat will stay on high and
can not be turned off
Trippmeister answered 3 years ago
Sounds like an actuator under the dash, for the hot water, or the blend door. Common problem. usually requires removing the dash, big job. You could put a shutoff valve in the hot water line, but then you'd have no heat at all. Sometimes one can reach through with the glove box removed, buy a lottery ticket while you're at it.
Trippmeister answered 3 years ago
May have to remove the dash, to fix the blend door actuator. Sometimes by removing glove box. Good luck. Big job. Common problem.
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