2004 grand marquis gos to cold while at idle

Asked by rus1234 Jan 17, 2021 at 01:15 PM about the 2004 Mercury Grand Marquis GS Convenience

Question type: Maintenance & Repair

my marquis temp gauge drops to cold when at idle but shows normal while
driving but drops back to cold when stopped at idle thanks in advance for any
help

1 Answer
157,825

James answered 3 years ago

If you had work done involving the cooling system I bet it wasn't refilled correctly. On these vehicles the cooling system must be refilled through the thermostat housing when they're drained for service or repair and if they're allowed to run extremely low on coolant. Hope that helps! Jim

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