I HAVE A 1999 MERCURY GRAND MARQUIS IT IS BLOWING AC BUT WHEN I SPEED UP IT BROG DOWN AND BARELY BLOW IS IT ONE OF MY VACCUM
I NEED TO FIND OUT WHERE ARE MY AC VACCUM LOCATED AT AND
COULD I LOOK AT A DIOGRAM OF IT 1999 MERCURY GRAND MARQUIS
here's something...'bout half the picture...did you need a picture?
If it is a vacuum problem it will divert to defrost. Is that what it is doing?
A cracked vacuum canister will cause this. Looks like a black softball w two vacuum hoses going to it
Looking for a Used Grand Marquis in your area?
CarGurus has 1,786 nationwide Grand Marquis listings starting at $2,250.
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts