2007 Mountaineer overheats

JONESLD1

MEMBER
2007 MERCURY MOUNTAINEER
6 CYL
AWD
AUTOMATIC
72,000 MILES

I have a 2007 Mercury Mountaineer that overheats on occasion. I have changed the Thermostat, and flushed the coolant system. It is using almost all of the coolant in the reserve in about a month, but I have not seen any signs of a leak while parked, no unusual smells from the exhaust nor any misfires in the engine that would point towards the head gaskets. But when I have the A/C on, it tends to get hot. Also 40% of the time, there is a louder roar from the engine/engine fan and loss of power when accelerating, making me point towards the intake or Fan Clutch. Any suggestions on what to look towards for an answer?

2 Replies

CJ MEDEVAC

MECHANIC
11,005 POSTS

I KNOW LITTLE ABOUT YOUR VEHICLE

I'M MORE AT HOME WITH OLD JEEPS AND OLD FORDS

DO YOU HAVE A CHECK ENGINE LIGHT ON? IF SO A POPULAR AUTO PARTS STORE MAY POSSIBLY RETRIEVE YOU CODES FOR FREE. THIS WOULD BE WHERE TO BEGIN LOOKING FOR THE PROBLEM!

AS FAR AS LOSS OF POWER/ ROAR? SORTA SOUNDS LIKE A SLIPPING TRANNY.1ST THING, THAT POPPED INTO MY HEAD!

I CHECKED YOU SITUATION A BIT DEEPER"FAN CLUTCH" WISE

YOU DO NOT HAVE A "FAN CLUTCH". YOU HAVE AN ELECTRIC FAN

IS IT RUNNING, WHEN THE VEHICLE SEEMS TO BE OVERHEATING. EVER GET OUT AND PUT YOUR EYES ON IT?

IF IT'S NOT RUNNING, MIGHT HAVE A RELAY, TEMP SWITCH, BAD MOTOR, LOOSE CONNECTION OR SOME OTHER ISSUE PREVENTING IT FROM COMING ON

MANY TIMES, A "VETERAN" PARTS STORE GUY, CAN MAKE GOOD CALLS, AS TO WHAT MAY BE WRONG. HE HAS THE "HANDS AND EYES ON", ABILITY WE DO NOT HAVE HERE!

HOPE THIS HELPED A LITTLE BIT

THE MEDIC