The temp hand is fluctuating while driving down.

ANONYMOUS

MEMBER
1995 FORD RANGER
175,000 MILES

The temp hand is fluctuating while driving down the road. Just replaced the radiator a few months ago. Thinking about replacing the thermostat to see if that could be the problem. No smoke or fluid mixing. Water levels are fine. A little dirty though. The mileage counter above the odometer isn't working right. It will register sometimes but will stick. The truck doesn't actually run hot. Could it just be the head unit causing the problem?

1 Reply

CJ MEDEVAC

MECHANIC
11,004 POSTS

THERMOSTAT IS IS A GOOD CHOICE

I DO ALL OF MINE ABOUT EVERY 2 YEARS, AS WELL AS A FULL CHANGE-OUT OF ALL OF MY RADIATOR JUICE .... NEED IT OR NOT

I RECOMMEND, IF IT'S AVAILABLE FOR YOUR TRUCK, A THERMOSTAT, THAT IF IT FAILS, IT ONLY WILL FAIL IN THE "STUCK OPEN POSITION"

IT MAY COST A LITTLE MORE---BUT---"NOT GETTING HOT ENOUGH" WILL NOT DAMAGE YOUR ENGINEWHEREAS ONE STUCK IN THE CLOSED POSITION WILL DEFINITELY OVERHEAT AND IF YOU ARE SMART, SHUT 'ER DOWN TILL IT'S COOLIF YOU "MISS IT" AND CONTINUE TO DRIVE....SEVERE DAMAGE MOST LIKELY WILL OCCUR

GOT A REPAIR MANUAL----THE "SCHEDULED MAINTENANCE SECTION" WILL EXPLAIN IT ALL

https://www.2carpros.com/questions/2007-ford-taurus-tune-up

OLD RADIATOR HOSES----PARTICULARLY ONES WITHOUT A ANTI-COLLAPSE SPRING IN THEM CAN S.UCK FLAT

THE OLE COOLING FAN CLUTCH IS ALSO A POSSIBILITY OF FAILING

KEEP ME POSTED ON PROGRESS

THE MEDIC