1999 Ford Ranger THUMPING NOIES DURRING COLD SEASON WHEN HE

1999 FORD RANGER
120,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JOHN LANGFORD
  • MEMBER
  • 1 POST
DURING THE COOLER MONTHS WHEN THE HEATER IS IN USE I GET A THUMPIMG NOIES IN THE COOLING SYSTEM I CAN PUT MY HAND ON THE RADIATOR HOSE AN IT WILL BE THOBBING WHILE ITS MAKEING NOIES IF I TURN OFF THE HEATER THE NOISE WILL NOT HAPPEN I HAD A MECHANIC CHECK FOR HEAD GASKET LEAK HE SAID CHECK OUT OK CAN YOU HELP
Feb 11, 2008 at 4:10 PM
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98RANGERXLT
  • ✓ASE Certified Mechanic
  • 301 POSTS
  • ASE Certified Mechanic
Your blend door is stuck and trying to open.
Feb 11, 2008 at 7:31 PM
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