Cooling problems

Tiny
RAZORRAY
  • MEMBER
  • FORD RANGER
My friend has a 2002 Ranger with approximately 73,000
miles. It is the entry level model, no bells or whistles.
Has a 2.3 liter, 5-speed tranny, 2-wheel drive.
Question is: it has developed an overflow problem
at the radiator fill tank. After noticing the coolant level
being extremely low, I filled it back to the correct
level and drove the truck to my place for an oil change
and minor service. Upon arriving I noticed coolant
leaking onto the ground and upon further inspection,
saw a small crack in the fill tank. Also the coolant was
bubbling from the small hose that feeds into the flow
hose leading to the engine.
I checked the temp gauge, and was indicating the temp
was normal.
Could this be the early signs of a thermostat failure, or
worse water pump?
I am a real hands on guy, x-military mechanic, worked
at a garage for a while, and have always serviced
and repaired all my own toys, with the technology
on todays vehicles, without the proper tools and
equipment it gets more difficult to know what the
problems are, so any advice would be appreciated.
Thanks for your time.
Ray!
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Friday, November 16th, 2007 AT 11:40 AM

4 Replies

Tiny
TES4444
  • MEMBER
With the coolant escaping the radiator but the temp seeming to be fine, the first thing I'd try replacing would be the radiator cap. If the spring has become weakened over time that would cause the fluid to escape the radiator even though the engine was not overheating.
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Friday, November 16th, 2007 AT 12:25 PM
Tiny
RAZORRAY
  • MEMBER
Hey Tes,
Thanks for your response. Cap seems to be fine.
Just wondering if it's a precursor to a bigger problem?
I'm going to replace the fill tank first, and ask the dealer
what the problem might be, and go from there.
Thanks again!
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Friday, November 16th, 2007 AT 1:57 PM
Tiny
98RANGERXLT
  • MEMBER
I would try replacing the thermostat and coolant temp sensor and see what that does
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Friday, November 16th, 2007 AT 7:43 PM
Tiny
KORNDSOILGRODOPE
  • MEMBER
So you say the coolant was bubbling well short for boiling so if the fill or overflow tank what ever is cracked idono if that is the prob but still need replaced. To start with when coolant bubbles/boils that means the cooling system has an air leak, the system when hot is pressured to keep the coolant from boiling and the only way it can boil is when their is no pressur or no antifreez antifreeze highers the boiling point of water and lowers the freezing point which in your case its prob got a leak and isnt pressuring up the cooling system wich causes the coolant to boil which expands and overflows
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Tuesday, November 20th, 2007 AT 12:13 AM

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