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Anonymous
Anonymous Posted on Dec 07, 2009
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Changed expansion tank but light still on any ideas 03 ford escape low coolant level light on dash stays lightup

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gerry bissi

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  • Ford Master 4,390 Answers
  • Posted on Dec 07, 2009
gerry bissi
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Joined: Jan 07, 2009
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Bad low coolant switch or still low on coolant.

Engine Cooling The cooling system components are the:

  • engine coolant temperature sensor (ECT sensor) (12A648)
  • radiator (8005)
  • degas bottle (8A080)
  • radiator draincock (8115)
  • water pump (8501)
  • water temperature indicator sender unit (10884)
  • water thermostat (8575)
  • dual speed fan motor assembly
The water pump circulates the coolant.
The water thermostat:
  • controls the engine coolant temperature.
  • allows quicker engine warm-up.
The degas bottle:
  • provides a location for fill.
  • contains coolant expansion and system pressurization.
  • provides air separation during operation.
  • replenishes the engine coolant to the system.
The fan motor (8C607):
  • operates only when the ignition switch is in the RUN position.
  • will not operate with the switch in the OFF position.
The engine coolant flows:
  • from the lower radiator hose (8286) to the water pump.
  • from the water pump to the engine block and the cylinder heads.
A closed water thermostat returns the engine coolant to the water pump; an open water thermostat allows the engine coolant to flow to the radiator.
Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.
When adding engine coolant, use a 50/50 mixture of clean, drinkable water and engine coolant.
To maintain the integrity of the coolant and the cooling system:

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Related Questions:

0helpful
1answer

Coolant light staying on after changing expansion tank
did you reconnect the coolant level sensor that goes underneath the expansion tank ? it is fragile so possibly it broken - cheap to replace.
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Apr 02, 2014 • 2007 BMW 3 Series 328i
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2000 vw beetle 2.0 L, low level coolant light...engine mil code 1256
not the pump but air in the system or a broken wire to the coolant level sensor
that sensor at the top of the radiator tank has to be completely immersed in coolant or the circuit is broken and the light comes on
same effect id the wire to that sensor is broken in the insulation
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Jun 16, 2017 • Cars & Trucks
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Vw jetta iv, temperature alarm sounds and flash with no aparent reason. temperature dial indiator is ok.
I WOULD CHECK BOTH RADIATOR HOSES TO MAKE SURE THEY ARE HOT. THERMOSTAT COULD BE STICKING SLIGHTLY CLOSED.CHECK COOLANT LEVEL MAKE SURE COOLANT NOT LOW.IF COOLING NOT BOILING OUT OF THE EXPANSION TANK. I WOULD HAVE CAR HOOKED UP TO A DIAGNOTIC SCANNER AND CHECK COOLANT TEMPERATURE SEE IF TEMP. OVER 230 DEGREES IF SO RADIATOR COOLING FANS NOT WORKING.COOLANT THERMO SWITCH BAD BOTH FANS SHOULD BE RUNNING AT LOW SPEED.IF ALL LOOKS GOOD YOU COULD HAVE FAULTY LOW COOLANT SENSOR IN EXPANSION TANK.MAKE SURE COOLANT IS IN THE EXPANSION TANK BECAUSE COOLANT LEVEL COULD BE LOW.ADD COOLANT IN THE EXPANSION TANK UNTIL YOU AT MAX LEVEL LINE ON THE EXPANSION TANK.DONT OVER FILL THE EXPANSION KEEP ADDING COOLANT UNTIL COOLANT LEVEL STAYS AT THE MAX LEVEL LINE ON THE EXPANSION TANK.
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Jun 27, 2011 • 2003 Volkswagen Jetta TDI
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Coolant is full with correct solution mixture but coolant light comes on and off randomly
sound like you have faulty low coolant level sensor in the coolant expansion tank.make sure coolant expansion tank has coolant should be on full hot mark when engine hot been driven.cold engine coolant level in expansion tank should be on full cold mark.
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Apr 15, 2011 • Saturn Ion Cars & Trucks
4helpful
2answers

How do I change the coolant
Hi!!
On the bottom of the radiator, there is a drain valve, just open it and drain fluid into a container, if you want faster drain, remove bottom radiator hose.
NOTE: DO NOT OPEN SYSTEM WHEN HOT, COOLANT IS POISONOUS FOR PETS, KEEP IT AWAY FROM THEM.
Good Luck!! Rate this post!!
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Aug 14, 2010 • 1996 Chevrolet Lumina Mini
0helpful
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I changed our my rediator and now the sensor light saying radiator coolant is low and the buzzer won't stop going off. The radiator coolant level is fine and my temp gauge is fine. Any help would be...
Do you have an overflow tank that has low level in it?
LEVEL CHECK The coolant level should be checked regularly. Serious engine damage can occur if the engine overheats. CAUTION
Check the coolant level when the engine is cold; serious injury could result from escaping steam or hot fluid if checked when hot. If your car is equipped with an electric cooling fan, make sure that the ignition switch is OFF. The cooling fan will automatically operate if the ignition switch is on and the engine coolant temperature is high, or if the wiring connector on the thermostat housing is disconnected.
  1. Depress the button on the thermal expansion tank (coolant recovery reservoir) safety cap, if there is one. Allow all of the pressure trapped in the system to escape. CAUTION
    The radiator is not factory-equipped with a safety cap. Do not remove the radiator cap before removing the expansion tank cap, or when the engine is hot. Fig. 1: Remove insects and debris from the radiator fins 85811096.gif

  2. Remove the expansion tank cap. The expansion tank should be 1⁄3 full, unless Full and Low marks are provided. The level should be well above the bottom of the tank when the engine is cold.
  3. If it is not, carefully remove the cap from the radiator. The radiator should be full.
  4. Add a 50/50 solution of ethylene glycol (or other suitable coolant) and clean water. If there was no coolant in the expansion tank, fill the radiator until the level is near the inlet port and install the radiator cap. Then, fill the expansion tank to the specified level, and secure the expansion tank cap. When checking the coolant level, the pressure cap should be examined for signs of age or deterioration. Check it for a worn or cracked gasket. If the cap doesn't seal properly, fluid will be lost and the engine will overheat. A worn cap should be replaced with a new one. The fan belt and other drive belts should be inspected and adjusted to the proper tension. (Please refer to the belt inspection and adjusting procedures, earlier in this section.) Remove the radiator cap and run the tip of your finger around the inside of the filler neck. Check for excessive deposits of rust or scale around the filler neck lip and the filler port. Make sure the coolant is free of oil. Replace the coolant as necessary. Hose clamps should be tightened, and soft or cracked hoses replaced. Damp spots, or accumulations of rust or dye near hoses, the water pump or other areas indicate possible leakage, which must be corrected before filling the system with fresh coolant. Periodically clean any debris, leaves, paper, insects, etc. from the radiator fins. Pick the large pieces off by hand. The smaller pieces can be washed away with water pressure from a hose. Carefully straighten any bent radiator fins with a pair of needle nose pliers. Be careful as the fins are very soft. Don't wiggle the fins back and forth too much. Straighten them once and try not to move them again.
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Jul 05, 2010 • 1985 Mazda RX-7
0helpful
2answers

I have a 99 Ford Taurus, the low coolant light keeps coming on and I can smell hot coolant. I had the radiator flushed last month - didn't help. I had the system pressure tested yesterday - they found no...
is the coolant level low when it comes on, due you have to keep adding coolant to the surge tank, have you repalced the surge tank cap?
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Jan 27, 2010 • 1999 Ford Taurus
1helpful
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My 2007 ford escape's coolant warning light stay on . The radiator has been flushed and there is no overheating.
two types of coolant warning one is temperature other is low level....the sensor is located in the resavore tank.. look at bottom and follow wires to the sensor.. common problem
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Sep 04, 2009 • 2007 Ford Escape Hybrid FWD
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The low coolant warning light comes on regularly on my 2001 Ford Escape XLT, I have checked the obvious, that being coolant level and it is OK, engine not running hot, is coolant level sender easy to...
it is a float inside the coolant recovery/overflow tank which is easy to replace
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Jun 25, 2009 • 2001 Ford Escape
0helpful
1answer

Low coolant light staying on
if the coolant is full you need to check and most likly change the low level sensor in the coolant tank.
Read full answer
Jun 11, 2009 • 2000 Ford Taurus
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