Question about 1996 Ford Taurus

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Low coolant light always on

Would you need to change the thermostat if the light for low coolant comes on all the time and engine is running hot but not over heating ?

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Marvin

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  • Ford Master
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Low coolant means just that, find out if the system is really low or the light is receiving a false signal from the low coolant sensor, just check the level in the coolant recovery tank and the make sure the radiator tank is full, if you are low on coolant then check out why, a leak is probable, most likely a water pump or hose related issue, and no a bad thermostat will not in itself turn on the low coolant light unless the engine boils over and the system becomes low. Remember never ever open a radiator cap on a hot engine, you would be surprised how many professional mechanics get burned this way, be careful..

Posted on Aug 17, 2008

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Ronnie Houston

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SOURCE: engine running hot after thermostat installed

you have a bad water pump the water isnt circulationg as it should so you need to replace the water pump and soon before it causes damage

Posted on Jan 22, 2009

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OVERHEATING


This could be a multitude of things:

Stuck closed thermostat.

Cooling fan not coming on.

Clogged radiator.

Low on coolant.

Water pump failing/leaking.

Head gasket blown, leaking exhaust into antifreeze.

Clogged catalytic converter.

Thermostat: If the Van heats up, then feel the upper radiator hose. If it's cold, then your thermostat is closed. Replace thermostat.

Coolant: If low, simply fill with distilled water and coolant. Low levels will let engine over heat.

Radiator: If there are cold-to-the-touch spots on the radiator after it should be warmed up, then a clogged is probably occuring. Have radiator flushed.

Head Gasket: If you smell exhaust fumes in your coolant reservois tank, then you got a blown head gasket.

Cat Converter: Only can be tested if off the car. Or you could try a non-contact thermometer. These are also good to testing cold spot on radiator or if thermostats are open.

Cooling fan: If mechanical it'll be spinning. If electrical, it should come on automatically with the A/C, or when it gets hot.

Water pump: Will be leaking from the front if it needs replaced. On a van, it's a tough job.

Good luck!

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This is serious, as it sounds like your engine coolant is not circulating and you may already have a damaged head gasket. It's probably not a bad thermostat, because that wouldn't kill the heater. Here are some things to check, ranked from least to most serious:

1. Check for low coolant level and add if needed. Check for leaks.

2. Check for kinked radiator hoses.

3. Check for airlock. Remove bleed screw from thermostat housing. Crank engine. When no air or bubbles come out with the coolant, put the bleed screw back in. Be sure and clean up any spilled coolant so your pets can't drink it.

4. Check for bad water pump and/or deteriorated belt.

5. Check for bad head gasket, possibly damaged by overheating.

I hope this helps!

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