Question about 2002 Toyota ECHO

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Oil in the radiator overflow reservoir

What could be the cause of oil in the radiator overflow reservoir? I just bought a 2002 Toyota Echo and after driving it about 350 miles noticed the coolant low temp. light was staying on longer than it seemed like it should. Checking the coolant level I found oil in the overflow reservoir. It seems to be almost pure oil, no anti-freeze. Will take it to a mechanic tomorrow but would like to know what to expect.

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Either a leaky head gasket or someone put oil in the overflow, it happens, clean it out drain the coolant from the entire system and refill with new long life antifreeze, also add a can of good radiator sealer.

Posted on Mar 12, 2009

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Posted on Jan 02, 2017

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I have a 2002 Toyota Echo and I hear what sounds like liquid moving from one place to another when I turn the steering whell all the way to the right.


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2002 ford taurus. Radiator overflows but, temp gauge not hot.


It could be both your thermostat and water pump, it could also be an air lock in your cooling system. One way or another, I think pressure is building up in part of the system because its not circulating properly.

When its cool, take the top off your reservoir, give the bottom hose to your radiator a good few squeezes, see if the water goes down a little, if it does, you moved something on and probably cured it.

If not, run the engine up, to get it warm and bleed off any air in the system. (Assuming there are bleed taps in the system)

If that also does nothing, I reckon its your water pump. And if your changing that, I'd suggest changing the thermostat at the same time.

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One thing to check is for coolant getting into the oil, which would indicate head gasket failure. Check oil dipstick and/or underneath of oil cap for a frothy brown/tan look to it. If so, do not drive the car.

Also check coolant reservoir for a leak. Evaporation is suspect, but maybe not to the point you are describing. Check coolant reservoir cap, as well as radiator cap.

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Replace a coolant reservior on a 1999 ford taurus


If you need Illistration I Can Email it to you Im at
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Removal

CAUTION: Do not mix Standard (green) Coolant with Extended Life Coolant (orange). If mixing occurs, drain engine cooling system and refill with originally equipped coolant type. If this contamination occurs, the service change interval on Extended Life Coolant will be reduced from 6 years/150,000 miles to 3 years/30,000 miles.

  1. Drain radiator until engine coolant is out of degas bottle. Disconnect radiator overflow hose and engine coolant vent hose at degas bottle.
  2. Remove power steering oil reservoir retaining screws and position power steering oil reservoir out of the way.
  3. Remove degas bottle return hose and clamp. Remove degas bottle retainers and remove degas bottle.
Installation
  1. Position degas bottle in vehicle and install retaining screw and nut. Tighten retaining bolt and nut to 9-12 Nm (80-106 inch lbs.)
  2. Connect degas bottle hose and clamp to degas bottle.
  3. Position power steering oil reservoir onto degas bottle and install retaining screws securely.
  4. Connect radiator overflow hose and engine coolant vent hose to degas bottle.

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yes, not having an overflow reservoir for your radiator will cause you to lose water. As your engine warms up the water expands and creates pressure in the cooling system. When the pressure reaches a certain point(usually about 15 psi.) the radiator releives the pressure by releasing water into the overflow tank. When the engine cools back down the water shrinks pulling water back into the radiator from the overflow. If there is no overflow, the everytime the engine warms up on a drive water will be lost and not recovered on cooldown.

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I also recently bought a 2002. According to the owner's manual the blue light does not indicate a problem unless it stays on after the car warms up. If you have an automatic it will not shift into fourth gear until the coolant warms up at which time the light should go off. Have only had the car for a week and notice the blue light goes off after a mile or two of driving in temperatures in the teens to 30's. I don't know how much outside temp affects it.

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