Question about 2004 Dodge Ram

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1999 dodge b2500 van is overheating.

The head gasket is not blown and I just replaced the thermostat.

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  • Ned C Cook
    Ned C Cook May 11, 2010

    when does it overheat? Low speed, idle? ctuising sped flat ground? If it overheats at low speed, does picking up speed bring it down?



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I know this solution sounds kinda dumb but if you just replaced the thermostat I would check to make sure the thermostat is installed the correct way. I replaced the entire cooling system on one of my vehicles once and it still overheated....I put the thermostat in backwards. Turned it around and problem solved. Hope this helps and please don't forget to rate me.

Posted on May 24, 2009


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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!

Feb 10, 2009 | 1995 Ford Econoline

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