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paduv9 11-12-2012 12:02 PM

Overheating at times
My 2002 Ram 1500, 4x4, Quad, 5.9, (90k miles) overheats when I put any type of substantial load on it, like a trailer or a boat. However, otherwise, when the weather is cool (below 75 degrees) it does fine as a daily driver. Here are some related issues:

  • I lose about a gallon of antifreeze every two weeks or so, but I can't find any leaks, but I can often smell antifreeze.....and this is when the engine is running at normal temperatures.
  • I can't find any anti freeze mixed with the engine oil.
  • Thermostat is new and water pump and radiator seem to be operating normally.
Can anyone tell my what the problem might be? I was thinking I might have warped one of my heads, but again, I am not seeing a anti freeze mixed with the oil.


Maddevill 11-12-2012 02:59 PM

You are probably burning the anti-freeze. I'd say either a blown head gasket or a cracked head. I don't know if the infamous plenum gasket would cause this. Gentlemen?

RamTech 11-12-2012 03:21 PM

Start with the simple stuff before you go tearing into the engine. have the cooling system and cap pressure tested. This will reveal any leaks and/or a bad cap. I've seem caps that look to be in good condition allow a coolant loss similar to the one you describe.

Gen1dak 11-12-2012 10:32 PM

You're not towing with overdrive on, are you? Ditto on radiator cap. Hopefully not a cracked head, but it's on the list.

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