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    8buck's Avatar
    8buck Posts: 2, Reputation: 1
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    #1

    Nov 5, 2006, 02:47 PM
    dodge 3500 overheating
    I have a 98 ram 3500 4x4 v.10 and it started to overheat when my heater quit blowing hot air, it still blows cold a/c but no heat. I have flushed my radiator twice replaced all hoses twice replaced thermo's twice and fan clutch once and no luck. Could the trans be making it over heat I noticed along time ago I was pulling a boat down to the KEYS (I live in florida) that while I was pulling the a/c would cut in and out. Could my trans be going bad in wich case it is making my motor overheat
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Nov 5, 2006, 04:46 PM
    Several thoughts:
    1. Only use 50/50 mixture of antifreeze and distilled water. Positively no tap water, well water, or softened water. You may need to replace the radiator and/or heater core, due to mineral buildup. Feel radiator surfaces, when the engine is hot, and see if it gives you any clues.
    2. Install an auxiliary transmission cooler--a must on any vehicle used for towing.
    3. Use full-synthetic ATF (such as Amsoil Universal Synthetic ATF)--transmissions run 50 degrees Fahrenheit cooler, shift better, get better gas mileage, and last longer. Change ATF and filter at recommended intervals.
    ROSE17's Avatar
    ROSE17 Posts: 2, Reputation: 1
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    #3

    Jan 19, 2007, 04:03 PM
    I have the same problem with my 2000 dodge 1500 4x4. Before mine overheats the heater starts blowing cold air. I haven't replaced anything yet, what should I start with?
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