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4.2 overheat coolant

  1. OEM Issues
    Ok, I have read just about every thread and post about this out there I think... Here is what's going on. I am driving 55-65 mph in open conditions, ambient temp about 85 deg, A/C is on. With no changes in driving the truck will begin to overheat and gauge will travel between 210 and 260 back...
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