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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

overheating when at idle

Old 08-16-2010, 03:39 PM
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overheating when at idle

my 88 truck just started getting hot when at idle. just replaced thermostat today and still getting hot???
not smelling any coolant and i checked the oil and it seems fine... ??
Old 08-16-2010, 03:52 PM
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How is the water pump is the thermostat opening and coolant flowing?
Old 08-16-2010, 03:56 PM
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Been through any mud recently? You may have plugged your rad if you did.
Old 08-16-2010, 03:56 PM
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possibly the fan clutch

it is in fact the fan clutch's job to move air through the radiator when at a stop


is it locking up like it suppose to when it starts warming up?
Old 08-16-2010, 04:15 PM
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i agree with bleeder, mine went out a couple weeks ago, the temp would creep up when idling and climbing large hills. i tried 2 used ones and ended up buying one for around $43.oo at autozone. you might blow out the radiator and check the fan belt but it sounds like clutch.
Old 08-16-2010, 04:55 PM
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x3 on the clutch
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