Overheating

Asked by Joemen124 May 23, 2019 at 03:50 PM

Question type: Maintenance & Repair

I just changed my thermostat and water pump.
because my truck was overheating. It was bubbling
out of the overflow.  It ran good for one day, now
the problem is back. I took the thermostat out and
it still runs hot. Is there any kind of sensor that
could be causing this?

1 Answer

89,725

all I can do is provide an overview of overheating that might help. Overheating can be caused by several things. A broken water pump, a sticking thermostat, clogged radiator, collapsed hose, bad radiator cap, air in cooling system. could be a defect in the cooling fan system causing the fan not to operate when needed. There could even be mechanical issues with the engine that cause this. Start by checking coolant flow. Is the top hose hot? if not it's the thermostat. If it is, with radiator cap off see if there is flow. If not, it's the radiator. If flow, purge air from the system (videos on line explain this simple procedure). This covers 90% of overheating problems.

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