Overheating

Asked by Jun 25, 2016 at 05:14 PM about the 1999 Dodge Ram 1500 2 Dr Laramie SLT 4WD Extended Cab SB

Question type: General

I bought a Dodge Ram 1500  year1999. When I
bought it it had no fan in front of  motor electric
fan in front of radiator  I don't believe works  ac not
working at all . But my question is while I sit with
trk running it will heat up to around 220-230 but
wile driving it's 180-190  plz help  I want to return
to original  kinda worried about cost  but I'm
keeping it.

3 Answers

6,355

That's what the fan is supposed to do, it needs to turn fan to cool it down when idling. The reason temperature drops when ur driving, it's because cool air blowing through radiator, taking place of ur cooling fan. U need to install original fan back on

I was told it could slso be water pump or thermostat. Could that be correct also?

6,355

Well here is how the cooling system wirks. The engine runs, thermostat is closed, this forces the engine to start heating up because thermostat has not reached set temperature. Once engine or thermistat temperature has reached operating or thermostat preset temperature, thermostat opens and water begins to cool down. This proccess is being done over and over. There's an engine temperature sensor that monitors engine temperature, when engine temperature gets to a certain point such as 220* the fans turn on to cool engine down to whatever thermostat setpoint is. So if the temperature exceeds 220 and fans don't kick in, it's not that pump is not pumping. It's water getting too hot and fans are not coming on to cool it down. To answer ur question, no. Fans should kick in

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