2009 Kia Rondo Replaced Brand New Thermostat Engine Running Cooler Than Normal

2009 KIA RONDO
105,000 MILES
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UCHARAN
  • MEMBER
  • 2 POSTS
I replaced brand new thermostat but the engine is running cooler than normal, its not heating as usual
Jan 20, 2013 at 7:00 PM
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CJ MEDEVAC
  • Experienced Mechanic
  • 11,004 POSTS
ARE YOU SURE THE THERMOSTAT WAS THE CORRECT TEMPERATURE RATING?

AS FAR AS "not heating as usual"

THE ENGINE?

.........OR INSIDE THE VEHICLE (COCKPIT ENVIRONMENT)???

FEEL THE HEATER HOSES WHERE THEY ENTER THE FIREWALL..........WHEN THE RIG IS AT OPERATING TEMPERATURE

IF YOU WRAP YOUR HAND AROUND THEM---IS THE HEAT ALMOST UNBEARABLE (TOO HOT TO HOLD)?---ARE THEY WARM?---COLD?

YOUR TURN

THE MEDIC
Jan 20, 2013 at 8:49 PM
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UCHARAN
  • MEMBER
  • 2 POSTS
The fan fuse was blown off. So I replaced the fan and the resister. The check engine light is off. However, when I drive the temperature does not hold it comes down to below quater mark..what else could be the problem
'
Jan 24, 2013 at 8:57 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
It sounds like the thermostat is stuck open. If it is closing and restricting the flow of coolant like it is designed to, the engine would heat up for you.
Jan 26, 2013 at 8:11 PM
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