Skip the auto shop - Our mechanics make house calls

Q: The engine will not warm up to normal operating temperature. I've replaced the thermostat twice, replaced the waterpump and bled

asked by on

You could drive this grand caravan a hundred miles and it will not get up to normal operating temp. Replaced thermostat twice, replaced the waterpump and bled the air out of the cooling system. If you let it idle in the driveway it gets up to 1/8 normal operating temp. As soon as you start to drive it cools off very quickly to the point where it barely registers on the temp gauge. The cabin heat temp is way below normal too. The coolant hoses never get as warm as they should. I can hold onto them after driving the vehicle because they are not very hot at all.

My car has 68000 miles.
My car has an automatic transmission.

The cooling system will not get up to operating temperature if the thermostat is not seated correctly, radiator cap not holding enough pressure or the cooling fans are on all the time wen the key is on. If you already replaced the thermostat then you should check to make sure the fans are not on all the time when the engine is running even when a/c system is turned off. If fans stay on the the relay may be stuck on or the coolant fan switch is shorted. Have a mechanic like one from YourMechanic check fan control system and check the radiator cap to make sure it is holding specified pressures.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • The engine will not warm up to normal operating temperature. I've replaced the thermostat twice, replaced the waterpump and bled

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Cars cranking but not firing

This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the...

Q: Sunroof broken.

Sometimes the seal around the sunroof sticks and if you give it a little push thats all it needs to overcome that binding, other times the switch or motor has failed but the fuse should always be checked first. Have...

Q: My truck has the trouble code P0700, what does it mean?

If you have downloaded Diagnostic Trouble Code P0700, that means a fault has been detected in one or more of the following transmission components: the transmission control module, the transmission valve body, the shift solenoid(s), and/or the wiring harness that...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...