Skip the auto shop - Our mechanics make house calls

Q: truck overheating

asked by on

truck overheats during extended drives or putting more than normal strain on the engine ie pulling a boat or going up big hills. truck will not overheat while sitting still or normal driving. as soon as i slow down or turn on heater temp goes back down to normal. i have flushed and changed coolant and changed the thermostat.

My car has 104000 miles.
My car has an automatic transmission.

A: Hi there. The problem you’re describing ten...

Hi there. The problem you’re describing tends to occur when one of two issues exist. First, overheating while towing can occur when air bubbles are trapped in the coolant lines. A second issue could be the coolant temperature sensor that is damaged or the electrical connector attached is faulty. Sometimes you will have to prime the radiator in order to avoid air bubbles.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Rough idle and RPM fluctuation

Hi There, As you may know, the Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses this information to adjust...

Q: I have to manually open the throttle plate to start my truck. What causes the throttle plate to stay closed?

This suggests you may have a bad throttle control actuator. This is a module near the intake that operates the opening and closing of the throttle plate. This works in conjunction with the throttle position sensor which monitors your gas...

Q: Belt pulley loose and shaking

Hi. The bolts securing the pulley should be inspected for damage because they shouldn't be coming loose. The bolts should be tightened if they are not damaged and make sure that components attached to the pulley are not damaged. Vibrations...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.