Skip the auto shop - Our mechanics make house calls

Q: My truck overheated - is it a bad water pump or something else?

asked by on

Stop @ light, go to drive feel back tires stutter, driving and coolant reserve cap blew off and over pressurized, truck over heated. Parked it. Got new cap and coolant, drove 2 miles and over heated again. Got towed home. Got new stat and coolant reserve. Overheated again. When I was sealing coolant system had ac on hot and high, was blowing coolish air not hot. Is it my water pump that's bad or a head gasket? Maybe a cracked cylinder? No water in the oil. Had oil change like 2k miles prior oil really dark but not milky

My car has 60000 miles.
My car has an automatic transmission.

The [water pump]https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-water-pump) should definitely be evaluated. If you start the car cold, once engine temperature gauge reads in the normal range, check to see if radiator is hot. If radiator is cool and you have a new thermostat and thermostat was installed right, that means the hot coolant is not circulating to radiator and you can suspect pump is no good (or belt driving pump is loose) or system is blocked. Be sure to promptly turn the truck off as overheating will warp engine parts. Look also for obvious causes like a collapsed radiator hose (bottom hose typically) and yes, the coolant should be tested for presence of exhaust by-products but only after water pump is checked. YourMechanic can both diagnose and repair your cooling system problem during a mobile visit. Just let us know if and how we can assist you.

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!
  1. Home
  2. Questions
  3. My truck overheated - is it a bad water pump or something else?

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: Car shakes and turns off

Hello. There are many factors that can cause a car to stall upon start up. You could be experiencing a fuel supply problem or a fault with a sensor in the engine management system. The first step with any drivability...

Q: Cruise control does not work. The light comes on the steering wheel but it does not work.

Hi there. From description you have provided, your vehicle cruise control does not work, the light on the steering wheel does come on, could be still be the cruise control switch is at fault. The circuit that turns on the...

Q: Service battery system light? Battery died. CD player has stopped ejecting.

Hi, thanks for writing in. The battery only supplies power to accessories when the engine is not running. As the engine starts, the alternator takes over. So, if the CD player was not working while the engine was running, the...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...