Skip the auto shop - Our mechanics make house calls

Q: Water pump / still over heating

asked by on

I recently replaced my water pump but my gauge still says it's over heating but there's not one bit of smoke coming from it and it still holds water and anti freeze and leaks a little. When I brake hard it goes straight to the red zone, I pull over and turn off the car for 10 minutes and when I turn it on, its in the middle of the gauge then when I take off, it starts over heating in about 5 minutes.

My car has 250000 miles.
My car has an automatic transmission.

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot. I would suggest having an expert from YourMechanic come to your home to diagnose your cooling system.

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
  1. Home
  2. Questions
  3. Water pump / still over heating

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: Engine power reduced

Hi there. Sometimes when you drive through standing water some electrical problems will occur. If you have a warning light that comes on shortly after, it's possible that the sensor that triggered this code may have done so because of...

Q: Firebird runs for about 20 minutes then starts goosing and stalls. when slowing down and turning it stalls. Installed a new module, a new fuel pump, and a new filter.

Hi there. If your engine has a carburetor, check the float and see if its sticking. The float will not move properly and cause the engine to over fuel and flood the engine which will stall it out. I recommend...

Q: My car makes a grinding noise when i put it in gear and wont accelerate

The problem sounds like you may have broke an axle CV joint or the problem is in the transmission? I suggest having a mechanic like one from YourMechanic come to you and check to see which one is failing. ...

Related articles

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...
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...