Q: 2008 chevy Malibu 3.6 v6 over heating after water pump replacement

asked by on March 04, 2017

Water pump was replaced a little over a month ago and now my car is over heating when at idle goes back down to normal when at speed

My car has 112000 miles.
My car has an automatic transmission.

Overheating will warp the cylinder head and/or engine block causing costly damage so be sure to get this resolved right away. Indeed, it is best not to drive the car if you know the engine is operating outside the normal temperature range. The most common causes of overheating include low coolant level, a faulty thermostat, a plugged radiator, a faulty radiator pressure cap, collapsed hoses, non functioning cooling fans, and a faulty water pump or drive belt. In your particular circumstance, I would look first at the engine cooling fans as you are indicating that the overheating is occurring at idle (presumably when you are stopped) when those cooling fans are most critical for radiator cooling. At speed, there is airflow and thus the fans are less critical. Certain engine faults, such as a leaking head gasket or poor engine running condition can also cause overheating. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine overheating diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Coolant leaking and overheating, car also shut off on me.. could it be my water pump?

The coolant leak could be coming from the water pump weep hole (indicates that the seal is bad), a coolant hose that is split or loose on the clamps, a split radiator, or the radiator could be plugged up causing...

Noise when braking at low speed

Hello. I am not sure of your description of the sound, but I think you are describing a brake rotor runout causing the brake pads to gyrate and make a noise at low speeds and light braking it is most...

Problem with filling tank. Code says bad evap canister/valve and/or gas cap

Hi there. More often than not, the issues filling up the fuel tank is attributed to a bad EVAP vent solenoid. It is the job of the EVAP vent solenoid to allow air into the charcoal canister so that the...

Related articles

A Buyer’s Guide to the 2012 Chevrolet Captiva Sport
The The 2012 Chevrolet Captiva Sport is a brand new vehicle and is an eco-conscious crossover SUV for the environmentally friend consumer. It comes standard with many features, but also has many available options so it can suit any buyer’s...
The Best Used Cars to Buy If You Love Camping
Do Do you love camping, getting back to nature and enjoying life in the great outdoors? If you do, then you know that getting there can be half the fun, and it’s even better if you have a great ride....
2012 Chrysler 200 vs. 2012 Chevrolet Malibu: Which One Should I Buy?
When you are looking for a small-range sedan, you need to get somewhere quickly and inexpensively, and may even need to take a few kids with you. Slightly larger than a commuter car, these mid-size options offer decent gas mileage,...