Q: Car overheating, but reservoir full

asked by on January 28, 2016

My car is running hot. The water reservoir is full. Could it be the water pump?

To start, a coolant pressure test should be done to check for any leaks in the cooling system. If there are leaks, the coolant level will be low and there will be air pockets in the system causing frequent overheating. If the thermostat is stuck closed and the coolant can’t recalculate, then car can overheat. The water pump can be damaged or defective causing the same issues. A cooling system inspection should be carried out by a qualified technician like those at YourMechanic to diagnose the overheating issue. Also, have them install the correct temperature thermostat with a coolant flush to ensure the right distilled water to coolant ratio, usually being 50/50.

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

Where is my turn signal relay and hazzard fuse and or relay located on 2001 2wd ford explorer sport trac

Hi there. The hazard relay is located in the dash behind the radio. You will have to pull out the radio or reach up under the dash to locate the relay. The location for the turn signal relay would be...

replaced battery and alternator, car at a red light bucked, all the dash lights came on and it died.

Check for stored OBD-II trouble codes. Your issue is not likely to be related to the alternator/charging circuit. If engine speed went up uncommanded, that points more toward a malfunctioning engine sensor or engine controls. As far as the PCM...

Whining noise coming from engine.

Hi There, I think you are on the right track in thinking of things like the alternator or the water pump as those are two things that immediately will correspond to RPM change when accelerating. If it is the alternator,...

Related articles

A Buyer’s Guide to the 2012 Ford Focus
The The 2012 Ford Focus brings a lot to the world of compact cars. Available as either a four-door sedan or a five-door hatchback, the Focus has great fuel efficiency and European styling that sets it apart from other cars...
The Best Used Cars to Buy If You’re an Interior Designer
As As an interior designer, you need to transport a great many different items, including fabric, paint and wallpaper samples and sometimes even furniture items. You probably don’t handle overly large loads very often, and when you have to, you’ll...
The Best Used Cars to Buy If You're a Personal Trainer
As As a personal trainer, you either operate out of a gym, or you go to your clients. Either way, you probably don’t have to haul any more gear than what fits into your gym bag, so your main focus...