Skip the auto shop - Our mechanics make house calls

Q: My car is overheating - 2000 Toyota Celica

asked by on

new water pump, new thermostat, c02 test came up clean. no water in oil. overheats when idle and full of water. Overheats after a few mins of driving. It spikes from operating temp to H instead of gradually getting hotter. Have tried to bleed the air out a few times and still over heating.

My car has 265000 miles.
My car has a manual transmission.

This may be caused by a faulty coolant fan relay. 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, it 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. I would suggest having an expert mechanic, such as one from YourMechanic, come to your location to determine why the car is overheating and suggest the necessary repairs.

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: engine and electrical wont turn off

Hello. Thanks for writing in. Typically the ignition cylinder system is supposed to break the connection to the charging system so it will stop producing energy. If the system never gets the message to stop, or the charging system has...

Q: fuse gets no power

The interior fuse box in the center console has the dome light fuse in it and that fuse is powered by the blue and red wire feed from the engine compartment fuse box DCC fuse. Also the dome fuse shares...

Q: Car overheated, now it won't start

Hello, thanks for writing in. I recommend checking for spark. The overheat may have damaged an ignition coil or possibly a camshaft sensor or a crankshaft sensor. If you would like help, consider having an expert automotive technician from YourMechanic...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.