Q: What causes my car to keep overheating?

asked by on

My car started overheating in May. Firestone & my brother said my fan wasn't coming on so Firestone replaced the fan. It started overheating again in late July. It cut off on me and kept getting hot. It would act alright for a few days then it started getting hot again. It cut off on me after it overheated and I got home one day. I had the car towed to Firestone again. This time my check engine light came on. They replaced the spark plugs and ignition wires, the rotor and distributor cap, the heater comtrol valve, the water valve, the thermostat & the thermostat gasket, and the radiator. They did a fuel & induction decarbonization K cleaning, then a coolant flush with sealer and conditioner and antifreeze. The car ran fine for about 2 weeks, now it is running hot again. Firestone says it is an internal problem. They could not find a cooling problem. It did not run hot while it was staying still and running in the shop. Today when it ran hot, the antifreeze never left the resevoir.

My car has 210927 miles.
My car has an automatic transmission.

Thank you for writing in! Typically the thermostat and water pump are the primary sources of overheating on a 1997 Toyota Corolla. However, since the fluid never left the reservoir, it could be caused by a blockage in the coolant tubes; such as an air bubble. A good bet would be to have one of our local mechanics complete an overheating inspection. This would reduce the frustration of guessing and allow them to pinpoint the source of your issues; so that they could be fixed sooner rather than later.

Best of luck!

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
  1. Home
  2. Questions
  3. What causes my car to keep overheating?

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: My auto mate key fob is doing a double beep Everytime I lock or unlock my car, replaced the battery already. What does the double

Hi there. Unfortunately, since this is an aftermarket upgrade and not an OEM system, we really can't help diagnosis this issue. You might want to contact the manufacturer of the alarm / auto start system to seek their advice in...

Q: What materials do you need to do an oil and oil filter change?

In order of importance, you need safety glasses, nitrile gloves (or like gloves that will effectively keep used oil off your skin), a low capacity torque wrench (to re-tighten the drain plug typically to 18 ft. lbs., but see your...

Q: Car overheats, usually in the stop and go traffic

The problem may be due to the hydraulic cooling fan not working intermittently. There is a technical bulletin number 1-21-11 that says to replace the cooling fan hydraulic motor, which should correct the overheating problems. Your fan may work but...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...