Q: Overheating

asked by on

We have change the thermostat and thermostat housing. We also change the radiator cap. It is still overheating and no heat. The heat was working but only when I press the gas. We drove it for over a hour before it ran hot. What could it be? My car has an automatic transmission.

Hello, thanks for writing in. It sounds like the heater core and radiator core may be partly clogged. Have the flow through the radiator checked using a laser pointing temperature probe. If you find the radiator flow through the cores are restricted then replace the radiator and you may have to replace the heater core also or try to back flush it. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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. Q: 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: Battery dies out after a few days and everything checks out fine

Sounds like you may have a parasitic draw that is taking down the charge level on the battery. The vehicle has a process by which the computer in the vehicle are shutdown to prevent draining the battery. Sometimes a faulty...

Q: PO153 02 circut low response bank2 sensor 1 What does this mean?

Your car has Oxygen sensors in the exhaust system to give the computer information on the fuel mixture. The Oxygen sensor produces a small voltage when it heats up and if there is oxygen present in the exhaust, as in...

Q: Truck is overheating - 1992 Chevrolet C1500

There are a few things to check over. The water pump produces flow. To check this remove one of the heater hoses (small diameter) going to the heater core. Locate the hose end to a container to check flow of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...