Q: I have an overheating problem. Its not the fans! With the radiator cap off I can't really see the fluid flowing until I hit the gas.

asked by on

I have replaced the clutch fan with electric fans . sometimes it doesn't get over the N. (NORMAL). I've started the car with the rad cap off and it didn't blow water out. So it's not the head gasket. I'm trying to figure out whether it's the water pump. The T stat... Or the Radiator. And I dont loose water until it seems like it's backing up and overfilling and flowing out of the over flow jug. Boiling water. That's when it over heats. Any ideas. Thanks I advance.

My car has 174000 miles.
My car has an automatic transmission.

Hi there - lets look at the behavior overall. Did you replace the clutch fan with electric fans because of an overheating issue? If so, that fundamental issue is likely still present. If temp rises quickly to overheat (matter of a few minutes, even at idle), thermostat is stuck shut, or - there is an air pocket in the cooling system (if the system wasn’t bled properly after work where the coolant was drained) - that will cause fairly violent "boiling" inside the engine, and blow water/steam out of the overflow jug.

A blown headgasket can just "superheat" the coolant over 5-15 minutes without "blowing" water out under pressure if the leak is small enough. You can chemically test the coolant for the presence of combustion gases. If you make the fans run all the time does it still overheat? Does it only overheat very slowly over time? If so, it may just be a clogged radiator (inside or out).

I would recommend having your car’s overheating issue inspected by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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. I have an overheating problem. Its not the fans! With the radiator cap off I can't really see the fluid flowing until I hit the gas.

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 draining and. Starter motor getting hot

You need to have the battery cables checked to see if they are bad by doing a voltage drop test. If one or both of the cables are bad, it will overheat the starter and not recharge the battery sufficiently....

Q: Q: Car overheating

You might have an air pocket in the cooling system. Air pockets are common on some vehicles and can be a headache. When the cooling system is opened and coolant drained, air from the atmosphere gets in the engine. Once...

Q: power steering is leaking / I have the pump/ pressure hose / belt

Any rubber component on a vehicle system is typically leak prone after about a 6 year lifetime particularly, for example, if you break the seal that a rubber hose in a power steering system makes to a nipple (on pump...

Related articles

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...