Q: My 2002 Pontiac sunfire is leaking coolant. The radiator, water pump, and head gasket has all been replaced. What’s the problem?

asked by on

I’ve replaced the head gasket, the radiator, and water pump and my car is still leaking coolant. It’s pooling over in front of the passenger side of the car. My hoses up top are fine and aren’t loose. I filled my coolant tank up last night and woke up to as somewhat dried up puddle. It’s definitely coolant.

My car has 145000 miles.
My car's transmission is unknown to me.

A trained mechanic would probably pinpoint the origin of the leak just on visual examination but if the origin is not clear a simple pressure test will pinpoint it. Engine coolant can leak externally through a hose, radiator, water pump, etc. or internally due to a leaking head gasket and sometimes a leaking intake manifold gasket depending on the engine design. As noted, external leaks are typically found by simple pressure testing of the cooling system. To find the leak that exists in your case, and get the required repair estimated, please request an engine cooling system leak diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. My 2002 Pontiac sunfire is leaking coolant. The radiator, water pump, and head gasket has all been replaced. What’s the problem?

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: Horrible grinding issue around starter/flywheel

The starter nose bushing is worn and allowing the starter drive to go too far out causing the grinding noise. Replace the starter and make sure any shims that are required be reinstalled unless new starter directions state do not...

Q: Car won't turn over or start.

Since remote starters were not factory options, there is an aftermarket system in your vehicle. I would start there. If you can find out who the manufacturer of the system is, contact them to see if a wiring diagram is...

Q: Have a 3.8 and I changed the spark control module and the code keeps coming up 1993 Pontiac Bonneville

Hello - regarding your ignition system problem - it sounds like replacing the spark control module wasn't the correct "fix". Without knowing what problem code was set, it's hard to know what the correct response should be. If you can...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.