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Daniel Wilson
Daniel Wilson,
Category: Jaguar
Satisfied Customers: 4877
Experience:  Owner at DJ Wilson
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Car still running after changing expansion tank

Customer Question

Car still running after changing expansion tank
Submitted: 5 months ago.
Category: Jaguar
Expert:  Daniel Wilson replied 5 months ago.

Hi John, My name is***** will be glad to try to help. What is the history here and more information on what you need for help?

Customer: replied 5 months ago.
I just replaced my expansion tank. And when starting the car the temperature gauge shows hot. And now when I turn the car off the car still runs or is cooling down. Plus, coolant everywhere in the engine now.
Customer: replied 5 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Daniel Wilson replied 5 months ago.

Did this problem exist befor the tank was replaced or is a new problem after the tank? Check for a stuck thermostat and also for restrictions in the cooling system. Otherwise if the waterpump is circulating the coolant as it should you could have a bad head gasket. Let me know

Customer: replied 5 months ago.
The problem started with the expansion tank having worn seals. So I bought a new one. And installed it today. Even with the worn expansion tank this never happens. I wonder did I just not put enough coolant, or did I not loosen the screw on top of tank?
Customer: replied 5 months ago.
Is this screw supposed to be tighten all the way
Expert:  Daniel Wilson replied 5 months ago.

Thanks for the photo. That is a bleeder to bleed the air from the cooling system on a refill. You need to loosen the screw slightly until it is straight coolant and no air bubbles then tighten it... Not to tight as it just needs to seal. Too tight it will break. Let me know