Hi,
The radiator itself won't have a cap. Everything is done via the reservoir. Here is my concern. If the temperature gauge isn't indicating a problem but coolant is coming out of the reservoir, we may be getting compressed air into the cooling system. This is usually the result of a faulty head gasket.
If you are concerned that the coolant is low, see if the heater works. If it does, that isn't the issue.
I need to know what engine is in this vehicle. There are three options. They came with either a 3.5L, a 3.6L, or a 2.4L. Let me know that. Also, when the engine is running and not losing coolant, take notice if there are air bubbles in the coolant.
Take a look through this link and let me know if you are comfortable performing any of the inspections/tests:
https://www.2carpros.com/articles/head-gasket-blown-test
Also, take a look at this link as well:
https://www.2carpros.com/articles/recognizing-the-symptoms-understanding-a-blown-head-gasket-in-your-vehicle
Let me know.
Joe
Thursday, April 20th, 2023 AT 7:47 PM