Leak under passenger side - 2006 Jeep Commander - JeepForum.com
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Unread 06-19-2014, 07:48 PM   #1
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2006 XK Commander 
Join Date: Jun 2014
Location: Plano, TX
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Leak under passenger side - 2006 Jeep Commander

Last week while waiting at a Starbucks drive-thru my car began to over heat. My radiator reservoir was basically empty and when I returned to work there was a large puddle where my car had been. I had my thermostat replaced and it no longer over heats, but I am still having to refill my reservoir at least every 2-3 days. Any ideas before I go and spend more money?

Thank you,
A single mom who does not want to get ripped off by a mechanic

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Unread 06-19-2014, 09:06 PM   #2
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Join Date: Jul 2011
Location: Blue Springs, MO
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Who replaced the t-stat?

Are you needing to refill the reservoir because the Jeep is dumping coolant?

What is the coolant level in the radiator?

Condition of the upper/lower radiator hoses and lines going in/out of the heater core? (the ones that go through the firewall on passenger side)

If you aren't leaking coolant anywhere then it is likely that the system wasn't filled properly when the t-stat was changed and the coolant level throughout the system is too low.

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Unread 06-20-2014, 03:01 PM   #3
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Location: Bellmore, NY
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Check the oil to make sure there is no coolant in it. Hopefully not, but can be a leaky head gasket due to the overheat. If there are no visible leaks u need to pressure test the cooling system
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