Anyone ever experience a coolant leak after using their heater. The strange thing is I can not find the leak. It only leaks after the truck cools down. I have searched for the leak with engine running after shutting it off. I can't find the leak. The only evidence of the leak is when I come out from work there is a small puddle of coolant under the truck. It is driving me nuts. No coolant under truck when using ac. any clue as to what is happening? This has been going on for a year or two.
Where under the truck does it puddle up? My guess would be near the firewall based on what you have said. It has to do something w/ the heater hose assembly or heater core. Since you see the puddle on the ground, I'm thinking it isnt the heater core because that would leak in the truck
__________________ 2005 Nismo 2WD:Titan Swap'd, Camburg UCA's, Titan Bilstein adjustables, Rancho 9000's, Destination MT's, Shrock sliders, Calmini bumper, Hella 500's,
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If it is your heater core, you will typically have a film of Glycol on the inside of the windshield.
Personally, I would clean the underside of the vehicle really well, run the heck out of the heater and park it in a garage where you can watch for the leak. Also, check where your hoses go through the firewall to your heater core.
Let us know what you find the problem to be. Pictures always help... Just sayin'
Sorry to dig up a year old thread but I'm just wondering if the op solved his problem. I'm having the same issue where my truck will leak coolant after my truck cools after using the heater. Doesn't leak unless I use my heater. It's not a fast leak, after a few days of the truck sitting the puddle will be about 10 inches diameter. The puddle normally builds under the front diff. I replaced 2 hose clamps on the main large hose that goes into he bottom right of the rad and at the other end where it connects to the motor?? When I looks from under the truck I cannot tell where it's running down from.
I noticed this happening since the weather has changed, I know sometime the cooler weather can mess with the hoses and clamps.
2006 CC SE 4x4, Wet Okole Seat Covers, Installed Factory Roof Rack, Factory GPS housing and Garmin 750.
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