Johny Utah Posted February 2, 2021 Report Share Posted February 2, 2021 (edited) How hard is it to replace a heater core on a 03 Tundra? The heat still works fine. I can smell antifreeze when I’m driving it though. Is the heater core just leaking then? Edited February 2, 2021 by Johny Utah Quote Link to comment Share on other sites More sharing options...
Crossle Posted February 2, 2021 Report Share Posted February 2, 2021 Flat rate is 6.3 hours. Are you seeing coolant inside the truck? If not, you could still smell coolant from inside the truck if it's leaking in the bay. Quote Link to comment Share on other sites More sharing options...
Johny Utah Posted February 2, 2021 Author Report Share Posted February 2, 2021 That’s a pretty expensive job then. I have not noticed any. I’m going to have to look closely at the carpet then. Thanks Quote Link to comment Share on other sites More sharing options...
Johny Utah Posted February 9, 2021 Author Report Share Posted February 9, 2021 I could not feel or see any wet spots. I can’t see any drips under the engine. I don’t see anything leaking in the engine bay either. Quote Link to comment Share on other sites More sharing options...
iwashmycar Posted February 9, 2021 Report Share Posted February 9, 2021 Maybe you luck out and it’s dripping at the firewall connections and somehow dripping down into the trans or exhaust. All smell no drips. Still needs found though. Quote Link to comment Share on other sites More sharing options...
Johny Utah Posted March 9, 2021 Author Report Share Posted March 9, 2021 I can’t find any leaks. I can’t take the smell in the cab. If I by pass the heater core the air conditioning still works doesn’t it? Quote Link to comment Share on other sites More sharing options...
STEVE-O Posted March 10, 2021 Report Share Posted March 10, 2021 I can’t find any leaks. I can’t take the smell in the cab. If I by pass the heater core the air conditioning still works doesn’t it? Yes You really need to actually diag where it is coming from before bypassing things and not solving your problem Quote Link to comment Share on other sites More sharing options...
Johny Utah Posted March 10, 2021 Author Report Share Posted March 10, 2021 It has to be the heater core with how strong the smell is inside the cab. Quote Link to comment Share on other sites More sharing options...
Geeesammy Posted March 11, 2021 Report Share Posted March 11, 2021 I will diagnose it but A. It's not going to be free B. Neither will the repair Quote Link to comment Share on other sites More sharing options...
99FLHRCI Posted March 11, 2021 Report Share Posted March 11, 2021 I can’t find any leaks. I can’t take the smell in the cab. If I by pass the heater core the air conditioning still works doesn’t it? A pressure tester may help a lot. If you don't have one, I think some of the parts stores loan/rent them. Quote Link to comment Share on other sites More sharing options...
Johny Utah Posted March 11, 2021 Author Report Share Posted March 11, 2021 I will diagnose it but A. It's not going to be free B. Neither will the repair How much to diagnose? Would I come to you? Or you come to the truck? Quote Link to comment Share on other sites More sharing options...
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