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I'm a new member and I have a completely stock 07 Titian Se, CC, 4WD with 2000 odd miles on it. Every now and then I get a coolant smell that I pick up as soon as I open my door. All gauges are all within normal limits (including temps). When the smell occurs the coolant is circulating throught the over-flow tank. I can see it running down the side and it actually has the tank stained green. I have owned a few vehicles in my time and traded an 02 Frontier w/80,000 mi, which I bought new, and have never really seen the coolant circulate like that (maybe I never had the need to look). I took it to my dealer who told me that it is normal. They told me they pressure tested it and found no leaks or problems. I find it hard to believe that Nissan would manufacture a vehicle that would give off a smell of coolant. I did have a few problems with that particular dealer in the past with my Frontier because my service manager had a Frontier and would always say, "well mine does that too". I just don't think this is normal and wanted some thoughts. Thanks.
 

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If it isn't puking or overheating, it's probably okay.
 

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There have been issues with the radiator caps not venting properly. It is the one on the radiator itself, not the one on the overflow tank. There is a TSB on it.

Duane
 

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just go and get it pressure tested at the dealer theyll have to change out the cap on the radiator if not holding pressure properly. had mine replaced about a two months ago but never had the smell like the one youre describing.
 

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Yeah that is not normal no leak should even be visible anywhere. There is also a recall about the cooling fan on the 07 Titan ask your dealer and see if your truck is included. Goodluck.
 

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Look on the overflow tube at the radiator neck. I have a tiny leak there. Not enough to drop the level but the tiny seepage is enough to give off the smell of coolant and leave green scale on it. Two and a half years and 47,000 miles and never had to add coolant although it's time to flush and change it now.

Clint
 

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thad5515 said:
I'm a new member and I have a completely stock 07 Titian Se, CC, 4WD with 2000 odd miles on it. Every now and then I get a coolant smell that I pick up as soon as I open my door. All gauges are all within normal limits (including temps). When the smell occurs the coolant is circulating throught the over-flow tank. I can see it running down the side and it actually has the tank stained green. I have owned a few vehicles in my time and traded an 02 Frontier w/80,000 mi, which I bought new, and have never really seen the coolant circulate like that (maybe I never had the need to look). I took it to my dealer who told me that it is normal. They told me they pressure tested it and found no leaks or problems. I find it hard to believe that Nissan would manufacture a vehicle that would give off a smell of coolant. I did have a few problems with that particular dealer in the past with my Frontier because my service manager had a Frontier and would always say, "well mine does that too". I just don't think this is normal and wanted some thoughts. Thanks.
Mine has done that since day one and has been pressure tested a few times and found to be fine. I did have the radiator cap replaced once but I still get a whiff every now and then...especially after towing. I never lose any coolant either. I'd have it checked at the dealer but I think they'll find it ok and a little coolant smell is normal for this truck.
 

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My 04 has always had this. Certain weather conditions seem to make it more noticeable (winter).

The dealer has tested several times and replaced radiator cap but never found anything; never lost any coolant.

Smell is near overflow bottle. My relatives F-150 and Expedition do the same.
 

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Discussion Starter #9
Thanks for all the info. Nice site.

Todd
 

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I took mine into the dealer today because I saw some dried up coolant around the water pump and some other areas, dealer said it was a tiny leak coming from the Thermostat housing, they said its fine to drive until the part gets in and they can replace it. Any else ever hear of that one?
 

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HudsonValleyTitan said:
Mine has done that since day one and has been pressure tested a few times and found to be fine. I did have the radiator cap replaced once but I still get a whiff every now and then...especially after towing. I never lose any coolant either. I'd have it checked at the dealer but I think they'll find it ok and a little coolant smell is normal for this truck.
I agree.

I get the smell sometimes also after towing or hauling butt. The Titans cooling system is unique. It doesn't have a pressure relief cap. The overlow tank is part of the system.
 

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I had the same problem way back needed to replace the cap.
 

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walleeme said:
If it isn't puking or overheating, it's probably okay.
The topic wasn't your avatar.
 
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