Coolant Smell
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Freshman User
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Coolant Smell
I have an 01 supercab. 5.4 Triton 135k. I have begun to smell coolant the last couple of days. Have seen nothing leaking and truck doesn't run hot.
Will investigate more this weekend
Does anyone know where to start looking for this. It has to be leaking somewhere. Windows don't fog and the smell is there all the time. I live in florida so don't use much heat.
Not the heater core. Heat works fine and no smell from the vents.
Thanks in advance for any help on this problem.
Dan B
Will investigate more this weekend
Does anyone know where to start looking for this. It has to be leaking somewhere. Windows don't fog and the smell is there all the time. I live in florida so don't use much heat.
Not the heater core. Heat works fine and no smell from the vents.
Thanks in advance for any help on this problem.
Dan B
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Joined: Jun 2012
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Ironically it is still probably in the heater core. wether using the heat or not the water/coolant still passes through on its way from the engine back to the radiator. catching the smell early with could be a good thing, buts its still a couple day job for the home mechanic. the whole dash must be removed.
Senior User
Joined: Sep 2003
Posts: 411
Likes: 2
From: KS
Mine did same thing.
When on & warm can smell it with window/door open. When off can smell it at grill area. No drips, coolant level going down slowly. Replaced radiator ($150 Autozone, in stock). Problem solved. When warm & running i guess fan would blow smell towards cab area, when off smell would linger around front end.
When on & warm can smell it with window/door open. When off can smell it at grill area. No drips, coolant level going down slowly. Replaced radiator ($150 Autozone, in stock). Problem solved. When warm & running i guess fan would blow smell towards cab area, when off smell would linger around front end.
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Freshman User
Joined: Aug 2010
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Mine did same thing.
When on & warm can smell it with window/door open. When off can smell it at grill area. No drips, coolant level going down slowly. Replaced radiator ($150 Autozone, in stock). Problem solved. When warm & running i guess fan would blow smell towards cab area, when off smell would linger around front end.
When on & warm can smell it with window/door open. When off can smell it at grill area. No drips, coolant level going down slowly. Replaced radiator ($150 Autozone, in stock). Problem solved. When warm & running i guess fan would blow smell towards cab area, when off smell would linger around front end.
I will check the radiator closely this weekend.
Dan B
Logistics Pro
Joined: Jun 2010
Posts: 4,963
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From: East KY
My 97 F-150 developed the same exact smell yesterday. After reading a 20 page instruction sheet that somebody posted on the internet about how to remove the dash and heater core, I'm becoming a big fan of that Stop Leak stuff too. Good grief! 
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Senior User
Joined: Mar 2011
Posts: 462
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From: MN
Could be a leak in a hose on top the intake manifold and is just evaporating, hence the smell. Also could be a slow leaking and evaporating HC leak It's time for the process of elimination to diagnose the problem.
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Joined: Jul 2005
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i dont know what your using, but i have had very good luck with BARS liquid copper. About $10 a bottle at Auto Zone. Suppose to plug small holes in head gasket, cracked heads and manifold leaks.. I had very good luck for 3-4 years now. I redo every 12 months.
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well finally found my leak. it is the cossover pipe and is leaking on the passenger side.
So now I guess I have to replace the intake manifold.
what a stupid design.
Anyone ever replace the intake manifold?
Dan B
So now I guess I have to replace the intake manifold.
what a stupid design.
Anyone ever replace the intake manifold?
Dan B
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have a pics or instructions on how you do it. I can do most anything but this looks like alot of work. If i can get some illustrations then maybe I won't waste so much time trying to figure it out
Dan B
Dan B
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