Coolant smell while driving

[jimwww]

Hmm. I have a coolant smell from time to time when driving - it is strong. No dripping from beneath the engine while engine is on - no liquid beneath it when engine off. Pressure tested the system. Cannot find anything. Not coming though exhaust. Any ideas?

 

[TheWiz]

Maybe the heater core?

 

[Joe Dirt]

Yep, sounds like a bad/in the process of going bad heater core.

 

[gtyates]

Could also be the hearter control valve. Mine was leaking. It is the device next to the blower housing that has about 5 hoses conected to it as well as 1 small vacuum line. Very common for those to leak.

 

[jimwww]

Great ideas. I will bring them up to my mechanic when I see him next.