Are you seeing any coolant loss on the ground or on the motor? Is the passenger side floor board wet?
I saw a some coolant on the ground - not a ton, but it was unusual. passenger side floorboard is not wet.
look on the motor and see if there is any coolant. See what the level is in the bottle
The reason im asking you to look at the motor is because a busted hose or leaking intake will put coolant on the motor and cause a smell in the cab
I don't see any coolant on the engine, but it looks like the hose that goes from the engine (next to the alternator) has some signs that it might be leaking. Would this be enough to send fumes and a "fog" through the defroster?
If a hose or anything that is leaking can get into the breather box. This lets fresh air in and allows the a/c or heater to work. Example like when you drive by a pastor with cows you will smell them through the a/c same thing here. Coolant will fog your window as well. I would carry it to a parts store or mechanic to get a coolant pressure test done. This will let you know were the coolant is leaking. Then if you do have a bad or small leaking heater core this will put water in your floorboard. Just look under the passenger side dash to make sure nothings wet because the heater core will fog a window
The hose that appears to leak goes from the front of the engine block to what I believe is the heater core. Is there anything special I need to know/do to replace this?
Thanks-I'll check this out and get back to you.
The end of the hose (at the firewall) has a special connector, and I don't have the required tool to get it off. I was planning to splice the hose as the leak is near the end that attaches to the engine block and the rest of the hose looks pretty good. apparently there was a flow restrictor built into the existing hose (this got damaged when I was taking it off). Do I need a flow restrictor? I really don't want to blow out my heater core.
Sorry for the delay here. It's the first time I have used this program. I just accepted your answer.
1 last question: There seems to be a reduced amount of "fog" coming through the vents, especially the defroster. Definitely not as bad as before. Is it normal for it to take a while for the "fog" to cycle through?
Thanks again for your help.