warm cab
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Senior User
Joined: May 2002
Posts: 298
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From: San Diego, CA
warm cab
Hey Fellas,
I drove the truck about 60 miles last night and with everything off (blower, ac, heater) the truck seems to be warming the cab some how. I'm not sure if I have a hole in the firewall or if vents are open.
What can I check or look for to prevent it from warming up in the cabin....
The exhaust leak that I have is also causing the cab to smell like burnt diesel.
Thanks in advance.
Erik
I drove the truck about 60 miles last night and with everything off (blower, ac, heater) the truck seems to be warming the cab some how. I'm not sure if I have a hole in the firewall or if vents are open.
What can I check or look for to prevent it from warming up in the cabin....
The exhaust leak that I have is also causing the cab to smell like burnt diesel.
Thanks in advance.
Erik
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
OK several things.
If your vacuum pump is weak the heater defaults to defrost position.
The coolant always circulates through the heater core.
So if the vacuum is low, the heat is coming out the defroster.
Also if you are getting a lot of exhaust smell in the cab you may have a hole in the firewall letting engine compartment heat into the cab.
If your vacuum pump is weak the heater defaults to defrost position.
The coolant always circulates through the heater core.
So if the vacuum is low, the heat is coming out the defroster.
Also if you are getting a lot of exhaust smell in the cab you may have a hole in the firewall letting engine compartment heat into the cab.
Elder User
Joined: Mar 2002
Posts: 529
Likes: 0
From: France
In the cab too!
I took off the heater core shroud once to change a leaking heater core,noticed that the only thing that keeps the heat from coming in is a small trap door which pivots to either let the heat in or keep it out,if that door doesn't close all the way the heat will come continuously in the cab no matter what you do.The heated fluid does a continuos journey from the engine, through the core and back to the engine, no stop or bypass valves at all on the circuit!!
Saigon
Saigon
Last edited by Saigon; Nov 5, 2005 at 10:20 AM.
Posting Guru
Joined: Jan 2005
Posts: 1,051
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From: Douglas, Georgia
wow.... your truck has insulation AND carpet?
mine has neither, just a rubber mat... good thing southern georgia doesn't get hot.
gotta love the old 'custom' series. I like rolling up windows and bench seats :P
heck if I got comfortable, I'd probably fall asleep driving home from a jobsite.
mine has neither, just a rubber mat... good thing southern georgia doesn't get hot.
gotta love the old 'custom' series. I like rolling up windows and bench seats :P
heck if I got comfortable, I'd probably fall asleep driving home from a jobsite.
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