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Author
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Topic: Smoke From Defrost and Heater
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arcadianate
Journeyman Posts: 11
From: Brighton, MI USA
Registered: Feb 2004
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posted 02-14-2004 04:16 PM
   
Can anybody tell me how I can fix smoke from the defrost and heater in my 1965 mustang 289. When the thermostat opens smoke pours into cockpit from heater and defrost even in off position. I don't see that heater core is leaking, but maybe.
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trashline
Gearhead Posts: 1217
From: Levittown, Pa
Registered: Dec 2003
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posted 02-14-2004 04:33 PM
im gonna say leaky heater core it might not be smoke it might be water vapor. if theres a hole in the heater core then it will mist and go all over your windshield. is there a residue on your window does anything feel moist? open your trap door on the heater box is there water in there that you can see? remove the heater box unbolt it from the fire wall inside the engine compartment and watch the coolant hoses they might not go to far and youll have to remove them. if the heater core is at falt let me know i have one for sale brand new in box for like 20 bucks or somthing.------------------
1966 mustang coupe
200ci 3 speed tranny
msd 6a ignition, blaster 2 coil, 2 inch exhaust to a glass pac, stock rear, single out header, cold air intake (homemade).
white w/ black interior
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arcadianate
Journeyman Posts: 11
From: Brighton, MI USA
Registered: Feb 2004
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posted 02-14-2004 04:37 PM
Thanks, I am a rookie. It could be water vapor. Would it smell like coolant boiling (it doesn't).
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johnmustang
Gearhead Posts: 5701
From: British Columbia , Canada
Registered: Nov 2001
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posted 02-14-2004 04:40 PM
I am assuming that you mean steam and not smoke. If it truly is smoke you have a serious electrical problem and should not drive your car until you repair your wiring and check your heater motor. I really am sure you mean steam and if this is the case just replace your heater core because it is pooched and while you are at it check your heater plenum and replace if necessary ( new ones are cheap and made of very durable plastic)also you may as well change your heater hoses if they are at all suspect. Do the hoses now because they are a b!tch to do after you have done your core, because on the 65`s the core has to come out again to change the hoses. It is not a real hard job just very finicky and a pain in the a$$. Also before you replace the core and after you have it out attach your heater hoses together with any kind of plumbing connection and thoroughly flush your cooling system and make sure it is good and clean before running your coolant through the new heater core. This will take car of your problem.Oh, just about forgot welcome to M&M  ------------------
JOHN
65 FASTBACK 2+2.....14.44 @ 107mph 1/4
87 TAURUS WAGON
03 F150 XLT SUPER CREW 4X4 SHORT BOX
Member:Vancouver Island Mustang Association
M&M #1710
65 FASTBACK
2003 F150 XLT SUPER CREW 4X4
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arcadianate
Journeyman Posts: 11
From: Brighton, MI USA
Registered: Feb 2004
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posted 02-14-2004 04:48 PM
Thanks, keep the comments coming. I need all the help I can get. I know very little about this stuff.
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trashline
Gearhead Posts: 1217
From: Levittown, Pa
Registered: Dec 2003
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posted 02-14-2004 05:02 PM
yea it is a pain but the best bet would be to drain and flush the system. its easy and a good thing to do plus you dont have to worry about pouring coolant on your floors. start the car turn on the defroster and touch the window if it feels slimy like coolant then the core is probably bad. it should smeel like coolant if it smeels like elecitrical burning then turn the car off the blower motor could be bad. im guessing core.
p.s. welcome to m and m
------------------
1966 mustang coupe
200ci 3 speed tranny
msd 6a ignition, blaster 2 coil, 2 inch exhaust to a glass pac, stock rear, single out header, cold air intake (homemade).
white w/ black interior[This message has been edited by trashline (edited 02-14-2004).]
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arcadianate
Journeyman Posts: 11
From: Brighton, MI USA
Registered: Feb 2004
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posted 02-14-2004 05:08 PM
It must be steam, the fan motor does not have to be on for it to steam.
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trashline
Gearhead Posts: 1217
From: Levittown, Pa
Registered: Dec 2003
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posted 02-14-2004 05:24 PM
yea it is probably the heater core. they get old had to replace mine to in my f150 but i have a new one that i got with my mustang that ive been trying to sell if your interested let me know il give it to ya for 20 bucks shipping will probably be like 5 bucks if your interested let me know il send you pics------------------
1966 mustang coupe
200ci 3 speed tranny
msd 6a ignition, blaster 2 coil, 2 inch exhaust to a glass pac, stock rear, single out header, cold air intake (homemade).
white w/ black interior
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bud4660
Gearhead Posts: 495
From: Mesquite, Tx. M&M #2925
Registered: Apr 2003
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posted 02-14-2004 09:00 PM
Take the two heater hoses and tie them together. If the problem goes away then the heater core is leaking. If not, then you know to look for something else. It should smell kind of sweet if its leaking.
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