pics of the heater core project
01-31-2007, 07:33 PM
#21
The Rogue Mod
Join Date: Feb 2006
Location: Maryland Sucka's!!
Posts: 21,918
RE: pics of the heater core project
ORIGINAL: Maxwelhse
You should only need to change the evaporator (sometimes called the dryer; the big beer can under your hood) if you unhooked it. You can change the heater core w/o disconnecting the A/C if you just bend the bracket on the firewall past its mounting stud to free some slack in the HVAC box.
If you unhooked it you'll need to change the evaporator and orifice tube and re-charge. I've heard 'Stangs respond well to R134a (much cheaper than the R12) so a conversion may be a huge cost save for ya. I plan to do mine in the spring since I have my own A/C charging gear.
After 16 years the R12 still blows "cool" though.
ORIGINAL: alec3369
I have one question. I heard somewhere that i should change the ac evaporator ( or something like that) also. Should i change this while i have the dash off?
I have one question. I heard somewhere that i should change the ac evaporator ( or something like that) also. Should i change this while i have the dash off?
If you unhooked it you'll need to change the evaporator and orifice tube and re-charge. I've heard 'Stangs respond well to R134a (much cheaper than the R12) so a conversion may be a huge cost save for ya. I plan to do mine in the spring since I have my own A/C charging gear.
After 16 years the R12 still blows "cool" though.
01-31-2007, 07:36 PM
#22
6th Gear Member
Join Date: Jan 2006
Location: new jersey
Posts: 6,635
RE: pics of the heater core project
ORIGINAL: 7upedition
on any 87-93 regardless of a/c or not, yo need to pull the dash to access the heater core, in 86 an older non a/c theres an access panel behind the glovebox
on any 87-93 regardless of a/c or not, yo need to pull the dash to access the heater core, in 86 an older non a/c theres an access panel behind the glovebox
01-31-2007, 07:44 PM
#23
4th Gear Member
Join Date: Jan 2007
Location:
Posts: 1,108
RE: pics of the heater core project
ORIGINAL: PRO50SC
The evaporator and the drier(aka the accumulator) are two different pieces. Get your facts straight before givving out mis info!!!
The evaporator and the drier(aka the accumulator) are two different pieces. Get your facts straight before givving out mis info!!!
And the dryer is the beer can looking thing... Which makes the point the same...
Thanks for the correction though.
01-31-2007, 10:51 PM
#24
5th Gear Member
Join Date: Aug 2006
Location: Haverhill, MA
Posts: 3,664
RE: pics of the heater core project
uhh blue.. those "extra" 3 bolts on my hvac case were far behind the firewall cowl. i lost a 3/8's wrench tryin to get to them.
instead i just got very angry and i ripped the case open as much as i could with just the 2 bolts off the front... worked pretty good.. besides the speedo cable snapping lol
instead i just got very angry and i ripped the case open as much as i could with just the 2 bolts off the front... worked pretty good.. besides the speedo cable snapping lol
02-01-2007, 12:16 AM
#25
2nd Gear Member
Join Date: Oct 2006
Location: Florida
Posts: 371
RE: pics of the heater core project
I'm at that stage in this same project, dash is out, entire hvac console is out, was a pita to replace the accumulator, had to slice the whole case open carefully so I can rtv/bolt it back together. Wiring behind the dash is in really rough shape and can't find a schematic....have fun!
02-01-2007, 01:35 AM
#26
1st Gear Member
Join Date: Dec 2006
Location: St. Louis, MO
Posts: 42
RE: pics of the heater core project
I have done 2 mustang heater cores in my lifetime so far. The first was for my evil sister's 77 Mustang II, it was the early 80's and I remember it was a real bitch. (Wow, that shows my age!) The second mustang heater core was an 87 GT about tens years ago for a friend of mine and I remember it was a real bitch also. When my heater core goes out will you guys come over and help me? 
02-01-2007, 12:05 PM
#28
in limbo
Join Date: Jan 2007
Location: Iowa
Posts: 7,300
RE: pics of the heater core project
i was wondering, my heat use to work until i replaced my water pump which was bad. when the water pump was replace my heatercore like exploded coolant all over my floor. so now i have to replace the core. i bypassed the core for now and now my a/c and heat controlls dont work. did i disconnect something or did somethign else go bad? no air blows out at all from any vents
02-01-2007, 02:47 PM
#29
4th Gear Member
Join Date: Jan 2007
Location:
Posts: 1,108
RE: pics of the heater core project
ORIGINAL: FivePointOhh
i was wondering, my heat use to work until i replaced my water pump which was bad. when the water pump was replace my heatercore like exploded coolant all over my floor. so now i have to replace the core. i bypassed the core for now and now my a/c and heat controlls dont work. did i disconnect something or did somethign else go bad? no air blows out at all from any vents
i was wondering, my heat use to work until i replaced my water pump which was bad. when the water pump was replace my heatercore like exploded coolant all over my floor. so now i have to replace the core. i bypassed the core for now and now my a/c and heat controlls dont work. did i disconnect something or did somethign else go bad? no air blows out at all from any vents
As far as no HVAC controls go, something is hosed but the two shouldn't be directly related.
02-01-2007, 03:00 PM
#30
6th Gear Member
Join Date: Jan 2006
Location: new jersey
Posts: 6,635
RE: pics of the heater core project
my heater core went then i put the bars stop leak in it...i know bad idea it was 2 years ago...then my radiator got destroyed by my fan and so did my water pump so i replaced them both and 3 days later my heater core was leaking like a mother not just on the passenger side but it was flowing arcoss something onto the drivers side not fun trying to drive with slippery feet