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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

Resolved A/C troubles

  • Thread starter Thread starter GTFIVE.O
  • Start date Start date Jun 5, 2023
G

GTFIVE.O

Member
Jun 15, 2022
8
1
13
Chicago
Jun 5, 2023
#1
  • Jun 5, 2023
  • #1
So I just replaced the temperature cable and now the A/C doesn't blow out the vents, it just blows out the defrost? All dash vents are open.
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,985
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polk county florida
Jun 5, 2023
#2
  • Jun 5, 2023
  • #2
Check the vacuum line that supplies the system.
 
Reactions: GTFIVE.O

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,274
17,964
224
Massachusetts
Jun 5, 2023
#3
  • Jun 5, 2023
  • #3
Vac line issue. Black line passes through the rubber grommet on the firewall and feeds the HVAC controls. From there, the various registers/diverters get activated based on the selector position
 
Reactions: GTFIVE.O and General karthief
G

GTFIVE.O

Member
Jun 15, 2022
8
1
13
Chicago
Jun 6, 2023
#4
  • Jun 6, 2023
  • #4
Is this a major deal or is it just reattaching the line ? as I am not a mechanic just handy and know enough to make it dangerous...lol
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,274
17,964
224
Massachusetts
Jun 6, 2023
#5
  • Jun 6, 2023
  • #5
Vacuum lines are not dangerous. If the line has come off you need to locate it and reconnect.

Start at the engine bay along the firewall. On the pass side the heater core pokes through the firewall. In the same grommet, is a small black vac line. Is it connected to the main lines in the engine bay?

If so, your next stop is pulling the hvac panel out and making sure those vac lines are properly connected.
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,985
10,615
213
polk county florida
Jun 6, 2023
#6
  • Jun 6, 2023
  • #6
Let's see,
Nope, not difficult at all, the black plastic vac line starts at the tree on the firewall (if nothings been fussed with under the hood)
Ok, Mike posted first
the only danger is your helper poking you in the eye when they hand you the new vac line
 
G

GTFIVE.O

Member
Jun 15, 2022
8
1
13
Chicago
Jun 6, 2023
#7
  • Jun 6, 2023
  • #7
Thank you ! There was a yellow vac line that I must have disconnected when I replaced the temp contol cable. Oi reattached that and it good to go ! Thank you for all your help and time !!
 
G

GTFIVE.O

Member
Jun 15, 2022
8
1
13
Chicago
Jun 6, 2023
#8
  • Jun 6, 2023
  • #8
Mustang5L5 said:
Vacuum lines are not dangerous. If the line has come off you need to locate it and reconnect.

Start at the engine bay along the firewall. On the pass side the heater core pokes through the firewall. In the same grommet, is a small black vac line. Is it connected to the main lines in the engine bay?

If so, your next stop is pulling the hvac panel out and making sure those vac lines are properly connected.
Click to expand...
Thank you ! There was a yellow vac line that I must have disconnected when I replaced the temp contol cable. Oi reattached that and it good to go ! Thank you for all your help and time !!
 
G

GTFIVE.O

Member
Jun 15, 2022
8
1
13
Chicago
Jun 6, 2023
#9
  • Jun 6, 2023
  • #9
Thank you ! There was a yellow vac line that I must have disconnected when I replaced the temp contol cable. Oi reattached that and it good to go ! Thank you for all your help and time !!
 
Reactions: nickyb
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