Removing the Blower Motor and Evap Core
06-06-2018, 08:44 PM
#1
Instructor
Thread Starter
Removing the Blower Motor and Evap Core
Fellow Vetters:
There is absolutely nothing left on my 91's firewall except a wiper blade motor and the blower motor/evap core, so removing the latter should be a snap... simply unscrew or unbolt lots of perimeter screws and nuts and pull the entire assembly off. Unfortunately, however, it won't come off! It feels as if there's another fasterner in the center of the assembly, but I sure don't see one, and there's nothing in front of it to block its movement. Just for fun, I went ahead and removed the blower motor to see if there were any hidden fasterers on the inside of the firewall. Nothing, nada, zip! Strangely enough, the blower squirell cage looked almost new... no dirt, leaves or mice! That surprised me almost as much as the fact the evap core wouldn't come loose. Any suggesstions? BTW, the FSM is kinda mum on this topic.
SnorT91Man
There is absolutely nothing left on my 91's firewall except a wiper blade motor and the blower motor/evap core, so removing the latter should be a snap... simply unscrew or unbolt lots of perimeter screws and nuts and pull the entire assembly off. Unfortunately, however, it won't come off! It feels as if there's another fasterner in the center of the assembly, but I sure don't see one, and there's nothing in front of it to block its movement. Just for fun, I went ahead and removed the blower motor to see if there were any hidden fasterers on the inside of the firewall. Nothing, nada, zip! Strangely enough, the blower squirell cage looked almost new... no dirt, leaves or mice! That surprised me almost as much as the fact the evap core wouldn't come loose. Any suggesstions? BTW, the FSM is kinda mum on this topic.
SnorT91Man
06-06-2018, 08:59 PM
#2
Race Director
Separate the two case halves. Remove them one side at a time. Seems like the left half (inboard half) has one bolt that goes from the inside of the car, into the case half, and is therefore blind from the outside.
06-06-2018, 09:22 PM
#3
There is a bolt that passes into the assembly from the interior portion of the HVAC. You have to open the interior assembly to access the bolt. If I remember right, there are two of them
06-07-2018, 12:12 AM
#5
Team Owner
Pro Mechanic
I just did this on an '89. I don't know about the bolt these guys are talking about; I removed all the hardware necessary to remove the inner panel (closest to the exhaust), w/no major issues, then I slid that panel out...then pulled the evaporator out. I didn't touch the outer part of the housing (until later).
Pics HERE.
Pics HERE.
06-07-2018, 07:39 AM
#6
I just did this on an '89. I don't know about the bolt these guys are talking about; I removed all the hardware necessary to remove the inner panel (closest to the exhaust), w/no major issues, then I slid that panel out...then pulled the evaporator out. I didn't touch the outer part of the housing (until later).
Pics HERE.
Pics HERE.
