Vacuum line on heater box
#1
Vacuum line on heater box
1993 f350 IDI no turbo 7.3 5 speed std. Shift. On top of heater box all the way to right next to firewall under hood there is a vacuum motor with no vacuum line at all I think it is the fresh air flapper. Is there someway to figure out where does it go? Thanks
---AutoMerged DoublePost---
It don't show anywhere in the book
---AutoMerged DoublePost---
It don't show anywhere in the book
Last edited by hobbieman; 02-13-2014 at 08:24 PM. Reason: Automerged Doublepost
#6
That motor is what makes the MAX A/C option on your HVAC controls work. It's supposed to isolate the heater core from the rest of the box. The hose probably got brittle from heat and time and broke off. When I installed the heater core bypass valve on my truck, that hose crumbled in my hand when I removed it. I was able to chase it back a bit to where it was still good and connect another hose to it.
The following users liked this post:
hobbieman (02-15-2014)
Thread
Thread Starter
Forum
Replies
Last Post
Gm3500
Chevy/GMC 6.2L and 6.5L
9
05-07-2015 11:01 AM