vacuum line problems?

1999 FORD RANGER
16,200 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
JOHN YOUNG
  • MEMBER
  • 1 POST
when i turn the heater on,it is not pulling a vacuum in the vacuum line that plugs into the vacuum control motor. as a result,this prevents the vent from opening to allow air flow across the hearter core.why am i not getting a vacuum in this line. i beleave all the controlls are working correctly.
Sep 12, 2010 at 5:48 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
BILLYMAC
  • CAR REPAIR CONTRIBUTOR
  • 2,204 POSTS
first thing to check is do you have vac at the heater switch. if yes then the switch is not switching vac may be disconnected at switch ..check vac line comeing inside truck from firewall may be broken or kinked
Mar 6, 2019 at 5:44 PM
Advertisement
Avatar
JEFFCOW
  • MEMBER
  • 1 POST
my ranger has a broken vacuum line and i need to know where it goes. i have figured out that one line goes to the purge valve and i don't know where the other one goes. please help......................................................................................
Jan 5, 2020 at 7:54 PM (Merged)
Avatar
TY ANDERSON
  • CAR REPAIR CONTRIBUTOR
  • 719 POSTS
Here is a vacuum diagram for the 2.3l,3.0L & 4.0L. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Jan 5, 2020 at 7:54 PM (Merged)
Avatar
NANA614
  • MEMBER
  • 2 POSTS
changed the heads and cannot remember where the vacuum lines go
Jan 5, 2020 at 7:55 PM (Merged)
Avatar
HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
there are 2 different routings im sending both
Images (Click to enlarge)
Attached Media
Attached Media
Jan 5, 2020 at 7:55 PM (Merged)
Avatar
HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
screwed p both are the same on first reply
Image (Click to enlarge)
Attached Media
Jan 5, 2020 at 7:55 PM (Merged)
Avatar
NANA614
  • MEMBER
  • 2 POSTS
thank you for your answer
Jan 5, 2020 at 7:55 PM (Merged)
Avatar
JOHN FRASER
  • MEMBER
  • 1 POST
How can I download a schematic showing the vacuum line configuration for a 1990 Ford Ranger XLT with the 4.0 engine? Where can I download a schematic drawing of the vacuum line configuration
Jan 5, 2020 at 7:55 PM (Merged)
Avatar
WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 POSTS
See if this helps
Jan 5, 2020 at 7:55 PM (Merged)