15 vacuum to the 4x4 hub solenoids.
Ford ranger heater control valve vacuum line.
13 vacuum from the engine intake manifold.
A c vacuum reservoir tank and bracket.
I have a ford ranger pickup 1998.
The loss of vacuum can be caused by a break in a vacuum line or a faulty vacuum switch.
1983 ford ranger 2 8l v6 engine vacuum diagram 1984 ford ranger 2 3 liter 4 cylinder vacuum line diagram vacuum diagram definitions abbreviation description a cl located in the air cleaner a cl dv air cleaner diverter valve a cl bi met air cleaner bi metallic valve a cl cwm air cleaner cold weat.
A heater control valve can fail in several ways.
Vacuum control motor air inlet duct door.
The heater is always on.
Water diverter valve full vacuum position 17.
Since a vacuum operated valve defaults to the fully open heat on position when vacuum isn t applied a loss of vacuum is the first thing to suspect in a heat always on condition.
10 recirculated air inlet.
I found a broken vacuum line that goes to the coolant hoses and fixed it but it doesn t seem to fix the problem.
A c heater function selector switch.