93 Ram Van: losing vacuum?
#1
93 Ram Van: losing vacuum?
When I'm driving with the blower on, the air flow sometimes redirects down to the floor vents. If I let off the gas, it comes back through the dash vents. I assume this is a sign of a loss of vacuum to the air duct directors (or whatever they're called). Do you think I'm on the right track?
#2
You sure it's redirecting to the floor and not the defroster vents? Usually a loss of vacuum directs airflow to the defrosters. Besides a vacuum leak, this can also be caused by the in-line check valve (one-way valve) leaking. This check valve is located in the vacuum hose that leads to the vacuum reservoir for the heating system.
#3
When I'm driving with the blower on, the air flow sometimes redirects down to the floor vents. If I let off the gas, it comes back through the dash vents. I assume this is a sign of a loss of vacuum to the air duct directors (or whatever they're called). Do you think I'm on the right track?
#4
#5
how do i check for vacuum leaks? wahaca69@yahoo.com
Under the hood? Take an unlit propane torch and direct it to the suspected area. If idle speed increases sharply........you've found it!
Just be careful.......................