Originally Posted by
guitarpicr
Hey guys - I have a 2006 E-350 doing same thing under load to defrost & then comes back to normal a/c vents once I top the hill or let off the gas. Anyone know where the vacuum resevoir & check valve are located on the 2oo6 ? Still above pass. side wheel well ? Thanks, Bill
To date I've not seen or read of anyone actually finding that damn thing on one of our E-Series.
Some have resorted to using a new reservoir grafted into the exiting under hood line eliminating the hidden factory part.
Here's a link I found very interesting and helpful:
https://www.ford-trucks.com/forums/1...-problems.html
Originally Posted by
katoranger
I sucked and the 7 year old felt for air.
I don't have a spare 7 year old so instead bought a gently used Mity-Vac set!
A lot of heating/cooling issues on our later E-Series can be traced to the vacuum portion of it all. The only real problem most times is digging through all the trim and other parts just to repair or replace a line etc.