Air pump issue
02-27-2018, 03:30 PM
#1
Newbie
Thread Starter
Air pump issue
I change my air pump in my w140 320 1998 Benz after that it wasn’t work. I buy new one and adjust it. After the installation the air pump sound that it works but it will not open the doors. What should I do?
02-27-2018, 03:54 PM
#2
Super Member
You need to test the lines between the pump and the door locks. Figure out which line to disconnect, apply vacuum or a small amount of pressure to the lines and see if the locks work. You can also remove the inner door panels, disconnect the vacuum lines at the door locks and test the integrity of the lines with the same tests, or a smoke tester. On these older cars it is very possible for the vacuum lines to break near the door hinges (where the wiring passes through). If everything checks out, you need to start replacing door locks.
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Oren’s (02-28-2018)
