Should Hub and Axles Spin in 2WD

[Turbogoat324]

pretty easy.
if the truck is running and in 2wd vacuum is applied.
in 4wd, no vaccum.

if it's off then theres no vaccum applied.

if it's working halfway, the grinding will be obvious.
If it's not at all, you will obviously be in 4wd when you set it for 2wd

Well I dont hear grinding but dont really feel vacuum when the hose is removed but seems like its in 2wd while im driving so most likely theres no issues. I'm probably just over thinking it

 

[FordTechOne]

I have a 2017. But I should feel a decently strong vacuum when removing the IWE line correct? Or is it pretty weak?

You can't go by "feel", you need a vacuum gauge. The spec for vacuum at each IWE line is a minimum of 10 in-Hg.

 

[txgunsntrucks]

Well I dont hear grinding but dont really feel vacuum when the hose is removed but seems like its in 2wd while im driving so most likely theres no issues. I'm probably just over thinking it

you probably are.

another easy test. drive it in 2wd and 4wd. feel a difference in how it drives.

like dude said. you can't tell with just your finger on the end of the hose

you pretty much know when it's in a mode that it should not be in. and the chance
of a total vacuum failure is slim. typically it's partial and there is grinding.

if you want to be proactive. get these.

Part Number

Part Name

Price

Quantity

Total

FL3Z-3A788-B

Vacuum Hose

$15.05
Tax : Texas (7.44%)

1

$15.05

7L1Z-9H465-B

Solenoid

$23.95
Tax : Texas (7.44%)

1

$23.95