4x4 disengaging slowly

[Matt 4.3 TBI]

I've noticed the past few times I've used 4-Hi it will stay engaged for quite a while after I shift it back to 2-Hi. Is this that damned vacuum actuator?
It engages right away, no delay at all. Just takes it sweet time switching back.

[nomaboy]

sounds like the vacuum actuator to me.
I know those trucks have problems with those things

[Matt 4.3 TBI]

I've always heard that the 4WD will engage slowly or not at all when it goes out, though. Just trying to make sure since it's not a $2 part...

[Sparky2263]

There is a vent cap that gets clogged. Looks like the vent cap on the rear-end. Usually mounted on the firewall. The vent exists for vacuum release.

[Matt 4.3 TBI]

So that's what that's for...I thought it was just a front diff vent. I'll have to clean that thing out and test it out.
Thanks for the heads-up