Vacuum tank chatter

[cjkjday]

I've got a 96 Hardbody 4-cylinder 4x4 and get a clicking chatter from the vacuum tank when turning on the ignition and when turning off. No issues for start-up and running... but annoying. Any adjustments I can make? Thought about replacing the tank...but not sure if it will fix it!? Any recommendations? Thanks.

[Rev_D21]

My '96 used to do that too. I don't think mine was the vacuum tank though, I think it was a relay. Perhaps the fuel pump relay? Happened every time I'd cycle the key to start or shut it off. I never chased the noise because it was my winter beater so I was happy just as long as it started, it could make as many noises as it wanted.

[cjkjday]

Yeah... doesn't bother me either, at least not directly (my daughter's truck)! Until she asks me to fix it.
Fuel pump relay makes sense based on symptoms. I'll check that out. Thanks!