Block heater ?

[Elijah]

Is it supposed to make niose when pluged in?

[Hash_man_Se_i]

It should make a quiet noise... sometimes hard to hear... but shouldn't make a loud noise.

What's yours doing?

[Elijah]

It kinda sounds like when you drop some snow on hot header.

[Mike's89AccordLX]

Check your coolant level b/c maybe the heater isn't sealed completely and its boiling out some coolant.

Check that area when its plugged in. You might need a flash light and a mirror.

-Mike