Newb needs advice 1989 grand marquis serpentine belt

[georgeposh]

I just replaced the starter, alternator and belt on my 1989 Grand Marquis. Now at start, then when accelerating for the first minute or so there is a squeaking noise. Is something breaking in or is something else wrong?

[mcninetyone]

The problem is that you left the belt loose. You need to go back and tighten that alt belt again.

[georgeposh]

OK thanks.