35thAnvMustang

my serpintine belt is going bad on my 99 mustang gt. can anyone tell me how i could go about to fix that? thank you

TheMustang

I use a breaker bar to loosen up the tensioner and take the belt off the alternator. Make sure you re-route it correctly and you'll be fine. The tensioner is on the left side of the motor towards the top. Theres a square hole and put the bar in there and push down.

Capt Hair

its very easy, just losen up the tensioner, and take the belt off, and then put the new one on.

Its a good idea to make a little diagram of the pulleys and belt especially if you've never done it before, just incase you forget how the belt loops around.

35thAnvMustang

ok thank you very much that seems pretty easy

ChalknCover

If it is your first time, it also wouldn't hurt to have someone hold the breaker bar on the tensioner, that way you have both hands to work with. You need to make sure the belt seats completely on each pulley before you start the car, this can be done by visual inspection and feel.

Jazzer The Cat

There should be a diagram on the guard above the radiator as well.

I recommend you keep the old belt wrapped up nice and clean and keep it in the trunk/spare tire well. I have ALWAYS done this and nice way to keep you from getting stranded out somewhere. If the current belt eventually breaks, freys or something, you can pull over and just quickly install the old spare one. Next town you hit, pick up a brand-new one and put the old one back in the trunk. This has not yet ever happened to me, but would be a MAJOR bummer to need a tow because of a belt you threw away when you replaced it last time.

Jazzer

ChalknCover

That is pretty good advice. I have a new one in my trunk, but I like that idea too.

antiv6

ya its simple, putting a tight belt on my car with just a 1/4 socket wrench sucked by myself. A stock sized belt should be a breeze

WhiteFoxGT

Cake work man.

Everyone here has you covered, but Im going to tell you how anyway.

You will need a good sized 3/8s head ratchet or breaker bar. DO NOT loosen the tensioner bolt. Push the tensioner back, slide the belt off the alternator, and let the tensioner go. Get the belt off from around the pullies. Re-route new belt around everything loosely except for the alternator. Push the tensioner back and lastly slide the top of the belt onto the alt pulley.

72MachOne99GT

If done incorrectly you can break the timing chain cover.

For the love of god, please don't ask me how I know this :-(