Hello everyone. I'm new to jaguars. I bought myself a 1998 Xj8 and I'm really happy with it. I'm finally having some trouble with it. I purchased her this summer.

My serpentine belt tore a bit along the edges and came off. I then just replaced it thinking it was just old or something. Turned the car on and it ran perfectly for about a day. Then on my way to work it slipped off again. It didn't break or tear, it just slipped off.

Put it into the garage and started to diagnose the problem. Rerouted the belt again, started the car and it slipped off again (right by the idler) and the new belt tore just like the old one. Figured it was a bad tensioner because the belt wasn't as tight as i though it should be. I bought that, and i also went ahead and bought a new idler pulley because that is where it kept slipping off.

Once i had all my new parts we rerouted the new belt. I turned the engine just by flicking the key a little so it wouldn't fully start because i didn't want to risk breaking another belt. My pops was watching the belt while i was turning the key and he could tell the belt started to slip in the same place, right by the idler pulley.

Stopped to make sure everything was routed correctly, which it was. We were also able to move the belt back into position by hand as if the belt wasn't tight enough. We are sure it is the correct belt. The tensioner and the pulleys are also the proper parts, so I'm ruling that out.

We stopped there so we could do some more research on how to try to fix the problem. Could I please get some information for someone if they've had this same problem in the past?

 

Welcome! Sounds like something is mis-aligned. Check the component pulley that the belt runs right before it gets to the idler.

 

that would be the alternator. Ill have to give that a look when i get back out there tomorrow afternoon, THanks!

 

Welcome to the forum gogurt92,

Good to have you with us at Jaguar forums.

There's only 3 things can go wrong with the Serpentine Belt:
1. wrong belt
2. routed wrongly
3. damaged pulley or tensioner



(click on the image to enlarge it)

You should not be able to move the belt by hand because there is a lot of tension on it.

Follow this link XJ ( X308 ) XJ8 / XJR - Jaguar Forums - Jaguar Enthusiasts Forum to the X308 forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for info on regular issues.

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Enjoy the forums.

Graham

 

Welcome to Jaguar Forums gogurt92,

Good to have you with us.
Enjoy the forum.

If you haven't done so already you should add your car details to your signature to help others to help you.
If you need help with getting around and using the forum follow this link for some help Forum Help

 

welcome and enjoy the board

 

welcome to the forum - there is plenty of info and support here simply follow the links Graham has provided - enjoy

 

Hi and welcome aboard, its good to have you here with us here at Jaguarforums

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does anyone know the part number for the serpentine belt for the 98 xj8 base model. Auto zone gave me the belt with the number 7pk2325 and its been slipping off. I compared it with the old belt and its longer.. the old belt number says 7pk2327put the old belt back on the has some chunks taken out of it and sure enough it didnt slip off. Can anyone verify that the oem part number is 7pk2327?

 

NCA2211DA


See link below:


www.sngbarratt.com/CatalogueProducts.aspx?m=43&c=3197&s=12291&a=12290