My girl friend had her mechanic replace her serpentine belt on her 2001 jaguar S type 4.0 V6
And he said it broke the new belt and went into the timing chain. And this was after he replaced a pullet which the belt went around. Now he said she need a new engine. Is it even possible for that to happen without him doing something wrong.

 

Welcome to the forum marlow772,

I've moved your question from General Tech Help to S-Type forum. Members here with the same model will be able to help.

You will get advice and opinions on what can or cannot happen. What we will NOT do on the forum is to get involved in a dispute between a member and a repairer.

In situations like this, it's always the details that make the difference. Something must have happened to prompt replacement of the belt in the first instance. Several catastrophic things must then have happened to go from a simple belt replacement to the suggestion that a new engine is required.

Graham

 

It has to be said this is not the normal outcome for a belt replacement.
I would be interested to see if the idler pulley bolt was the correct length or cross threaded to cause this outcome,
before pointing fingers.
I would recommend getting the car out of there A.S.A.P.
Which would mean firstly paying the man. Then I'm sure the law will straighten things out.
If necessary. Good luck !

 

A delaminating crank damper will make short work of a new belt. It will also make a noise on cold-start that pre-loads one to replace the belt - why did she have the belt replaced? Preventative? (it was time) or was there belt noise she was trying to be rid of?

 

No IMHO. Time to call your lawyer.

 

The engine is either a 3.0 V6 or a 4.0 V8. The V8s have problems with chain tensioners but this would not be caused by the serpentine belt or pulleys. The chain and tensioners are internal to the engine whereas the belt is external..

Please provide some clarification.

 

Unless the above is garbled, TAKE ACTION. Maybe a lawyer, maybe get car out, etc. But do make sure the above isn't garbled.

 

i guess another drive by poster?

 

Maybe a walk by poster?

 

R o f l m a o

 

Let's at least explain this to the poster. The serpentine belt is on the outside of the engine, in front - it is driven by the engine's crankshaft so that it can drive the accessories (alternator, water pump, AC compressor). There are also some pulleys that guide the belt (presumably the mechanic replaced one of these "idler" pulleys). The timing chain is on the inside of the engine, at the front - also driven by the crankshaft, it drives the cam shafts to operate the valves. One is a belt, the other is a chain, and neither has anything to do with the other, nor can one possibly interact with the other. If the belt fails, the engine will still run, but it shouldn't be run for more than a minute or so, just long enough to safely get off the road. If the chain fails, the engine usually destroys itself in about a second because valves hit pistons, things break and the pieces chew up the cylinders. The chain apparently broke and she needs a new engine. But I don't see any way the belt could cause the chain to break, and I don't really see any way the pulley work could cause the chain to fail either (if so, it would fail when the car was started the first time after the work was done). If she drove the car away from where the work was done and the engine failed later, than I wouldn't think the mechanic is at fault. If the engine failed at the repair facility, then I'd say most likely the mechanic did something very wrong.

I realize we don't always have time to explain things this fully, but since I only post occasionally (and since it's an engine failure) I thought I'd give it a shot.

 

the OP has not been back to the site since his first and only post. I'll never understand why people sign up for a tech website, post a question, then disappear without an answer despite multiple offers of assistance.

 

There is an idler pulley (upper XR837675) that is mounted to the 4.0 V8 front timing cover. The mount bolt goes through the cover into the block but I don't see how that could damage the engine unless the cover broke??????????

bob

 

I have the 4.0 and changing that belt has NOTHING to do with the T chains. The belt is simple to install so I would pay the man and demand a new engine and let him tell his insurance company how a belt got inside the engine.