Noise at idle after cam belt change on xantia diesel??

falling-out-with-my-car · Post by **falling-out-with-my-car** » 19 Jan 2010, 13:22

Hi,

does anybody have any idea as to what could be causing a rattle around a newly fitted cambelt when the 1.9TD engine is at idle?

when I start the engine from cold there is no noise at all the noise gradually builds as the engine warms up.

I have checked the newly replaced serpentine belt for tension and all seems ok.

I have listened with a stick to all of the bearings accessable i.e compressor, LHM pump, alternator and camshaft and again no unusual noises there, when the ngine is warmed up and I'm sitting in the drivers seat the rattle becomes vibration which is felt through the whole car, openning the throttle stops the vibration completely, it is almost as though the exhaust is hitting the bodywork, I have looked underneath with a torch and checked the exhaust which is not loose or hitting the bodywork.

has anyone changed a cambelt on a Mk2 xantia diesel and experienced anything like this please?

(edit) all the serpentine belt pulleys were replaced about 12 months ago.
regards Nigel.

HDI · Post by **HDI** » 19 Jan 2010, 13:35

Top engine mount ?

lurchy666 · Post by **lurchy666** » 19 Jan 2010, 14:57

had exactly the same noise on mine kinda a vibratey metal noise at idle but as soon as revs applyed sorted, mine was a mk1 facelift tho

ended up on mine being the tail pipe hitting the bodywork i bent the bracket holding the tail pipe and it was fine after, could also be the top engine mount laying the engine back to make the pipe hit the bodywork

citroenxm · Post by **citroenxm** » 19 Jan 2010, 15:06

A Commoon rattle effect is the Auto tensioner letting go and getting weak, ONLY detectable when the engine IS RUNNING!

As things warm up they get easyer to move, the Auxbelt MAY give a little, letting the tension go a bit.

Watch the Aux belt when the engine IS WARM, and see what its dooing, my guess is, that it is FLAPPING about between the Crank and Air con compressor.. EVEN if tension seems correct!

Thats my bet anyway.

Paul

Post by **Peter.N.** » 19 Jan 2010, 18:02

Is the crankshaft pulley done up tight?

citroenxm · Post by **citroenxm** » 19 Jan 2010, 18:04

I also forgot to ask, being a Series 2 Xantia, it can be either XUD or HDi, which engine do you have?

If its a HDi it can also be the bottom pully on the crankshaft, the outer parting company with the inner..

Paul

Xantidote · Post by **Xantidote** » 19 Jan 2010, 22:00

I had a rattley auxillary belt after renewing it and being unable to just reset the manual adjuster to it's old position. Tweeked the adjuster a little and noise reduced. Tweeked it a little more, and noise disappeared, so I'd go for Paul's suggestion to look at the auto-tensioner first.

falling-out-with-my-car · Post by **falling-out-with-my-car** » 20 Jan 2010, 01:31

citroenxm wrote:I also forgot to ask, being a Series 2 Xantia, it can be either XUD or HDi, which engine do you have?

If its a HDi it can also be the bottom pully on the crankshaft, the outer parting company with the inner..

Paul

Paul its an XUD engine not an HDi.

cheers Nigel

falling-out-with-my-car · Post by **falling-out-with-my-car** » 20 Jan 2010, 01:36

Xantidote wrote:I had a rattley auxillary belt after renewing it and being unable to just reset the manual adjuster to it's old position. Tweeked the adjuster a little and noise reduced. Tweeked it a little more, and noise disappeared, so I'd go for Paul's suggestion to look at the auto-tensioner first.

I guess you mean the serpentine belt not the cam belt?

I did wonder if this might need readjusting, I am sure I read somewhere that you need to go back and retension the serpentine/aux belt after initial replacement.
at first it was fine from brand new after having done a couple of hundred miles this rattle has appeared at idle.

thank you everyone for your input I have something to print off now as suggestions to take back to the garge where the work was done.

cheers Nigel.

citroenxm · Post by **citroenxm** » 20 Jan 2010, 07:51

falling-out-with-my-car wrote:
citroenxm wrote:I also forgot to ask, being a Series 2 Xantia, it can be either XUD or HDi, which engine do you have?

If its a HDi it can also be the bottom pully on the crankshaft, the outer parting company with the inner..

Paul
Paul its an XUD engine not an HDi.

cheers Nigel

Right, I hedge my bets on a flappy Aux belt then.. you can easyilly check this your self, with the engine running, watch the belt and see if you can soo it flapping.. these ridge belts shouldn't have any flap in them and should be taught all the way round.. but not over tight either.

Paul

citronut · Post by **citronut** » 20 Jan 2010, 08:13

i have seen the auto tentioner clattering against the cam belt cover before, this give a sound like somethimg clattering against a plastic box, i found it to be if the aux drive belt is over tightend,

im not sure if this is on,after or durin warm up,

regards malcolm