T5 Beach 2015 2.0 84KW TDI engine. Runs rough Rattle and vibration on idle 800rpm.. Any ideas on what could be the problem

[Robert Morley]

T5 Beach 2015 2.0 84KW TDI engine. Runs rough Rattle and vibration on idle 800rpm.. Any ideas on what could be the problem

 

[sidepod]

From that description………literally anything!!

 

[sidepod]

I’m going with failed dual mass flywheel.

 

[Lambeth Cali]

Rougher than normal? You had the van a long time? I think my (different) engine runs great normally but at idle I wouldn’t say it was smooth at all. It is 0c outside….

 

[sidepod]

Is it a constant engine speed related rattle or a random unrelated rattle?

Metallic rattle?

Does it clear when you rev the engine or get worse?

Throw us some rope here FFS.

 

[flying banana]

many things. bad fuel. air in fuel. clogged fuel or air filter. flywheel. fuel pump. fuel leak or air in fuel line ? try new filters and some injector cleaner in a full tank of super diesel. any lights on the dash ?

 

[Robert Morley]

Is it a constant engine speed related rattle or a random unrelated rattle?

Metallic rattle?

Does it clear when you rev the engine or get worse?

Throw us some rope here FFS.

Hi just noisy on tickover and a bit of a metallic rattle sometimes dissapears over 1000

 

[WelshGas]

Hi just noisy on tickover and a bit of a metallic rattle sometimes dissapears over 1000

Manual or DSG?
Milage?

 

[Robert Morley]

Rougher than normal? You had the van a long time? I think my (different) engine runs great normally but at idle I wouldn’t say it was smooth at all. It is 0c outside….

ive had the van 4 years engine noise is new its parked up outside

 

[Robert Morley]

Manual or DSG?
Milage?

manual 52000 miles

 

[Robert Morley]

many things. bad fuel. air in fuel. clogged fuel or air filter. flywheel. fuel pump. fuel leak or air in fuel line ? try new filters and some injector cleaner in a full tank of super diesel. any lights on the dash ?

no lights on dash

 

[sidepod]

Blood from a stone this…..

 

[flying banana]

not sure theres anything wrong here. started my car earlier all frozen over. that ran rough too for a 2nd or 2 then settled

 

[Hawthorn37]

I’d take it for a run and get it up to full running temperature, then listen to it on tick over. Most diesels run a bit rougher when really cold.

 

[Drpps]

Does it disappear if you put your foot on the clutch? could be gearbox/clutch rattle.
might be bad fuel.
at this time of year when you start up the Aux fuel heater kicks in, and the heated mirrors/screen/blower/lights puts quite a strain on tickover due to alternator load.

 

[seasiders1]

My 2.5 130 T5 sometimes has a rough idle at 800rpm, I’m told it’s the particulate filter regen….goes away after a short while..

 

[Perfectos]

Hi just noisy on tickover and a bit of a metallic rattle sometimes dissapears over 1000

The idler pulley can be noisy ?
idler pulley when worn can make quite a lot of noise when stationary on tick over, (rattle and sometimes a squeak )

edit: open the bonnet and see if you can hear the noise on the left hand side of the engine (left side when facing the front of the van)

 

[Andy California]

My engine was vibrating at idle and sounded noisey in the cab. It was the serpentine belt vibrating due to a seized one way clutch on the alternator pulley. Changed the pulley and runs a lot quieter now. I found a YouTube video which explains the fault well. See the link below.

 

[Robert Morley]

My engine was vibrating at idle and sounded noisey in the cab. It was the serpentine belt vibrating due to a seized one way clutch on the alternator pulley. Changed the pulley and runs a lot quieter now. I found a YouTube video which explains the fault well. See the link below.

hi i have checked and its the over run alternator pulley that has seized can it be changed iin situ or did have to take the alternator off

 

[Andy California]

hi i have checked and its the over run alternator pulley that has seized can it be changed iin situ or did have to take the alternator off

The alternator stays on the engine but you will need to remove the engine mounting and jack the engine up slightly to get the tool into the pulley. It was tight to come off but I used a heat gun to warm the pulley which made it a lot easier. I got the removal tool on eBay for £7.00 got the pulley on Autodoc for around £30 inc postage

 

[Robert Morley]

The alternator stays on the engine but you will need to remove the engine mounting and jack the engine up slightly to get the tool into the pulley. It was tight to come off but I used a heat gun to warm the pulley which made it a lot easier. I got the removal tool on eBay for £7.00 got the pulley on Autodoc for around £30 inc postage

Thanks Andy for info your reply.

 

[pjm-84]

Had this on an Audi - Pully turned out to be siezed so Audi put on a new alternator at the cost of £530 (didnt tell me). VAG offered a £100 goodwill jesture to try and ease the issue as the car was just outside warranty. Only every owned 1 Audi and this was 16 years ago so relatively pricy

 

[Ozzy Pete]

It could possibly be the harmonic balancer. It happened on my Mini Cooper D and I had no idea it had failed until I took it in to the mini main dealer for diagnosis. Luckily I took out a mini warranty and it only cost us £100 otherwise it would have been over £500.
It was making a horrible rattle at certain revs then went smooth.

 

[Robert Morley]

Thanks Andy for info your reply.

Hello Andy going to have a go to fit new overrun pulley another question did you remove air filter unit

Thanks Andy for info your reply.

Thanks Andy for info your reply.

Hello Andy going to have a go at fitting new overrun pully Did you manage without or did you have to remove air filter unit .