Does anyone know if a Diesel Turbo works with the same principle as a Petrol turbo? If so what would cause the turbo on my Volkswagon Transporter TDi to kick in at 3000 revs. Its just been in for a service and now it is so sluggish until just a tad under 3000 revs then it kicks in and is OK. I am only presuming that its the Turbo?

 

thanks

 

vini

Sounds like a typical TDi to me. Only get power from the turbo between about 2,500 and 3,000 rpm.

Sounds like a typical TDi to me. Only get power from the turbo between about 2,500 and 3,000 rpm.

 

When I took it in to the depot it wasnt like it. It ran fine. But since I picked it up its so slow and sluggish. I could just take the fookin thing in but its in London and thats not on seeing as I have got to go down that way to work later tonight. I just thought I might be able to fix it myself?

check the vacumn pipe from the pump to the turbo !

Maybe it needs a remap (ECU reset). Just mention it to VW. Might have picked up some dodgy fuel with an off-spec flashpoint. What year is it? They should be able to plug it into their computers and download any updated fuel mappings they might have.

 

I know that was the case with my MK5 Astra CDTi that I used to have.

I will have a look under the bonnet and check the pipes. Thanks Paul.

The van is an 03 Si but its done just over 160.000 miles now. The fuel was the fuel that was in it before I took it in. It had half a tank left. It might be worth knockin g the battery off for half an hour I spose. Didnt think of that TBH. Thanks.

I will have a look under the bonnet and check the pipes. Thanks Paul.

The van is an 03 Si but its done just over 160.000 miles now. The fuel was the fuel that was in it before I took it in. It had half a tank left. It might be worth knockin g the battery off for half an hour I spose. Didnt think of that TBH. Thanks.

 

 

What did it go in for ?

What did it go in for ?

 

It all started when the heater got stuck on hot and it started to cook me whilst driving along with a slight water and oil leak. That was closely fllowed by the 160.000 mile service that was due and the M.O.T. it was running fine. Its the 2.3 TDi so it has got plenty of power under normal circumstances. They have fitted 3 new tyres too. But nothing was wrong with the performance.

did they change the diesel fuel filter? if so is it a self priming pump? They could have changed it and not primed the pump properly causing you to have air in the fuel lines.