hey! Ok im brand new to this so have patience!! I bought an audi a4 2006 2.0tdi a few months back. Its the 140 bhp model. I always take care of any car I have and nothing is overlooked. Howver a big problem was encountered last week when the low oil pressure light came on. I immediately turned it off and it was towed to my local garage. Basically this is what has happened since then. The garage checked the pressure of the oil to make sure that it was not a faulty switch that had set it off. The switch was proven to be correct and there was no oil pressure of any sort reaching this location. When i started the car to allow him to carry out the test I noticed that the brake pedal was gone hard and hard to push. I found this strange as it was perfect before and there had not been any issue with the brakes. Upon the garage finding no evidence so far to what was wrong he went about removing the sump which resulted in the engine having to be lifted up to get room to get the sump out. When he opened the housing for the oil pump unit I will describe as best as i can what was going on. I suppose this is where I should have a pic at the ready!! The actual oil pump was in the top left corner of the assembly. This is connected to a small thin hexagonal pin that travels to the right that is connected into what I was describe as a balancer?? This is meshed that with gears below it which spins then in the opposite direction. I had heard that a common problem that would occur was that the pin would round out and stop the oil pump spinning. However the pin is in perfect condition. What happened is that the pin rounded out the hexaginal shaped recieved part in the balancer unit. I rang the main dealer who has said that you cannot buy this part seperate first of all, that it has been replaced with an entirely different oil pump component unit and this is a problem that occurs. Now firstly I am wondering if this is the case?? Surely there must be some company that manufactures the individual components that was the originals in this car??? I would have thought this to be the case??? The main dealer went on to say that the entire unit has been replaced with an updated version and also that it is reccomended that the sump be also changed to accomodate the new oil pump assembly although he also said he does not believe this t be necessary if not desired. The new unit that is sold in one piece as he said is about 1350 + vat (euros) so thats about 1500 euros. It seems very expensive to me that a small rounded out hole for the pin would necessitate the cost of buying an entire new unit.
Has anyone the answers to these questions . . . .
Firstly if the oil pressure was so low and it was started only to check the oil pressure in the garage is there a chance that the turbo might now be dameged and it will fail later. The low oil pressure light did not come on while the car was ticking over but did at a slightly higher rev . . . The pin was just starting to slip but is was well and truely bad at this stage . . .
If it helps the engine code is BRE.
Would the oil pump need to be changed at 80,000 miles as is on the car at the moment now that the assembly is out?? If so is there a recommended oil pump change interval for same?? I believe the price is around 180 euros.
The brake pedal going hard at the same time seemed very strange to me . . any suggestions??
Does anyone know where the balancer? connected to the pin to the pump can be sourced to replace the original on its own . . . i persume if i go to scrap yards i will have to buy the engine, take it out and apart and then see if the part i need is actually any good??
Any help would be so much appreciated, im outta my depth here and could do with some help. . . I believe at the min if i can sourced a new original replacement that all will be fine for the moment and this will get me back on the road.
Please read and comment . . . Thanks, Noel
07-19-2011, 06:45 PM
2006 Audi a4 2.0tdi oil pump problem
The brakes only went hard when the low oil pressure light came on . . 
Linear Mode
