02 115bhp Tdi Flat Acceleration

[justin36]

Hi I'm hoping someone out there can help me. I've got a 02 tdi 115bhp when I accelertate the car is very hesitant until I get to the point where the turbo kicks in then it will push you back in my seat. It feels very frustating to drive not at all very smooth. It feels very flat I should be able to cruise around in 4th doing 30 mph but it won't drive in that gear at that speed. Any one experienced the same problems or any idea what it could be?

[big_kev]

Sounds like the MAF is either disconnected or faulty.

[tim-spam]

Unlikely to be the MAF.

 

If it accelerates well at higher revs, but not at low revs, the turbo vanes are either sticking closed, or you have a vacuum leak somewhere.

Edited February 25, 2010 by tim-spam

[justin36]

Unlikely to be the MAF.

 

If it accelerates well at higher revs, but not at low revs, the turbo vanes are either sticking closed, or you have a vacuum leak somewhere.

 

 

Many thanks I had the turbo vanes checked last week, and was ok, I've been advised that it could be the cam belt timing not quite rite does this ring a bell to anyone?

[ncb]

You need to take of and clean the air intake and inside of egr (same job really). I had the same problem but mine was so gunged up that I could barely feel the turbi kick in and taking off in first gear up a hill was a joke. Now that is all restored after the much needed clean that every tdi needs at 100k at most.

 

I am surprised that not many people have done it or even suggested it on this forum but its a must on just about every other tdi forum whether you have problems or not.

After the clean , you might want to think about disconnecting the egr valve and/or modifing the CCV (crank case ventilation) so that oil doesnt enter your air intake in the first place.

Edited March 15, 2010 by ncb

[Stoneblade]

Hi I'm hoping someone out there can help me. I've got a 02 tdi 115bhp when I accelertate the car is very hesitant until I get to the point where the turbo kicks in then it will push you back in my seat.

 

Its sounding like air ingress into the system, mine had it last week, I couldnt get any power between 1000rpm and 2k until turbo kicked in and then would shoot away. I would have a look at the fuel lines, or get a bit of clear pipe and run it between filter and pump so that you can see if any airbubbles getting in.

 

Get yourself a Vagcom lead and check for any errors on your ECU, mine started kicking out a valve pump error, been bugging me for ages. I found it to be a small pin hole in the line between the filter and pump as the hot pipe above it melted into it.

 

Hope that helps

Rob

[justin36]

You need to take of and clean the air intake and inside of egr (same job really). I had the same problem but mine was so gunged up that I could barely feel the turbi kick in and taking off in first gear up a hill was a joke. Now that is all restored after the much needed clean that every tdi needs at 100k at most.

 

I am surprised that not many people have done it or even suggested it on this forum but its a must on just about every other tdi forum whether you have problems or not.

After the clean , you might want to think about disconnecting the egr valve and/or modifing the CCV (crank case ventilation) so that oil doesnt enter your air intake in the first place.

 

Many thanks for your advice will have a look

[justin36]

Hi I'm hoping someone out there can help me. I've got a 02 tdi 115bhp when I accelertate the car is very hesitant until I get to the point where the turbo kicks in then it will push you back in my seat.

 

Its sounding like air ingress into the system, mine had it last week, I couldnt get any power between 1000rpm and 2k until turbo kicked in and then would shoot away. I would have a look at the fuel lines, or get a bit of clear pipe and run it between filter and pump so that you can see if any airbubbles getting in.

 

Get yourself a Vagcom lead and check for any errors on your ECU, mine started kicking out a valve pump error, been bugging me for ages. I found it to be a small pin hole in the line between the filter and pump as the hot pipe above it melted into it.

 

Hope that helps

Rob

 

Many thanks for your advice