I'm getting a marked loss of power in my W reg Bora 110tdi (not PD). I had a timing belt (50k) a little while ago, but I think it's unrelated as I was already experiencing this. On the flat the car seems ok, and it's really only when the car's under pressure under hard acceleration especially going up steepish hills. The car's fine until about 2500rpm, at which point the power just seems to die. It's as though someone's turned off the fuel supply. The fuel economy is unaffected. A 400 mile trip along the south coast last week still returned well over 50 mpg and I don't generally hang about. The turbo whine still sounds the same. Any thoughts anyone? Turbo hose? Fuel filter? (I use Jet or Tesco fuel)
By the way, if you haven't yet tried toothpaste to clean windscreens and wipers - do so now.
|
|
The Mass Air Flow meter is usually fingered first. I lurk on lots of VW forums and that is usually the culprit in low power situations.
|
|
|
The 110 bhp engine uses a variable vane turbo. The regulating mechanism for the vanes gets stuck with exhaust carbon particles.
This link shows what happens. snipurl.com/dpoz
If you pull off the vacuum hose from the vacuum canister on the turbo with the engine running, watch the connecting rod to the turbo. If it doesn't move by 15mm or more it's stuck. I did take my sons turbo apart & clean out the soot which restored normal power, but after 2-3k miles the problem returned. So I think the turbo needs renewing. Hope this helps.
|
|
|
I'm getting a marked loss of power in my W reg Bora 110tdi (not PD).
Hi i have an Octavia with the same engine, although double the mileage. It has been down on power for about six months now, it's been serviced and had a new cambelt (the latter only because the tensioner sheared off). I have the same symptoms as you, and it is driving me potty! My next step is get the car plugged into a diagnostics kit to see if there are any fault codes.
Do a forum search on other VW, Seats and Galaxys which all have the same engine. there is a thread concerning an Audi A4 which is worth a read from memory.
|
I'm surprised not to see more replies to this; probally because people are bored saying it time after time!!
Same thing with our W reg Seat 110 TDI. It was the MAF sensor as many would have suggested. To test it, drive the car with it unplugged, if no difference I believe thats the way of determining the prob. Buy a new one and fit.
I think VW are doing a deal on these.Actually, I got ours from german and swedish on exchange basis, cost about £75 which is cheap.
Regards the turbo on ours, I was told by others including Turbo Technics that this turbo is not extensively repairable and not available in reconditioned form. New only price about £1000!!!!!!
|
|
|
|
|
I had similiar symptoms with Passat TDI 90 but my problem turned out to be the catalyst breaking down - worth checking if the MAF is not at fault.
|
This is what HJ put in his CBCB entry for cars with this engine:
"Power loss on TDI 90s and 110s over 3,000rpm can be cured by replacing a thin hose that runs from the exhaust, near the turbo, to the ECU".
No idea from personal experience if this is effective, but the MAF is a common problem on these engined cars.
|
|
|
|
Thanks for all your replies. I've had my local Skoda garage (cheaper for servicing than VW) plug in their kit and the MAF meter is the culprit, so they tell me. I shall know for certain when they've replaced it next week. I'm releived it's not the turbo.
Is the VW turbo of the type that HJ would recommend leaving running to cool down? And does anyone out there give give their TDI an occasional five mile blast at high revs as I seem to recall HJ suggesting? I spend most of my driving time at about 2000 to 2500rpm
|
Yes on both counts - have the same engine in my Leon and will red line it 2 times a week at least when the engine is fully warm, and go through the gears like a petrol engine every other trip.
Aim is to keep the breathing of the engine clear and reduce the smoke/soot during normal driving.
Steve
|
PS - forgot to say that idling after a hot motorway drive for a minute or so is a good idea also - eg when at a service area.
Steve
|
|
|
|
|
Thanks for all your replies to this. New MAF sensor now in place. I think I must've been living with a worsening situation for some time, since the effect is quite dramatic.
|
|
|
