New Polo problems - Register

**Umai Naa!!** · 12-01-2013, 11:58 PM

Originally Posted by ATYPIC

This was already covered on the previous page

TSI doesn't stand for anything. It's just letters. All it does is differentiate between petrol and diesel.

We had this discussion at VW Technical training all the time!

**nomadx38** · 13-01-2013, 12:31 AM

I hate to disagree with a person who works for VW but I do find it hard to believe that the letters don't mean anything.

I can understand if they wanted to tell the difference between diesel and petrol through TSI and TDI but then you also have FSI (Fuel stratified injection, AKA Direct injection) which stated that it was a NON turbocharged engine which was commonly seen on the Golf MK5. You also have cars like the Trendline polo which has no such badge name, though been a petrol engine.

I would say if they have gone to the effort of making FSI have a meaning then TSI (turbocharged stratified injection?) and TDI (turbocharged diesel injection?) should have a meaning as well.

Ok I'll stop now

**kawabanga** · 13-01-2013, 12:55 AM

Nomad, you are right:

FSI: Fuel Stratified Injection
TSI: Turbo Stratified Injection
TDI: Turbo Diesel Injection

...and...

GTI: Gran Turismo Iniezione (even if some GTIs had a diesel engine, like Golf GTI mk4)
GTD: Gran Turismo Diesel

**Bel** · 13-01-2013, 02:20 AM

But there are (golf wise) three variations of the TSI badge......
Different colour letters mean different engine type (stock wheels are usually the give away to the engine type)....for instance a friend has a TSI that only have the RED T... so 90kw and non supercharged....mine on the otherhand has a RED TS... So 118kw super and turbocharged engine. I seriously think that the badge means not much as far as acronyms go.
Just me thoughts/knowledge, happy to be corrected.

**Lemonskin** · 13-01-2013, 11:25 AM

Originally Posted by nomadx38

Yeah I have this (had...?) this problem before and it has to do with the gearbox engaging, well in this case I would say dropping the clutch into the gear, sounding and feeling quite bad.

I just got my mechatronics unit and clutches replaced and its still a bit rough. It's a lot better than it was and I am seeing that more and more but it is still a bit rough going into second. I would say the clutches are still bedding in so I could blame it on that but really I think it is just "Normal" DSG behaviour.

If it started doing it every time you slowed and then accelerated (like mine used to) then I would get it looked at. Also if it struggles to go into a gear upon engaging for the first time that could also indicate a problem. Such as start to go up a hill in 6th, goes to shift up to 5th, engages the clutch and then let's off for a few milliseconds (long enough to really feel it) and then engage again.

Just wondering, when you go to take off, do you take your foot of the brake, let the clutch pick up some slack (just gripping) and then accelerate or do you just move from the brake to the accelerator within an instant?

Do you get it engaging rough going down slight hills where it just lurches into first gear?

Thanks for the advice mate. Usually I go straight for the accelerator but not hard, I rarely floor it off the line. When it clunked, I wasn't going hard.

It's never lurched into first gear when going downhill, it does downshift to slow me down but not into first!

If it makes another noise ill be sure to note the exact conditions. Really hoping it was a once off! :S

**nomadx38** · 13-01-2013, 12:14 PM

No i don't mean downshifting into first when you were previously moving, it will never do that unless you completely stop or go up an incline of more than 10% under 5 km/h.

No I meant when you are stopped at the lights on a hill facing down. Light goes green and you take your foot off the brake and the car starts to roll naturally. When you then accelerate it drops the clutch when engaging into first with a little bang (or not what you would call a smooth pickup). Have you experienced this?

**Umai Naa!!** · 13-01-2013, 12:55 PM

Originally Posted by nomadx38

I hate to disagree with a person who works for VW but I do find it hard to believe that the letters don't mean anything.

I can understand if they wanted to tell the difference between diesel and petrol through TSI and TDI but then you also have FSI (Fuel stratified injection, AKA Direct injection) which stated that it was a NON turbocharged engine which was commonly seen on the Golf MK5. You also have cars like the Trendline polo which has no such badge name, though been a petrol engine.

I would say if they have gone to the effort of making FSI have a meaning then TSI (turbocharged stratified injection?) and TDI (turbocharged diesel injection?) should have a meaning as well.

Ok I'll stop now

While it all fits nicey, their explaination is that the letters are just marketing. Nothing more. They don't even use FSI and TFSI anymore.

Oh, and "stratisfied" is a dirty word in the technical department!