Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds and
low revs, in a faster situation its a different story. Even a slight hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the car
will never do more than 80 mph, and this is with my foot flat down.

Going up hills can be embarassing, particuarly if I don't approach them at
some speed.


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

Cheers,

Angus.




All the best,
Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga
Game reviews by Amiga players http://www.angusm.demon.co.uk/AGDB/AGDB.html

Angus Manwaring wrote:
Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds and
low revs, in a faster situation its a different story. Even a slight hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the car
will never do more than 80 mph, and this is with my foot flat down.


There is something wrong. The 90BHP is no ball of fire, but it should
exceed 100mph indicated without trouble.

Going up hills can be embarassing, particuarly if I don't approach them at
some speed.


I had a 90bhp TDI Ibiza a while ago. The only problem I had on hills was
catching a lot of the traffic up :-)


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.


Then there is a very good chance your MAF is knackered. The only true
test is to log it with VAG-COM, but what you've done is a good indicator.

If you want to chance it hey're about 80 quid, or were last time I
bought one, exchange from Euro or GSF. Get a genuine Bosch, not a cheapy
replacement. Very easy to fit (screwdriver, pliers, 10 minutes). First
check all the vacuum hoses from the bulkhead area.

"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM_. demon.co.uk...

Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

If your Golf was advertised as a 100 bhp car, then you have grounds for
complaint! If it was sold by a dealer then is actually illegal and you can
threaten to report them to Trading Standards.

This happened to me when the 6 month old Polo bought turned out to be a 55
bhp car rather than the 65 bhp car they had advertised and recorded on the
sales invoice. We made a fuss, returned it and got a brand new Polo for very
little extra!

CJJE

"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM_. demon.co.uk...

Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds and
low revs, in a faster situation its a different story. Even a slight hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the car
will never do more than 80 mph, and this is with my foot flat down.

Going up hills can be embarassing, particuarly if I don't approach them at
some speed.


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

I've got a full VAG-COM 504.1 & interface kit if you want me to scan it for
you. I'm in the SW (Wiltshire/Dorset and a bit of the Thames
Valley/M3/M4/M25 too quite often). Takes about 5 mins and I've got all the
gear in the van with me when I'm travelling.

JB

On 06-Feb-08 23:13:32, JB said
"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM_ .demon.co.uk...

Hi guys,

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

I've got a full VAG-COM 504.1 & interface kit if you want me to scan it for
you. I'm in the SW (Wiltshire/Dorset and a bit of the Thames
Valley/M3/M4/M25 too quite often). Takes about 5 mins and I've got all the
gear in the van with me when I'm travelling.

Hmmmm..... well coincidentally I work in Dorset and live in Wiltshire,
travelling to Blandford via the A350. Could we maybe work something out in
e-mail?

And thanks for the respnses.


All the best,
Angus Manwaring. (for e-mail remove ANTISPEM)

I need your memories for the Amiga Games Database: A collection of Amiga
Game reviews by Amiga players http://www.angusm.demon.co.uk/AGDB/AGDB.html

"Angus Manwaring" wrote in message
emon.co.uk...
On 06-Feb-08 23:13:32, JB said
"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM _.demon.co.uk...

Hi guys,

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

I've got a full VAG-COM 504.1 & interface kit if you want me to scan it
for
you. I'm in the SW (Wiltshire/Dorset and a bit of the Thames
Valley/M3/M4/M25 too quite often). Takes about 5 mins and I've got all the
gear in the van with me when I'm travelling.

Hmmmm..... well coincidentally I work in Dorset and live in Wiltshire,
travelling to Blandford via the A350. Could we maybe work something out in
e-mail?

And thanks for the respnses.


emailed

JB

JB wrote:
"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM_. demon.co.uk...
Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds and
low revs, in a faster situation its a different story. Even a slight hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the car
will never do more than 80 mph, and this is with my foot flat down.

Going up hills can be embarassing, particuarly if I don't approach them at
some speed.


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

I've got a full VAG-COM 504.1 & interface kit if you want me to scan it for
you. I'm in the SW (Wiltshire/Dorset and a bit of the Thames
Valley/M3/M4/M25 too quite often). Takes about 5 mins and I've got all the
gear in the van with me when I'm travelling.

JB


That's a very good idea, but be aware a faulty MAF doesn't always show
up as a recorded fault. Faulty EGR or low boost might though.

Can 5.04 do logging? If so, you need to log expected MAF output againt
actual while driving the car flat out- the values should be close
together- it's easiest if you graph them with excel.

Chris Bartram wrote:
Angus Manwaring wrote:
Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds and
low revs, in a faster situation its a different story. Even a slight hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the
car
will never do more than 80 mph, and this is with my foot flat down.


There is something wrong. The 90BHP is no ball of fire, but it should
exceed 100mph indicated without trouble.

Going up hills can be embarassing, particuarly if I don't approach
them at
some speed.


I had a 90bhp TDI Ibiza a while ago. The only problem I had on hills was
catching a lot of the traffic up :-)


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.


Then there is a very good chance your MAF is knackered. The only true
test is to log it with VAG-COM, but what you've done is a good indicator.

If you want to chance it hey're about 80 quid, or were last time I
bought one, exchange from Euro or GSF. Get a genuine Bosch, not a cheapy
replacement. Very easy to fit (screwdriver, pliers, 10 minutes). First
check all the vacuum hoses from the bulkhead area.
2 years ago MAF for 115hp was £75 exchange from VW dealer - fitting is a
5 min lunchtime job - screwdriver and pliers for the hose clips.
My symptoms were occasional hesitation in accelerating and slow to rev
above 3000 (no load).

"Chris Bartram" wrote in message
...
JB wrote:
"Angus Manwaring" wrote in message
news:1357.993T1215T10854458angus@angusm_ANTISPEM_. demon.co.uk...
Hi guys,

My new (to me) Golf TDI 90 bhp, that I was initially led to believe was
100 bhp, but isn't, seems to be pretty flat performance wise.

I'm not a boy-racer, and mostly drive in an economical manner, but does
the flollowing sound wrong to you?

Although the car is quite nippy (by my lowly standards) at low speeds
and
low revs, in a faster situation its a different story. Even a slight
hill
(at say 60 mph) seems to stop any speed increase dead.

On the few occasions I've tried on the flat, my impression is that the
car
will never do more than 80 mph, and this is with my foot flat down.

Going up hills can be embarassing, particuarly if I don't approach them
at
some speed.


I've had a bit of a google and people talk a lot about the MAF. I
disconnected the associated connector tonight, to see if I noticed any
improvement, and the result was maybe a tiny bit (if any) at low speed
but generally no real difference.

So I don't know - this is my first diesel, it does a good job of getting
me from A to B, but is something wrong here.

Appreciate any thoughts.

I've got a full VAG-COM 504.1 & interface kit if you want me to scan it
for you. I'm in the SW (Wiltshire/Dorset and a bit of the Thames
Valley/M3/M4/M25 too quite often). Takes about 5 mins and I've got all
the gear in the van with me when I'm travelling.

JB


That's a very good idea, but be aware a faulty MAF doesn't always show up
as a recorded fault. Faulty EGR or low boost might though.

Can 5.04 do logging? If so, you need to log expected MAF output againt
actual while driving the car flat out- the values should be close
together- it's easiest if you graph them with excel.

I've got the full version so I can log multiple parameters in realtime. I
had planned to log the MAF calculated/actual as you correctly say. It's the
only way I know to get a good feel for the MAF performance. I've got a few
stored scope traces (both known good & known faulty) of Bosch/Pierburg MAF
waveforms too so I may hook up the scope if VAG-COM doesn't show any
problems.

JB

JB wrote:


I've got the full version so I can log multiple parameters in realtime. I
had planned to log the MAF calculated/actual as you correctly say.

That's exactly how I diagnosed mine.