Losing power in hills ?

[Retired John]

We have just begun to lose power when on hilly roads basically hills we have normally gone up in 4th now back in 1-2 seems as soon as the incline begins the rpm drops and no grunt at all wondering if it could be a turbocharger stiffed ? Even on the flat power is right down 2.4 TDDI

[amlav]

It sounds like a turbo charger issue . Have a look at the turbo actuator travel if smooth .
Usually if turbo not working properly you don't get much power over 1800-2000 rpm.
Also check the turbo hoses if not split (that can also affect the boost pressure).
Other things would be a dirty MAF sensor . Restricted air flow .....that's about all I can think of for now .

[Retired John]

Thanks that gives me some points to check , it goes reasonably on the flat but the first rise in the elevation and it is all over

[Retired John]

Today on the ascent of Mt Kosiosco it really struggled and the glow plug light started flashing , I don’t have any manuals with me so ata loser the glow plug light , it went out after the ignition was switched off and back on . The climb up the Alpine way was a tough slog with the lack of power many hills were first and second gear but it is a 2300m high range

[knobby1]

Today on the ascent of Mt Kosiosco it really struggled and the glow plug light started flashing , I don’t have any manuals with me so ata loser the glow plug light , it went out after the ignition was switched off and back on . The climb up the Alpine way was a tough slog with the lack of power many hills were first and second gear but it is a 2300m high range

Glow plug light doubles as a DTC light, you'll need to get the codes read to determine what the light is for...you can also read the "light flashes" which will give a vague code.

With the loss of power, I'd suspect the timing solenoid was not well. Does it sound like a bucket of bolts when the power is lost..??

Lord Knobrot

[Retired John]

No knobby it is running sweet apart from being down on power esp in hills maintaining 5th is near impossible even on the flat 4th is better strange thing Is fuel consumption is pretty normal, to me it feels like fuel starvation or lack of turbo It was worse a couple of weeks ago which I put down to crook fuel and came sort of good after a couple of fills

[knobby1]

No knobby it is running sweet apart from being down on power esp in hills maintaining 5th is near impossible even on the flat 4th is better strange thing Is fuel consumption is pretty normal, to me it feels like fuel starvation or lack of turbo It was worse a couple of weeks ago which I put down to crook fuel and came sort of good after a couple of fills

As "Amlav" said, it may just be as simple as a sticky turbo actuator.

You don't have a turbo boost guage do you..?? These make diagnosing turbo issues easy. Forscan can do "live data" to show what's going on boost wise.

Lord Knobrot

[Retired John]

It will have to wait til I get home M’lord btw is there a easy way to check the actuater ? I have SFA tools with me atm which doesn’t help . Apart from the lack of grunt all seems fine it revs out to 4500 with ease but no grunt just noise ? But like driving an old beetle lower gears just make more noise lol

[Punto443]

I'd suspect a boost issue, my be worth a quick check of the hoses, DTC may well be boost under pressure, and more than likely a sticky actuator.

[Retired John]

No knobby it is running sweet apart from being down on power esp in hills maintaining 5th is near impossible even on the flat 4th is better strange thing Is fuel consumption is pretty normal, to me it feels like fuel starvation or lack of turbo It was worse a couple of weeks ago which I put down to crook fuel and came sort of good after a couple of fills

As "Amlav" said, it may just be as simple as a sticky turbo actuator.

You don't have a turbo boost guage do you..?? These make diagnosing turbo issues easy. Forscan can do "live data" to show what's going on boost wise.

Lord Knobrot

Ok Knobby I have got a boost gauge to fit any ideas what the boost "should" be please ? It has been running sweeter with every fill so maaaaybe just bad fuel but It must be more you would think ?

[knobby1]

No knobby it is running sweet apart from being down on power esp in hills maintaining 5th is near impossible even on the flat 4th is better strange thing Is fuel consumption is pretty normal, to me it feels like fuel starvation or lack of turbo It was worse a couple of weeks ago which I put down to crook fuel and came sort of good after a couple of fills

As "Amlav" said, it may just be as simple as a sticky turbo actuator.

You don't have a turbo boost guage do you..?? These make diagnosing turbo issues easy. Forscan can do "live data" to show what's going on boost wise.

Lord Knobrot

Ok Knobby I have got a boost gauge to fit any ideas what the boost "should" be please ? It has been running sweeter with every fill so maaaaybe just bad fuel but It must be more you would think ?

Max boost pressure should be in the 15-17psi region on the Mk6.

My Mk7 140 is ~23psi.

Lord Knobrot

[Viperoverg]

What's the service history, maybe a blocked air or fuel filter perhaps, sometimes even a bad batch of diesel gives the same symptoms.
Some of the fun I have galavanting over Africa in a mk6

[Burn2]

Max boost pressure should be in the 15-17psi region on the Mk6.

My Mk7 140 is ~23psi.

Lord Knobrot

Hello, are you sure about the 23 psi for a 2.4 TDCI 140 (so that's 1.56 bar) max?
I got "only" 1.36 bar (or something like that if i am not wrong) on my 2.4 tdci 140.
Or are you talking about the 2.2 tdci 140?


EDIT:
i see that in other post:

Yeah....have a manifold boost gauge on my Mk7 2.4 140ps, has been remapped to ~170ps though...max is 22psig, (~1.5bar) under full load & full throttle. The 140ps engines have the electronically controlled variable vane turbos though.
Lord Knobrot

So if i am not wrong you have got 1.56bar with the remap at 170, so 1.36bar at default (140cv) should be correct.

[knobby1]

Max boost pressure should be in the 15-17psi region on the Mk6.

My Mk7 140 is ~23psi.

Lord Knobrot

Hello, are you sure about the 23 psi for a 2.4 TDCI 140 (so that's 1.56 bar) max?
I got "only" 1.36 bar (or something like that if i am not wrong) on my 2.4 tdci 140.
Or are you talking about the 2.2 tdci 140?


EDIT:
i see that in other post:

Yeah....have a manifold boost gauge on my Mk7 2.4 140ps, has been remapped to ~170ps though...max is 22psig, (~1.5bar) under full load & full throttle. The 140ps engines have the electronically controlled variable vane turbos though.
Lord Knobrot

So if i am not wrong you have got 1.56bar with the remap at 170, so 1.36bar at default (140cv) should be correct.

Yes, that would be pretty close....mine has been remapped....which gives a little more max pressure....but unless you're on full boost all the time it's hardly noticeable....+/- 1or 2 psi could just come down to turbo efficiencey and boost guage differences, no two turbos or boost guages are exactly the same....my boost guage reads slightly differently to the numbers my MAP sensor reads when using live data on Forscan....not a lot but different nonetheless.

Lord Knobrot

[Burn2]

1.36 bar was mesure with map sensor on odb for mine 2.4 tdci 140.
It's to be sure that it's the correct value.