zsara picasso 2.0 hdi loss of power

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craig hudson
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zsara picasso 2.0 hdi loss of power

Post by craig hudson »

I have read with interest on several locations about this issue and seem to find the brake light switch as the fault. I have fixed/replaced it but still the same. The problem is a serious loss of power, I can hear the turbo spinning so that works. the car starts and idles perfect but when I drive it there is no power, a slight hill which I used to be able to pull and accelerate quickly on in 3 is now in 2nd with no increase in speed just foot to the floor. what is the cause of this, my engine light is on and it frequently drops in and out of limp home mode, usually when trying to overtake a lorry doing just 55 which can be scary as the oncoming cars in the lane don't expect me to be slowing down while overtaking!!!!it was serviced recently (about August time) and changed oil filter, oil and fuel filter.

I need help please.... :cry:
Northern_Mike

Re: Xsara picasso 2.0 hdi loss of power

Post by Northern_Mike »

craig hudson wrote:I have read with interest on several locations about this issue and seem to find the brake light switch as the fault. I have fixed/replaced it but still the same. The problem is a serious loss of power, I can hear the turbo spinning so that works.
How loud can you hear it? It hasn't got louder recently has it?
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kitchD6C
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Re: Xsara picasso 2.0 hdi loss of power

Post by kitchD6C »

Air flow meter. May not have failed completely, but if it goes out of range you struggle to climb above 65mph. I ran mine on the dyno last year when I suspected it wasn't running right.....55bhp! :lol:

£70 later and normal service was resumed. The brake light switch thing is nonsense.....if that fails it almost cuts power ENTIRELY!

EGR valve can cause it too, but they throw up the EML usually. The air flow meter didn't even show up on OBD though a Lexia would have noticed it I'm sure.
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Mandrake
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Re: Xsara picasso 2.0 hdi loss of power

Post by Mandrake »

kitchD6C wrote: EGR valve can cause it too, but they throw up the EML usually.
The OP did say the EML was coming on...

Best bet would be to find a nearby forum member with a Lexia to find out exactly what the EML is complaining about, saving a lot of trial and error and guesswork...
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Re: Xsara picasso 2.0 hdi loss of power

Post by Lighty »

As a quick test, try disconnecting the MAF and see how it runs then, usually makes a good improvement if its broken.
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Romzi
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Re: Xsara picasso 2.0 hdi loss of power

Post by Romzi »

Check my posts about Xantia 2.0 HDI.
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kitchD6C
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1999 Saxo VTR (16v)
2000 406 Coupe V6
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1973 Hillman Imp (TU engine...obviously!)
1996 TVR Chimaera
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Re: Xsara picasso 2.0 hdi loss of power

Post by kitchD6C »

Lighty wrote:As a quick test, try disconnecting the MAF and see how it runs then, usually makes a good improvement if its broken.
Didn't in my experience. Only way I knew it was duff was when I bit the bullet and just ordered one.
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kitchD6C
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1983 BX 16TRS
1987 BX GTi 16v
1990 BX 16 Valve
1996 Xantia Activa
1997 Xantia Exclusive
1999 Saxo VTR (16v)
2000 406 Coupe V6
2007 C6 Exclusive HDI
1973 Hillman Imp (TU engine...obviously!)
1996 TVR Chimaera
1996 Iveco Daily 35.8
2006 Ford S-Max 2.5T
x 4
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Re: Xsara picasso 2.0 hdi loss of power

Post by kitchD6C »

Mandrake wrote:
kitchD6C wrote: EGR valve can cause it too, but they throw up the EML usually.
The OP did say the EML was coming on...

Best bet would be to find a nearby forum member with a Lexia to find out exactly what the EML is complaining about, saving a lot of trial and error and guesswork...
Ah missed that! still more likely to be AFM I reckon though. EGR doesn't usually cause it to be that flat.

Anyway, here's my Picasso on the dyno with the aforementioned issue:

Image

Here it is, with new AFM:

Image

And here it is now:

Image

well it would be if the remap hadn't eaten the clutch
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