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Volvo v70 GLT, fails and staling in hight acceleration

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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djekan
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Re: Volvo v70 GLT, fails and staling in hight acceleration

Post by djekan »

misha wrote: 09 Mar 2022, 10:53 What brand are the cables and spark plugs?
Nothing really works except Bougicord on these cars.

Spark plugs can be cheap copper BUT MUST be properly gapped for turbo engines.

N/a can get away with larger gap but for turbo engines gap is critical.
Hi,
I'm doesn't know what brand is the cables, but have VOLVO marked on it

The spark plugs are new NGK IGR6A11, but I doesn't make any gap, they are like comes from OEM

Thank you
Volvo V70 MK1 GLT - 2.0 Turbo - 1997
Volvo 850 GLT - 2.0 TURBO - 1994
Volvo v40 1.6i- 2001

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misha
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Post by misha »

OE Volvo for turbo engines(set of 5) are platinum...but NGK iridium are also excellent.

Volvo spark plug cables are made by Bougicord...if you look at them...you will see Volvo Bougicord written on them.

I suspect on TPS sensor,fuel pump relay or a hole in intercooler.

You can remove a fuel pump relay and put a jumper wire between terminals to rule out bad fuel pump relay.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

djekan
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Post by djekan »

misha wrote: 09 Mar 2022, 14:09 OE Volvo for turbo engines(set of 5) are platinum...but NGK iridium are also excellent.

Volvo spark plug cables are made by Bougicord...if you look at them...you will see Volvo Bougicord written on them.

I suspect on TPS sensor,fuel pump relay or a hole in intercooler.

You can remove a fuel pump relay and put a jumper wire between terminals to rule out bad fuel pump relay.

OK, I'm suspect on TPS too, I'm waiting for arrive that and one camshaft sensor for chech if it solves.

Fuel pump relay I don't think so, because the V70 have LPG sistem and it fails on both fuels, when I run on LPG the petrol pump is working but return the petrol for tank.
Volvo V70 MK1 GLT - 2.0 Turbo - 1997
Volvo 850 GLT - 2.0 TURBO - 1994
Volvo v40 1.6i- 2001

djekan
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Post by djekan »

Hi there,
Issue solved, for incredible the problem was the spark plugs, I'm bought iridium spark plugs must be platinum I think, before the stalling problems I've put back the old sparks NGK PFR6B, but not solve so today remove the new ones BKR6EIX and put the gap at 0.6mm (recommend for. LPG system) and no more stalling.

I'm don't understand well the difference of 0,02mm make that big difference 😁


But OK, I'm happy for solve this, may be I will change it to OEM platinum sparks.


Thank you very much for all support.
🙏



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Volvo V70 MK1 GLT - 2.0 Turbo - 1997
Volvo 850 GLT - 2.0 TURBO - 1994
Volvo v40 1.6i- 2001

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

0.6-0.7mm is proper spark plug gap for turbo engines.
It's for n/a too,but turbo engines are more sensitive to spark plug gap.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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