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Tuneup/spark plug question Topic is solved

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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subzerocarfanatic
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Tuneup/spark plug question

Post by subzerocarfanatic »

I wanted to ask, what is the best suited spark plug for the C70 2.3 Turbo?
It has brand new NGK Platinum in it right now but after the melted coil #3 issue I was going to replace all the coils and was questioning the plugs, I found a used OEM BOSCH coil set of 5 with 10,000 miles on them for $55, is that a good price and ok to use these or should I fork out for new ones? I found a new set of original Volvo plugs for $55 is why i'm asking.
The set of coils i found say they are for 2003-2005 XC70 but the number on the coil tube is 1 220 703 014 which is the same number on my coils,won't these work on the C70 2.3?
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Re: Tuneup/spark plug question  Topic is solved

Post by misha »

If the numbers match,they are ok.
About spark plugs....gap is critical on turbo engines...so use volvo set of 5 for turbo engines or cheap copper NGK or Bosch and gap them properly.

https://www.rendcarparts.com/volvo/part ... D9125601BO
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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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Re: Tuneup/spark plug question

Post by subzerocarfanatic »

misha wrote: Fri Jul 03, 2020 11:27 am If the numbers match,they are ok.
About spark plugs....gap is critical on turbo engines...so use volvo set of 5 for turbo engines or cheap copper NGK or Bosch and gap them properly.

https://www.rendcarparts.com/volvo/part ... D9125601BO
Why do the OEM Volvo ones not come pre set?
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Re: Tuneup/spark plug question

Post by erikv11 »

That's a great price for the coils and if the numbers match, they will work. Specs say same part number for those cars too https://www.fcpeuro.com/products/volvo- ... 16#fitment

Plugs I the Volvo ones are gapped properly out of the box (0.030, or can go to 0.028) and will last a good 50k miles. I would go with those. You can also save a few bucks and get the exact same plugs without the Volvo label on them https://www.fcpeuro.com/products/volvo- ... sch-fr7dpp
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k
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Re: Tuneup/spark plug question

Post by misha »

subzerocarfanatic wrote: Fri Jul 03, 2020 11:48 am ...Why do the OEM Volvo ones not come pre set?
Who said that?
They do.
Proper gap setting is for cheap copper Bosch or NGK.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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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Joined: Sat Oct 19, 2019 6:41 pm
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Re: Tuneup/spark plug question

Post by subzerocarfanatic »

How many miles are OEM BOSCH coils good for?
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Re: Tuneup/spark plug question

Post by misha »

If spark plugs are replaced regularly and if you maintain charging system,they can last forever.
DIS system doesn't like low charging output from the alternator and battery must be healthy.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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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subzerocarfanatic
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Re: Tuneup/spark plug question

Post by subzerocarfanatic »

https://www.ebay.com/itm/5pcs-Ignition- ... .l4275.c10
What about using these since the entire harness is not a viable option ?
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Re: Tuneup/spark plug question

Post by subzerocarfanatic »

misha wrote: Fri Jul 03, 2020 1:53 pm If spark plugs are replaced regularly and if you maintain charging system,they can last forever.
DIS system doesn't like low charging output from the alternator and battery must be healthy.
Ok, thank you.
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Re: Tuneup/spark plug question

Post by subzerocarfanatic »

https://www.ebay.com/itm/Volvo-Direct-I ... SwhMJcp7V7
I found these ,look to be OEM Volvo ones.
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