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96 850 GLT N/A - Rough idle when transmission engaged

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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moacyr
Posts: 26
Joined: 6 September 2014
Year and Model: Volvo 850 1995
Location: Porto Alegre

Re: 96 850 GLT N/A - Rough idle when transmission engaged

Post by moacyr »

So, I changed the spark plugs and used BOSCH SP2 FR7D+. So far it is pretty good.
Old spark plugs were F5DER2
Old spark plugs were F5DER2
One of the 5 was FR7D+
One of the 5 was FR7D+
Comparing the last old plug with new one
Comparing the last old plug with new one

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