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1999 Xc 70 Coil #'s 2&3 not firing

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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dbo550
Posts: 67
Joined: 1 August 2009
Year and Model: 95 T5-R, 98 V70
Location: LouKy

1999 Xc 70 Coil #'s 2&3 not firing

Post by dbo550 »

Can anyone give me any insight as to why these coils are not firing. The ground and the constant work as they should but I have no way to check the trigger, are there any weak links anyone knows of? The coil on number 2 is a brand new bosch, I will switch out with a known good one tomorrow to see if it is bad but I doubt it for now. I have a brand new bosch MAF and the copper plugs are new as well. Is there something in particular that triggers those specific coils? Does the temp sensor, O2 sensor, or something else have anything to do with it? 1, 4, and 5 are working perfect.

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