Engine: B6294: - Ignition Coil Paks

nyc1dxo · Oct 9th, 2009, 02:21

As I like to have a preventative maintenance program for my 2001 S80 2.9L, I want to test my coils to see if they're still good.

Do they slowly fail or just quit?

I tested three coils by probing the four contacts. Mind you, I was just randomly testing/playing and saw that two coils had very similar values registering. The third one was registering a higher number. So something is wrong.

Out of these three coils, do I have to replace one or two of them?

Any testing procedures out there?

John Price · Jan 23rd, 2018, 17:46

Great question I also would like to know. Can one simply energize the coil and see the length of spark?

oragex · Jan 23rd, 2018, 18:34

Unlike on other cars, the original Volvo ones rarely fail, even at high mileage. Usually one will fail, with the rest still being good. It shows as hesitation under hard acceleration at motorway speed. After market ones are a big gamble, and original ones are on the expensive side. Used original ones are the better bet.

GaryP · Jan 24th, 2018, 20:04

I had one pack up out of the blue on my 2.0t last month as I was accelerating onto a motorway. I still made it home on 4 cylinders (just). It's not a coil pack, so you can change them individually. I swapped mine for a Bosch OE standard part for ~€50.

Oct 9th, 2009, 02:21	#1
nyc1dxo Member Last Online: Feb 7th, 2021 20:54 Join Date: Aug 2009 Location: Pelham	Ignition Coil Paks As I like to have a preventative maintenance program for my 2001 S80 2.9L, I want to test my coils to see if they're still good. Do they slowly fail or just quit? I tested three coils by probing the four contacts. Mind you, I was just randomly testing/playing and saw that two coils had very similar values registering. The third one was registering a higher number. So something is wrong. Out of these three coils, do I have to replace one or two of them? Any testing procedures out there?

Jan 23rd, 2018, 17:46	#2
John Price New Member Last Online: Jan 23rd, 2018 21:26 Join Date: Jan 2018 Location: St Cloud FLA	XC V 70 Misfiring Great question I also would like to know. Can one simply energize the coil and see the length of spark?

Jan 23rd, 2018, 18:34	#3
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	Unlike on other cars, the original Volvo ones rarely fail, even at high mileage. Usually one will fail, with the rest still being good. It shows as hesitation under hard acceleration at motorway speed. After market ones are a big gamble, and original ones are on the expensive side. Used original ones are the better bet. __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Jan 24th, 2018, 20:04	#4
GaryP Noob Last Online: Mar 5th, 2024 14:46 Join Date: Mar 2007 Location: Shannon	I had one pack up out of the blue on my 2.0t last month as I was accelerating onto a motorway. I still made it home on 4 cylinders (just). It's not a coil pack, so you can change them individually. I swapped mine for a Bosch OE standard part for ~€50.

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