replace coils or wait for failure

ylwgto · Post by **ylwgto** » 02 Apr 2021, 15:12

3.2 AWD 121K

Maintenance history has been followed, so plugs changed twice in life of car (not sure what plugs are in it yet)
Considering proactively changing coils, but it is pricey.

no issues with misfiring at all, yet, so what can I stand to gain by doing this proactively besides piece of mind?

what brand recommended? are there any discounted price coils that are reliable?

Post by **SuperHerman** » 02 Apr 2021, 15:28

My thoughts - examine how difficult it is to change the coils. The car will not become inoperable from a failed coil. It will get you home or to a station. I have never worked on a 3.2, but on all other Volvos it is pretty darn easy.

I would feel safer with a scanner, spare coil and the few tools needed to swap than I would from a brand new freshly installed set from the dealer or where ever to be honest. Coils, with a properly serviced engine, fail with no rhyme or reason it seems. On various makes I have seen them go with a few k miles and other stories of people reaching 500k on the original set.

Post by **matthew1** » 02 Apr 2021, 15:49

Buy one coil. They die singly, not in pairs or all.

Post by **pgill** » 02 Apr 2021, 17:29

I agree with Matt and Herman

I own two 3.2s both with more than 125K miles and I've replaced zero coils

But I do have an actual Volvo coil on the shelf (for that day) exactly as Matt described

For my $$$

I would spend the money on a new Thermostat (a failed Thermostat, which is common, can lead to coil pack failures)

And after that I would buy some Denso Iridium TT 4704 sparkplugs

Take care

Paul

Post by **oragex** » 03 Apr 2021, 11:02

As above have a spare coil but keep it inside your trunk