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Ignition Coils, P0171, P0174

Help, Advice, Owners' Discussion and DIY Tutorials on the current (third) generation Volvo V70 wagon and XC70 crossover, and second generation S80.

This is a forum for owners or prospective owners of the third generation V70, second generation S80, and its siblings built on the EUCD platform.
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Re: Ignition Coils, P0171, P0174

Post by pgill » Tue Nov 20, 2018 6:53 pm

I agree with oragex

The thermostat is known to fail at about 10 years

And there is some evidence that a failed thermostat can cause ignition coils to fail

If you do replace the thermostat let us know if it failed

The failure will be obvious the spring will be in the engine block instead of in the thermostat housing

Good luck


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