2011 XC90 3.2 AWD auto 162K Stall and no Start Topic is solved

Taskmaster · Post by **Taskmaster** » 15 Dec 2019, 12:15

We have a fairly recently acquired 2011 XC90 3.2 AWD auto w/162K my daughter was driving home and it started to run rough and stalled out on her. I tied to start it and it cranks a couple times and stops. Checking the OBD codes I get a P0301 and a P0351. Any advice besides check plugs and coils? Could a bad coil actually cause a complete no start (and the stall out)? I thought it's weird the way it only cranks a couple times too. Thanks for any help.

Taskmaster · Post by **Taskmaster** » 15 Dec 2019, 13:13

Just to add, both P0301 and P0351 were pending codes.

Im not sure swapping coil location will tell me anything if I can't get it to start.

Post by **oragex** » 15 Dec 2019, 14:53

A bad coil would not cause a non start. Do you mean, you hear the engine turning (cranking) then it stops ? Doesn't it happen not to crank at all when turning the key ? The battery and all power connectors are clean and tight ?
Swapping coils location won't help as long as the engine doesn't fire. To find a bad coil , see this www.youtube.com/watch?v=nDwtZCWU7u8

Taskmaster · Post by **Taskmaster** » 15 Dec 2019, 16:15

Yes, it seems that fuse #10 (20A) in the engine compartment is blown - so no coils getting juice and no start. I replaced it but it blows again right away. I tried changing it to see if I could limp it home, but no so I had it towed. I've seen a few posts where people had a bad coil pack that caused that fuse to go so I'm hoping that's it. I'll see how much the coil is at the dealer or order from FCP tomorrow.

Taskmaster · Post by **Taskmaster** » 16 Dec 2019, 20:45

The coil on cylinder 1 was definitely bad... and melted in several spots. Replaced it, replaced fuse 10 and the XC90 is back up and running.

Post by **oragex** » 17 Dec 2019, 07:29

That was quite melted, good find! Worth having a spare one inside the trunk at these miles. I would also replace the spark plugs if they are old (they can also cause a coil to go bad)

Post by **pgill** » 17 Dec 2019, 13:05

The Thermostat is a know failure point in the 3.2 and they typically fail around 100,000 miles or 10 years

When the thermostat fails there is some evidence that the higher engine temperature can lead to coil pack failures.

I recommend that you replace your thermostat some time soon.

If you do let us know if it was broken.

Link with pictures of how the thermostat fails

viewtopic.php?f=31&t=86205

One last thought; the Thermostat isn't that hard to change on the XC90 you likely won't even need to remove the intake manifold.

Take care

Paul

Post by **xHeart** » 17 Dec 2019, 13:14

150,000 miles service takes, belt, tensioner, pulley, water pump, ps pump, all filter and fluid change, and more.