Generally P3 models have been very good and are disliked by techs for not needing more things serviced and repaired. There are things that do fail in time on P3 models just like any car of any make. The electric cooling fans and the controller have shorter life than P2 generally. That may have alrea...

The tensioner is damped. Even though it has the lock on it you will have to move it to get the lock off. The dampening is pretty strong so you put a 6 point socket on the hex nub and push on it and wait for it to s l o w l y move. A lot of these tensioners get that 19mm hex nub broken off due to exp...

Older systems with no external control or temp sensors used internal temp sensor and would lower voltage target when the alternator warmed up. That gave the very repeatable 14.1 +/- that would go down to 13.7 +/- after a few minutes. Batteries by their nature will have variable internal resistance a...

5's after 97 or thereabouts have two notches and the oil pump will be in the middle. Earlier have one in the "valley" and later have two marks on the "hills". If you look straight down and find the ridge just behind the balancer side of crank gear you will also have a mark to mak...

Engine running is a different status on the network. The SWM(steering wheel module), the plate the stalk switches mount to, could be going offline and then the wipers will default on for some P2s. Have you noticed if turn signals function or high and low beams can be selected when wipers are doing t...

I agree with fuel pump as the most likely cause. I have had a few of the P2 models in the 04-09 year range that had the intermittent start problem. Some would do it a few times and then go hundreds or thousands of miles and then have a repeat. I put fuel pressure gauge on and the pressure would drop...

All the fuss with the cooling system is a waste if there is combustion gas in the cooling system. That is an easy test. Find a shop that will do it and then if that is clear the other items should be checked. If there is combustion gas in cooling system then pressurizing the cooling system and viewi...

Heli-coils are not good for this. Those do not tolerate re-use well at all. The "spring" will walk out of the hub when the lug bolt is screwed in after a couple of removals. TimeSert will work great as it is a solid insert with a larger tapered stop and since it is an insert you can put lo...

No. The anti-theft functionality of late model Volvos, common to all makes these days, does not allow ECP swapping without download. The Volvo system, like many others, doesn't support used module installation. Before you go too far with other things it would be a good idea to check the crankcase ve...

The system on your S60 uses a physical thermometer probe and cycles compressor due to evaporator temp. If you put fan on high speed and the car is hot, 95F inside then it might be as high as 40 psi and may not cycle for a bit but one the air from vents gets into the 40's the compressor will start cy...