2001 V70XC - 200,000 Miles Makeover Topic is solved

[xHeart]

Unless is an experiment in acoustic, I found it to be a clever arrangement of a wind instrument next to strings!

[vtl]

Unless is an experiment in acoustic, I found it to be a clever arrangement of a wind instrument next to strings!

Oh yes, the DP sounds very good! I sometimes crank down the audio and listen to 5 cylinders singing through that 3" pipe =)

[xHeart]

Plan for the following maintenance step: body plastic cladding removal and corrosion inspection :(

Next summer is rear subframe drop, for $700+ bushings replacement and rust proofing the connection spots where subframe gets bolted to the chassis. They are/were rusted on all P2s I had/have.

Sigh... Rust proofing starts with the first owner of the car. My Tundra will not rust, I'd guess ;) Still has to clean my garage floor from the sticky 1600 drops.

After the rear suspension refresh, I imagined resurrecting the subframe at some point. But, here are my parts list for exhaust maintenance - curing the tapping noise.

starting from the exhaust:

MANIFOLD @ EXHAUST
1 Exhaust Manifold Heat Shield 30622418
1 Gasket Kit. Exhaust Manifold. TURBO. 271802
4 Flange lock nut 985868
4 Stud 1336261

TURBO @ MANIFOLD
4 Turbocharger Washer 419401
4 Turbocharger Stud 982667
1 Turbocharger Gasket 8642449

CAT @TURBO
1 Turbocharger Gasket 8642450
3 Lock nut 977209
3 Stud 1357769

PIPE @ CAT
1 Gasket 9179056
2 Flange screw 982797
2 Flange nut 985921

[xHeart]

After the recent idle and engine cut-off issue during a road-trip, it is somewhat stable but not fully; more here viewtopic.php?f=9&t=95124.

The fresh air pipe, TCV and MAF were replaced, but the stutherring to smooth idle continues after 880 miles of Relearn drives.

Close to 202k-mi

Any thoughts?

[vtl]

My 220k miles engine problems ended up in a burnt exhaust valve

[xHeart]

My 220k miles engine problems ended up in a burnt exhaust valve ;)

Thank you vtl!
Would VIDA show any relative code to guide the next step?

[xHeart]

The tapping noise remains an unresolved mystery. Here is a video clip taken from the ground on passenger side https://www.matthewsvolvosite.com/forum ... p?id=51383.

I am open to any pointer. Intermittently comes and goes away.

The intermittent tapping noise was due to a missing (deteriorated and fallen) hose conduit, a 3 inch rubber piece located a foot behind the subframe on passenger side. The hard line #14 travels along the fuel line and connects charcoal canister to purge valve at the fan assembly. The open line made the noise escape the vacuum chamber.

[xHeart]

The makeover is coming to close. All critical parts are Volvo, and quality OEM parts. A ballpark cost of $4387

Here are some highlights since October 2018.
- Lubrication system service: oil pan, oil cooler, oil pump and the PCV
- Fuel system service: fuel filter, fuel rail, and injectors, and intake manifold service
- 2nd Timing Belt: All TB parts, water pump, all serpentine belt parts, front and rear cam seals, and VVT hub replacement –– learned how to manually align crank marks
- Rear suspension refresh: Spring, shocks, links, spring insulator, and shock mount, and coated the rear under-carriage with rubberized rust resistant paint
- Cooling service: radiator, thermostat, hoses, and temperature sensor
- Steering pump service: fluid and seals, and inner and outer tie rod
- Front Brake service: calipers, pads, rotor, and in-situ brake line flaring and repair
- Air Intake service: all hoses and pipes, air filter, turbocharger, intercooler, MAF, TCV, MAP, ACT sensors, and upgrade to XeMODeX throttle body
- Alternator service: replaced INA OAP, upgraded to Volvo Voltage Regulator - Bosch 8637851
- Replaced front seats from a donor car, restored PSM module, and replaced climate control bulbs
- Many small things along the way -- paint retouch, exterior cladding restoration, protection and weatherizing, new tires, looms

Many thanks to MVS Mavericks, and pgill's $10,000 S80 Challenge

[vtl]

Now some serious considerations: my 2.5T blew exhaust valve at ~220k. Cam lobes showed no valve clearance (thermal gap between their backs and tappets). The donor engine I took apart in winter had about the same mileage and about the same gaps picture. Many-many more 5 cylinders died around that mileage.

Looks like 220-240k miles is a Rubicon for valve clearance, not to mention completely worn out valve stem seals.

[xHeart]

Now some serious considerations: my 2.5T blew exhaust valve at ~220k. Cam lobes showed no valve clearance (thermal gap between their backs and tappets). The donor engine I took apart in winter had about the same mileage and about the same gaps picture. Many-many more 5 cylinders died around that mileage.

Looks like 220-240k miles is a Rubicon for valve clearance, not to mention completely worn out valve stem seals.

A thread with 250,000 Miles Climb could guide us there.
Will VIDA provide DTCs to help with failing engine? Is ECM-4801 relevant here?