There are a few pretty detailed how-to's out there. I believe there is a workaround for the ECU-TCU but not exactly sure what it is. The other option would be a reflash/tune as you said.

Sale is...

Howdy!

Haven't been around here much as I sold my XC a couple years back but figured someone here might be interested in this:

I've got a complete M66 swap kit available - pulled from an 05...

Letting go of my '06 XC70. Looking for $6500 but will consider offers, looking to close deal around Nov 2-3. Car is located in Salem, OR currently, and I am in Berkeley/East Bay area. Will consider...

Most annoying part of any job I've tried on these cars.. took 30+ minutes of prying that one clip that decided to be stubborn. Dunno how many clips i busted out in the process.

Just be careful...

Definitely get some MAF cleaner and spray it down if you haven't yet. If you have the old MAF, you could clean it up and swap it in (could have just been dirty in the first place), or try running the...

Sounds like either a vacuum leak or a bad Idle Air Control Valve (part no. W0133-1661418) which is annoyingly expensive.

Vacuum tubes tend to get crusty at this age so it's probably worth the...

EDIT: nothing to do with steering, just weird headunit issue where something internally is losing contact occasionally. Never got around to replacing volume encoder (figured getting used headunit...

Not sure about engine shutdown, but in general sounds like a bad air/fuel mixture situation.

Have you replaced air and fuel filters recently? Injectors could maybe use a cleaning.

How about...

Start with new fuel and engine filters and fresh set of spark plugs. Buy a can of cleaner to make sure the MAF is clean. Pull codes with VIDA (more specific than generic OBDII).

Could be a lot of...

I would suspect the head gasket is the mostly likely culprit. I had oil seeping past a spark plug at only 90k before servicing PCV. Not too expensive to replace but does require a special tool to...

Whelp... there goes my hopes to get this done for less than $200.

Anybody have good luck with the iPD breather hose instead of the OEM?

Car was running real smooth in the desert this summer,...

2006 XC70, 105k, (finally got around to the timing belt service a few months ago)

Gearing up for a PCV System Service and looking into which parts I'll need to replace, planning on ordering during...

2006 XC70 with 100k on the clock. Check engine light on, symptoms include:

-Engine struggles to maintain idle speeds, especially on startup and when cold
-Engine speed dips and shudders, will...

That's a bold statement, JRL. ;)

Huh. Didn't realize the car has its own emission test... And this has to be completed after every code reset?

If that's the case you should keep an eye out for whatever codes the previous owner...

As far as I know, these emissions test basically just check that all the sensors on the intake and exhaust are functioning, including MAF, MAP, FPS, oxygen sensor etc.

If it failed, its likely due...

+1

Easy fix, takes about 10 minutes. Amazon also has the part for ~$60, listed under Standard Motor Parts (STP), but its really a re-packaged Bosch. Avoid OEM unless you're dying to spend 2-3x as...

If it's definitely not an engine problem, then here's what I suggest.

Consider adding some Seafoam Trans Tune to the ATF. It might pick up some of the deposits/shavings in the valve body, which...

Gonna post this here for for reference:



IPD says its the same part for MY01 as MY06: https://www.ipdusa.com/products/6628/114270-fuel-pressure-sensor-turbo-5-cylinder-s60-v70-xc70-xc90

I...

I'm relatively new here, but also thought I had transmission problems, when it was really a fuel pressure sensor issue that was causing the engine to lose power and transmission to drop out of gear....

Yeah, yeah. I was skeptical about the codes until the fuel pressure tripped the check engine light. At that point it was fairly straighforward. Glad I took the advice on picking up a DiCE unit!
...

Vibrations comes through steering wheel and accelerator pedal, but not especially while in P or N. Instructions on replacing the lower transmission/torque mount are a little unclear, do I need to...

New FPS seems to have cleared up my 'transmission issue', thank goodness.

Noticed an immediate improvement in throttle response and smoothness after changing FPS along with plugs and fuel filter. ...

Yeah, check engine light went on again yesterday, this time it was just the FPS code. Pulled the plug on the SMP sensor on Amazon (re-branded bosch w/o wire fitting, good reviews from many volvo...

I'm inclined to agree, but would rather have this properly diagnosed before throwing parts at it. MAF codes are also showing even though I am almost certain that the MAF sensor is fine.

Severly...