What did you do to your P2 Volvo today?

Post by **- Pete -** » 23 Dec 2021, 00:56

vtl wrote: 22 Dec 2021, 18:54
- Pete - wrote: 21 Dec 2021, 23:35 - new Bosch spark plugs (FR7DPP+) (#3 wires’ insulation needed help)
You can get a replacement wire harness for $90. I installed one like this a year ago.

https://www.ebay.com/itm/234280086036

Thanks VTL.
You know, when I saw the insulation flaking off it didn’t worry me too badly. I thought I already had one of those harnesses, turned out to be the harness that runs over to the ECM/TCM.

Thanks for taking the time to share!
The quality of your harness is ok?
Do you recall if the seller you bought from was from Russia?
For now, since I did not have the harness I thought I had as a backup, I just unpinned, heat shrinked & moved on with life. Hard to believe I hadn’t had any oddities/maladies due to the crumbling insulation.

For ~ 1.5 years I’ve been struggling to find the source of an intermittent loss of boost issue. With the ECM tune I have, my boost gauge will typically peak around 15psi. When the intermittent loss occurs it’s almost like there’s an audible/electronic “click” (akin to a relay) and boost cuts to 7ish psi. Colder temps may be the wind to my back right now, but as I noted earlier (but didn’t make mention of why I did it), I coated every contact point on my CEM, ECM, TCM, etc with 100% DEoxIT and I (knock on wood) haven’t had a single re-occurrence to date.

I am so amazed at how much power this old, unattractive (by millennials/today’s standards) beige station wagon has! It’s crazy that at 310k miles & all original big stuff (engine, transmission, both bevel gears, collar sleeve, etc) this not-so-light AWD wagon can haul so much butt!

I did have a CEM faulty signal in ViDA. Need to spend more time concentrating on it to get to the bottom of it.

Rvolvos · Post by **Rvolvos** » 23 Dec 2021, 15:07

Thanks Pete, Happy Holidays!

Post by **vtl** » 23 Dec 2021, 22:24

- Pete - wrote: 23 Dec 2021, 00:56 The quality of your harness is ok?
Do you recall if the seller you bought from was from Russia?

I know that guy virtually well enough. He is Russian. Hope to drink a beer or another with him one day. He's like we, MVS crowd, are: a Volvo owner who fixes his old Volvo (V70XC) every other weekend. One day he made a wire harness for his own Volvo, and it turned out pretty well. Others asked him to do another harnesses for their P2s, so this is how his small "business" went online. I'm not sure he makes any significant profit from it. If I would do that, the price would me much higher.

The harness is not like 100% factory, but he uses a quality components, like Bosch connectors, so at the end it works out really well. I am very glad with the result.

A wire harness from a guy who actually cares about Volvo, not money.

Post by **- Pete -** » 23 Dec 2021, 22:58

vtl wrote: 23 Dec 2021, 22:24 I know that guy virtually well enough. He is Russian. Hope to drink a beer or another with him one day. He's like we, MVS crowd, are: a Volvo owner who fixes his old Volvo (V70XC) every other weekend. One day he made a wire harness for his own Volvo, and it turned out pretty well. Others asked him to do another harnesses for their P2s, so this is how his small "business" went online. I'm not sure he makes any significant profit from it. If I would do that, the price would me much higher.

The harness is not like 100% factory, but he uses a quality components, like Bosch connectors, so at the end it works out really well. I am very glad with the result.

A wire harness from a guy who actually cares about Volvo, not money.

Thanks for the referral!
Just ordered one, thanks again to you VTL.
Many thanks for your continued contributions here; I feel like I learn something every time I read something you’ve posted.

Post by **vtl** » 23 Dec 2021, 23:18

- Pete - wrote: 23 Dec 2021, 22:58 Many thanks for your continued contributions here; I feel like I learn something every time I read something you’ve posted.

I feel the same, Pete, same...

sal329 · Post by **sal329** » 24 Dec 2021, 14:42

Replaced the input speed sensor and cleaned mass air flow sensor. Now she shifts great and no more check engine light

Post by **Skymongrel** » 28 Dec 2021, 09:58

Yes, I was wondering about the hose lining deterioration thing. I am usually careful about cleaning pins and stuff. Haven't paid as much attention to pistons, but don't recall doing anything extra this time to get this braking performance. I have found sticky glide pins even though I carefully lubricate them. Not complaining at the moment!

Post by **vtl** » 28 Dec 2021, 10:09

Skymongrel wrote: 28 Dec 2021, 09:58 I have found sticky glide pins even though I carefully lubricate them. Not complaining at the moment!

ATE forbids directly lubricating those pins

They prescribe changing them semi-frequently, along with the rubber boots.

I lube them, too, though

Post by **Skymongrel** » 28 Dec 2021, 10:53

I replaced my PCV system on my 2006 XC70 (178K). Nothing to brag about here; there must be a better way! Really struggled getting the fancy pcv pipe mounted to the intake manifold. With the pcv pipe attached at both ends to the coolant hoses, it is simply not flexible enough to manipulate and get the 17mm PCV bolt safely threaded to the manifold easily.

I followed the method shown in some popular online videos of attaching the pcv pipe/nipple to both coolant hoses before mounting to the manifold. I think it would be better to NOT attach the incoming hose to this fitting until after the pcv pipe is mounted to the manifold. And installing a new incoming coolant hose might make everything more flexible as well. The incoming hose is not included in common PCV kits.

My failed PCV system did not display glaring symptoms but at my mileage I thought it prudent to do the replacement. The smaller port on the block was definitely clogged and the coolant pipe/nipple too.

I found an inexpensive 1/4 inch wobbly extension bar set to be quite valuable in doing this job and didn't have issues with that lower passenger side intake manifold mounting bolt. I also used a 17mm stubby for the pcv pipe bolt, never would have got it mounted without it. Oh...I also removed the driver side lower manifold bolt to let me lower that end. I think that helped.

A couple other thoughts. Don't secure the large PCV trap/box hose until you've mounted the box to the block with the two torx screws. I had difficulty aligning the screws to the block because the hose was putting tension on PCV box. I also replaced the torx screw that is buried at the lower left of the box with a hex head bolt as this bolt was less likely to fall out of my 1/4 socket (and I just happened to have one). It was 30 degrees last night in the garage, I'd do this job when its warmer!

Post by **Skymongrel** » 28 Dec 2021, 11:03

vtl wrote: 28 Dec 2021, 10:09
Skymongrel wrote: 28 Dec 2021, 09:58 I have found sticky glide pins even though I carefully lubricate them. Not complaining at the moment!
ATE forbids directly lubricating those pins They prescribe changing them semi-frequently, along with the rubber boots.

I lube them, too, though

Wow...did not know that! Damn maybe I'll get new pins the next time, after all these are original. Thanks!