Injector wiring harness oil leak

[aknavy]

2001 D12. My injector harness started to leak at the beginning of the year.  I just had it officially diagnosed, and the dealership can't get the part here before I'm scheduled to move.  I have not had any electrical issues as of yet.  For those of you that have dealt with it, is this something that can wait another 5k miles till we're settled down for a while and I can get it done?

[Darryl&Rita]

My understanding is that it's a lit fuse, ticking time bomb, water drip in the middle of the night. Pick your analogy. The longer it's there, the more likely you'll suffer damage.

[aknavy]

1 hour ago, Darryl&Rita said:

My understanding is that it's a lit fuse, ticking time bomb, water drip in the middle of the night. Pick your analogy. The longer it's there, the more likely you'll suffer damage.

Yeah, that's what I'm afraid of.  I'm gonna put it off till we settle down for the winter and roll the dice.

 

[SuiteSuccess]

On 10/4/2023 at 2:30 PM, aknavy said:

Yeah, that's what I'm afraid of.  I'm gonna put it off till we settle down for the winter and roll the dice.

 

The shop (or you) can sometimes silicone around the leak.  I have a 2006 D12 and that’s what had been done to mine.  It still leaked but the head mechanic at the Volvo dealership I use said he would continue to drive it until it started leaking more.  I replaced it at the next PM which was a year later.  It’s costly a couple of thousand I think. They do make a patch kit to help keep it from leaking into the ECM.  Early this year I had to replace my ECM and when they opened the back it had water and oil in it but also the sealant around the back plate of the ECM was deteriorated, crumbling and had gaps.  My thoughts are the original “leaking” harness was not the culprit just old sealant.  In summary, you pay your money and take your chances but in all likelihood will be fine until you can replace it.  What I would recommend is, if you are mechanically minded, remove your ECM and look at the sealant on the back and reseal if necessary.  OTR performance has a video on YouTube titled “Volvo Truck/Replacing ECM on D12”.  Doesn’t look like a hard job.  Might want to review this thread for the repair kit 

 

[lappir]

18 minutes ago, SuiteSuccess said:

The shop (or you) can sometimes silicone around the leak.  I have a 2006 D12 and that’s what had been done to mine.  It still leaked but the head mechanic at the Volvo dealership I use said he would continue to drive it until it started leaking more.  I replaced it at the next PM which was a year later.  It’s costly a couple of thousand I think. They do make a patch kit to help keep it from leaking into the ECM.  Early this year I had to replace my ECM and when they opened the back it had water and oil in it but also the sealant around the back plate of the ECM was deteriorated, crumbling and had gaps.  My thoughts are the original “leaking” harness was not the culprit just old sealant.  In summary, you pay your money and take your chances but in all likelihood will be fine until you can replace it.  What I would recommend is, if you are mechanically minded, remove your ECM and look at the sealant on the back and reseal if necessary.  OTR performance has a video on YouTube titled “Volvo Truck/Replacing ECM on D12”.  Doesn’t look like a hard job.  Might want to review this thread for the repair kit 

It's a full day for a trained and working professional mechanic with all of the proper tools. At least that's what I was told when my harness bit the dust and took out the ECM too. It's also a lot more than a "Couple Thousand", when it happens. It's really not an "IF" from my understanding. I was also told the repair did not "FIX" the leaking, but apparently they put a different location for the "Failure" to happen before it got to the ECM. 

That's my first hand experience so far. That trucks For Sale, btw. 

Rod