Well holy hell not even a year into my dads new Volvo ownership and all hell is breaking loose. DEF issues. Somehow the Bosch pump has a tendency to leak DEF fluid into the harness. The problem is once it touches the DEF harness it wicks its way into the main harness. No idea why this happened. One theory is overfilling, the other is cold weather. I've heard other makes have this issue too. Come on it's been 10 ****ing years with this DEF ****.
Initially they said 6-12 weeks. But now they've sourced a "generic harness". Labor/parts is still $10,000! Sure it's on warranty but unless they engineer a solution the truck is worthless off warranty.
The dealer should build the harness to correct spec instead of "finding something".
Sounds like a Volvo problem...I haven't seen that problem in at least 5 years on our stuff. Same BOSCH Module on about everything, depending on dosing rates.
Chris
Well holy hell not even a year into my dads new Volvo ownership and all hell is breaking loose. DEF issues. Somehow the Bosch pump has a tendency to leak DEF fluid into the harness. The problem is once it touches the DEF harness it wicks its way into the main harness. No idea why this happened. One theory is overfilling, the other is cold weather. I've heard other makes have this issue too. Come on it's been 10 ****ing years with this DEF ****.
Initially they said 6-12 weeks. But now they've sourced a "generic harness". Labor/parts is still $10,000! Sure it's on warranty but unless they engineer a solution the truck is worthless off warranty.
You would think so.
I think it has to do with our climate here in Winnipeg, MB. The Bosch module should not under any circumstance leak DEF into the harness. That is a pretty bad design flaw in itself, never mind what is causing the leak past the pump in the first place.
My guess is this will happen when the DEF is frozen and the temperature sensor (or whatever it is) reads incorrectly and the pump tries to pump frozen DEF. Even then there should be protection for the pump, and it certainly should not leak internally. There should be some sort of way that it will leak into the tank if anything. Or leak out. But the harness? Come on!
I have heard of other makes having this issue, it doesn't sound like a Volvo specific problem. DEF freezes solid around 12 F.
Warranty is what it is, it is a way to protect the customers from manufacturers defects...it doesn't cover the time to diagnose the rail pressure problem on the tractor we worked on yesterday because the customer hasn't changed fuel filters in 1192 hours. FYI
Chris
Chris
Yes defects, but is this a defect or is it a design flaw? If so many other trucks are having this issue, there is a re design needed with a recall.
The issue isn't DEF freezing, it's how the tank and pump handle the freezing. Did the computer try to run the pump while it was frozen? Did the seals blow as the DEF froze? Do they expect everyone up here to run their trucks 24/7 6 months of the year?
I also find it interesting that the urea and water makes ammonia, which is what actually reacts with the NOx. Go look up the freezing point of ammonia.
It really is something else that I did an inframe for $10,000 Canadian pesos on my Detroit and my dads warranty claim is the same amount. My truck doesn't even have that ****. I can't imagine what the turbo and turbocompound costs.
The manufacturers dont want the problems gone. They just want it to get through warranty with as minimal cost to them as possible
Is that Terrance or Phillip on that bill?
Top right by the orange mark is the pressure sensor. They fail at a high rate. When they fail the weep hole leads directly into the compartment shown. It does not leak to atmosphere. There is no weep hole in this compartment. You can see the traces of DEF everywhere. Now look at the bottom left. Thats where the plug is. So the compartment starts filling with DEF and its only outlet is the wiring harness. Its literally pressurizing the DEF into the harness.
But wait, theres more.
After the DEF enters the harness what is going to stop it? So now the DEF harness - or whatever it is called - is ruined but the DEF keeps going to the main harness contaminating and destroying it as well. At this point a simple sensor failure has caused $10,000 in damage!
But wait, theres more.
It didnt happen in this case but the DEF can even make its way into the ACM. My guess is if that happened it would be an additional $5,000.
Someone needs to redesign and recall this system. It has a cascade of engineering flaws that lead to cascading failures.
Why don't you just redesign it at your own expense since you have it all figured out? You could make billions on truckers alone.
Chris
Could you even do that? Tampering with emissions equipment?
On a side note what do you guys recommend for kingpin kits? Are no ream kits a good option? I'm getting the axle eyes bushed.