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A while back I brought up the issue about how the solenoid may be part of the control mechanism for VVT but was told that the solenoid's function wasn't related so my response was based on that.
In other engines, this type of solenoid does in fact control oil pressure for VVT.
All of this VVT stuff is foreign to me so give me some slack, lol.
Give me a big block Chevy with some good aluminum heads and a nice mechanical roller and I'm at home!
Tom, we know everything is only about details and some are variables so it's not helping simplicity.
The oil pump solenoid valve and the VVT solenoid actuators all interact on the valve timing.
The ECU builds VVT Solenoid MAPS based on previous performance. This is directly obvious when upgrading oil viscosity. A given solenoid duty cycle the VVT position will be dissimilar with different viscosities.
> EXPECTATIONS NEED TIME:
A lot of ppl expect MODs to deliver 100% results the 1st day! MOD1 delivers a lot but the whole list of improvements take time... piston rings cleaning!
ECU adaptation maps need time to adjust new mixture and VVT.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I've said this before and will repeat it since in it probably lost in the 1200 posts, but my most notable initial improvement was on my M276 NA engine. The improvement with my M276 Bi-turbo engine was the improved drivability with my Stage 2 tune. Prior to that, my Stage 2 tune was quirky. But the solenoid disconnect immediately improved the tune. Because the car seemed to momentarily bog a bit on light throttle, I really think it was due to the low oil pressure.
Heya i need help please,
it was this connector for the problem
We tried to connect the solenoids but i wasnt fit. idk why and its genuine part A2781800415. we had to remove the noiseplatic pins in there to make it fit.
Like this connector we had to cut this front because doesn't fit too.
After Connecting we could delete code, all fine but thesolenoids was going extremly hot like 100 - 150 C or more we couldn't handle it anymore.It was so hot that you could no longer attach it with a cable tie
How much degrees Celsius should be have the solenoids outside?
We reinstall all and i get back my Error
It is a bit strange that a genuine replacement MB pump solenoid is getting extremely hot to the touch.
As far as this being the right connector you are dealing with... you can tell the code is turned off while the dummy coil is plugged in.
Then why so HOT??
Perhaps it's a different circuit... is there a diode built-in if so harness polarity maters.
Perhaps the solenoid output on your VIN delivers full 12V and M278 use less by way of software duty cycle.
One thing for sure is solenoid does not operate with DC but pulsed modulated frequency that digital Volmeters do not work with. Only scopes can see that low voltage waveforms. You can't measure current either because if the signal pattern.
I do not have a dummy-load plugged in yet... I would need a matching pig tail.
However we can help you figure this out:
> Fixing the Dummy load:
Ohm the dummy coil out of circuit in both directions - Searching for a diode anode/cathode in parallel!
Polarity: DVM won't give you an accurate voltage figure but it will give you polarity info - What wire is the +12V side?
> PLAN-B :
-- Is your ECU output working or stuck Hi/Lo forcing a DC current into AC solenoid ?
-- Did your engine solenoid fried the ECU transistor when it failed 10kMi ago??
I've said this before and will repeat it since in it probably lost in the 1200 posts, but my most notable initial improvement was on my M276 NA engine. The improvement with my M276 Bi-turbo engine was the improved drivability with my Stage 2 tune. Prior to that, my Stage 2 tune was quirky. But the solenoid disconnect immediately improved the tune. Because the car seemed to momentarily bog a bit on light throttle, I really think it was due to the low oil pressure.
JR, do you think we can help Peter figure which of his tuned ECU are most compatible with MODs?
If you can post the "tunes" details of what they do then I can help.
Eventually test if redoing VVT adaptations will speed uptake.
One thing that hardly makes accelerator improvements is the active cylinders oiling, reduced core extreme heat and HPFP lube.
Attached MP3 sound of what my "diesel-style" GDI idle injection this weekend after 2000.Mi of 5W-40.
-- What I hear is :
- the absence of rattlesnake.
- the RPM is fairly even despite hot engine.
-- MOD2 on a 10W-40 oil should bring:
- Lower more even idle RPM.
- stuff I did know ECU could do.
Last edited by CaliBenzDriver; 03-11-2024 at 06:11 PM.
This looks like the oil pan internal harness, right? Allegedly the part that fails and disables the pump solenoid. internal harness
You need to connect your dummy-load to the ECU harness side, not the engine connector.
Make sure the engine serpentine belt can not grab anything loose. Zip-tie everything to satisfaction.
🤞
Yes because the other parts on this thread are not fit for w176 like 2711500156. You right but this is the new part and ofc not to use for ouside. I will try becuase i don't get another fit harness
Heya, already installed the dummy But still extremly hot if Ignition on. Idk why...and Cools down quickly too if Ignition off. if i use Obd II Scanner and ping Y130 and switch to on 90% u can hear the solenoids buzz
I want to know if this is normal that solenoid valve may be so hot.
Heya, already installed the dummy But still extremly hot if Ignition on. Idk why...and Cools down quickly too if Ignition off. if i use Obd II Scanner and ping Y130 and switch to on 90% u can hear the solenoids buzz
I want to know if this is normal that solenoid valve may be so hot.
0 Errors P06DA00 gone
Great, now you have confirmed you are dealing with the correct solenoid circuit and the ECU is pulsing 90% duty cycle, not straight DC.
You have the right part in the right circuit: it's safe.
The dummy-load replacement solenoid is working as designed but it's super hot. It couldn't be better or could it also be made low heat ? ?
Normally inside engine the solenoid is cooled by 200°F oil. Now it is only air cooled...
> Plan-B... :
- We don't want to insert a serial resistor that will be exactly as hot with the same current.
- Try a different coil load, from a cheap universal 12V-DC relay cube.
- The ECU expects the current to be within a min/max range.
- Dummy needs to draw enough current to prevent setting a fault.
Last edited by CaliBenzDriver; 03-12-2024 at 03:15 PM.
Reason: min/max load
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by CaliBenzDriver
JR, do you think we can help Peter figure which of his tuned ECU are most compatible with MODs?
Not sure because my tune was off-the-shelf from Vivid Racing. Because if initial problems I had with the drivability of their Stage 2 tune, it appears that they either removed it or replaced their now ONLY stage with the revised file that they developed for me.
I think the more aggressive the tune, the more the solenoid mod will help smooth running of the tune.
well you've got 2x defective solenoid from separate sources (original + spare)...
"IF" i just get 1 defective solenoid. I just bought 1 original by dealer.
what can i do? nothing just buy another original part.
Maybe my solenoid get to much sauce by protect against dirt. i dont know...
Lotty; It simply means the coil is On (powered). I wouldn't worry about it, but you can put something between it and the hose or whatever if you're concerned.
The car feels great. Oil warms up way faster and so smooth. I did have an issue. It seams like the connector care out when I unplug it from the oil pressure solenoid.
The car feels great. Oil warms up way faster and so smooth. I did have an issue. It seams like the connector care out when I unplug it from the oil pressure solenoid.
So it seem like the connector that you plug into also came out. When the regular connector is disconnect you guys have a lip still on the pump. Mine is not there. Its like a whole now
03-11-2024, 04:37 PM
