Unplugged Oil pump solenoid for longevity.
#1
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Unplugged Oil pump solenoid for longevity.
Hello All,
Has anyone been running the oil pump solenoid disconnect mod? It supposed to help with lubrication and prevent the solenoid from sticking in a closed position and prevent catastrophic engine failure. It will throw a soft code but no DTC. Does anyone know if the readiness monitor will show ready for the environmental testing. Planning on unplugging it soon.
Has anyone been running the oil pump solenoid disconnect mod? It supposed to help with lubrication and prevent the solenoid from sticking in a closed position and prevent catastrophic engine failure. It will throw a soft code but no DTC. Does anyone know if the readiness monitor will show ready for the environmental testing. Planning on unplugging it soon.
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steh-fan (03-25-2024)
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Homer Oz (04-20-2024)
#3
I remember Tasos mentioning that there is a difference between the current oil pump and the old ones, which didn't have the solenoid control. So without any long term data to compare, it is not known whether or not the current pump is strong enough to run full time on full volume. Just something to consider.
Other than that, I don't see any harm in unplugging the sensor. If no DTC is thrown, I doubt the error will show up in the inspection process, especially since MB itself deemed the sensor malfunction unimportant.
Other than that, I don't see any harm in unplugging the sensor. If no DTC is thrown, I doubt the error will show up in the inspection process, especially since MB itself deemed the sensor malfunction unimportant.
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steh-fan (03-25-2024)
#4
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
I remember Tasos mentioning that there is a difference between the current oil pump and the old ones, which didn't have the solenoid control. So without any long term data to compare, it is not known whether or not the current pump is strong enough to run full time on full volume. Just something to consider.
Other than that, I don't see any harm in unplugging the sensor. If no DTC is thrown, I doubt the error will show up in the inspection process, especially since MB itself deemed the sensor malfunction unimportant.
Other than that, I don't see any harm in unplugging the sensor. If no DTC is thrown, I doubt the error will show up in the inspection process, especially since MB itself deemed the sensor malfunction unimportant.
#5
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I hope if deemed by MB unimportant that there is no detrimental issue with the pump running unplugged. Technically the pump has the same torque input from the engines rpm, it probably works more restricted if the solenoid is closed during low demand. But one less headache to worry about, catastrophic at that, seems to be worth the prevention. One could question reconnecting the harness and how that will affect the plunger if it has not moved for a while, might be sludged up to become functional and prone to sticking so maybe best to just continue to leave it unplugged?
#6
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There is an interesting video on this topic:
I'd love to hear, too, whether here anybody tried it.
The comments under the video at least indicate good results.
I'd love to hear, too, whether here anybody tried it.
The comments under the video at least indicate good results.
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
I hope if deemed by MB unimportant that there is no detrimental issue with the pump running unplugged. Technically the pump has the same torque input from the engines rpm, it probably works more restricted if the solenoid is closed during low demand. But one less headache to worry about, catastrophic at that, seems to be worth the prevention. One could question reconnecting the harness and how that will affect the plunger if it has not moved for a while, might be sludged up to become functional and prone to sticking so maybe best to just continue to leave it unplugged?
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#8
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
There is an interesting video on this topic:
https://youtu.be/MuZJSGN8qZ4?si=372iBWzFs0lmm_Xh
I'd love to hear, too, whether here anybody tried it.
The comments under the video at least indicate good results.
https://youtu.be/MuZJSGN8qZ4?si=372iBWzFs0lmm_Xh
I'd love to hear, too, whether here anybody tried it.
The comments under the video at least indicate good results.
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steh-fan (04-22-2024)
#10
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steh-fan (04-22-2024)
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
Did an oil change and removed the engine belly shield which gave me access to the connector. I unplugged it and have put about 500 miles on it. Happy to say no lights came on, I got to check the scanner to see if all monitors are pass/ok at this point. I did not notice a difference, I know a few folks felt a difference when doing it. But peace of mind is good enough for me. Hopefully things last longer like this.
#12
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Yeah I hope I pulled the correct one, I don’t see codes on the cheap $20 dollar scanner, and all readiness monitors are in Ready/OK status so no ill effects.
the connector was near he crank pulley bottom left if facing the engine.
the connector was near he crank pulley bottom left if facing the engine.
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
True
Last edited by W205C43PFL; 04-21-2024 at 08:01 AM.
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OldManAndHisCar (04-21-2024)