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I couldn't agree more! I have a 3.6L Wrangler with the same thing.... ridiculous
I put 357K on my 2013 wrangler without any issues and I don’t remember anyone on that forum having an engine grenade because of the variable pressure pump.
I put 357K on my 2013 wrangler without any issues and I don’t remember anyone on that forum having an engine grenade because of the variable pressure pump.
LOL... The Chrysler 3.6 is probably more prone to misfires with the cam follower trashing the cam being one of the biggest failures on these trash engines. Good job Mercedes
Wonder if you could pull the solenoid, leave it connected and just plug the port?
That or just purchase another solenoid and plug that one in. Our F350 should be on this list so may go that route, but if my personal truck wasn't on this list I would definitely try this mod.
Wonder if you could pull the solenoid, leave it connected and just plug the port?
The suggested 2nd solenoid is the way to go. I'm sure there is a bypass spring/check ball under the solenoid. The solenoid probably just is a 2 stage plunger (stiff spring, not stiff spring) allowing the pump to bypass a lot of oil lowering the power required. The plot above looks like a 2 stage situation to me.
If you had a block off plate that may work but a 2nd solenoid would be cheaper I think.
I found a DTC for variable oil pressure on some other more mainstream Ford vehicle, looked that up in service data for the 2023 F250 and found the procedure to test the oil pressure control solenoid which gave the PID to monitor.
Setup the same PID in Forscan and monitored live data.
Is this an easy hack? Link to it or a “how to” post would be awesome. I for one and I’m sure others would be very grateful.
Looks like oil pressure was steady around 20-21 psi. Didn't matter whether it was in park or in gear idling.
Originally Posted by ssls6
The suggested 2nd solenoid is the way to go. I'm sure there is a bypass spring/check ball under the solenoid. The solenoid probably just is a 2 stage plunger (stiff spring, not stiff spring) allowing the pump to bypass a lot of oil lowering the power required. The plot above looks like a 2 stage situation to me.
If you had a block off plate that may work but a 2nd solenoid would be cheaper I think.
As long as there’s 20 psi minimum, I don’t think it’s going to be a problem for my use.
After reading service data further, it would likely be a bad idea to unplug or disable the oil pressure control solenoid permanently.
Apparently, there is not a traditional spring-loaded check relief built in to the lubrication circuit, it relies on the PCM controlled oil pressure. Disabling the solenoid gives you all the pressure all the time, and while that's fine in toasty central FL, you may regret the decision in a cold climate because it could exceed the oil filter's ability to remain in one piece or worse yet, pop the front and/or rear seals. I saw 95 psi on cold start this morning.
So the truck does have a real oil pressure sending unit somewhere. I thought it only had a pass/fail sender and that's why we cannot see real oil pressure on the dash.
I did some reading through the service manual this morning and played around with ForScan for some live data logging. It was interesting. According to the manual, if you unplug the solenoid and start the engine, you should see a minimum 40psi rise in oil pressure and yes it will set PO6DD. That to me says you can defeat the variable displacement functionality.
Cold startup, the oil pressure was right at 95 and stayed there for about 20 seconds then it went down to 28ish and held there independent of RPM. Note the oil pressure is abs.
Show me proof these are real numbers with a manual gauge hooked up. I can almost guarantee you these numbers are a made up algorithm by the trucks computer.
Show me proof these are real numbers with a manual gauge hooked up. I can almost guarantee you these numbers are a made up algorithm by the trucks computer.
Or, perhaps with your superior intellect, experience and academic background, you could show us similar data and resarch results, that support your "almost guarantee" that the data posted here is not as represented.........
Or, perhaps with your superior intellect, experience and academic background, you could show us similar data and resarch results, that support your "almost guarantee" that the data posted here is not as represented.........
Is this one of those "Real" nuggets you were referring too?
