The procedure should be done under warranty in about half an hour. The problem has been solved with new software, and only applies to cars built with the 6.1 liter engine before July 25, 2005. This happens in particular when the pedal is floored from about 15 mph in essence, the computer can’t figure out at what engine speed to shift. According to the TSB, when the gas pedal is floored, the engine RPM may go beyond the redline before the shift from first to second is made, so there’s a “short hard bump” as the shift begins. That said, there is also a service bulletin covering shift hesitation during wide-open throttle on the LX SRT-8 cars. The engine computer automatically lowers torque when shifting to preserve transmission life. Some people are more sensitive to this than others.but sometimes it's a problem and sometimes it isn't. #Mds disable 06 300c freeFailure to do so may result in improper operation of the MDS.” Watch the mechanic pour it in! (This is said to be the real reason BMW provides free oil changes.) A technical service bulletin (TSB) - 09-015-04 and 09-013-04 - says: “Vehicles with the Multiple Displacement System must use SAE 5W-20 oil. Insist on the right grade and if they don’t use it.get a refund and go somewhere else. #Mds disable 06 300c manualOf course if the owner’s manual says something else, follow its advice - but don’t be convinced by a mechanic or oil-change place. You need to use the right oil if you want to keep your engine. If you have the MDS system, be sure to use 5W20 oil - note that many dealers will use bulk 10W30 or even 10W40, partly out of ignorance and partly because it’s cheaper. Update.Here is the link if you want to see pics and actual article I posted this yesterday but its awaiting approval by admin I believe because I attached a video to it so im posting without the video. I’m going to try to link a video of the valves here in a moment. So far the problem has not returned but tomorrow will be the big test I have a 2 Hour drive to Albany New York and then back. Or Maybe it could be the hydraulic lifters are getting stuck in the collapsed position Due to sludge buildup?īut ever since I had the problem 4 years ago with my other Durango I always use a bottle of engine flush before oil changes.Īnd of course it could always be an issue with the computer doing bad things. And because I did not get a OEM solenoid there’s a greater chance than normal it could be a defective part maybe it’s jamming up in the open position So if it was a wiring issue i would think it would be a problem opening not closing. The solenoid it self only has two wires so I imagine when power is applied it will pop open and when power is removed there must be a spring or magnet that pushes/pulls it back. Or does the oil pressure push on a locking pin allowing lifters to collapse? So I wondered if oil pressure/blocked passage would cause problems with engaging or disengaging? Are the hydraulic lifters naturally pressurized when MDS is off? Like do they fill up with oil pressure and expand the lifters? A oil flush and oil changed fix that problem that was four years ago never returned. But it was the complete opposite it was having a problem going into four-cylinder mode. I’ve had a similar problem With the MDS on my other Durango. so I did not witness the valves not opening. Which I was curious about how the system works because I would assume that’s the valves would not open if they were stuck in MDS mode.īut because the issue goes away after sitting and by the time I pull the valve covers off it sat a few days. Thanks for the help guys I was getting ready to pull the intake back off I’m glad I played around with that connector firstĪt the time I had the valve covers off all valves were working properly. Unplugged and reattached main harness to MDS solenoids. Pulled the valve cover to inspect valve function Put a bottle of engine flush and did oil change #Mds disable 06 300c updateTime will tell if I have any issues I’ll be sure to update them here for anyone in the future that may Google this.Įngine started running rough. I don’t know if it was the seafoam or not maybe re-plugging in the Harnest got a better connection I don’t know but I haven’t had a problem since then. After driving around not even a mile I decided to plug the harness back in to allow solenoids to activate with the seafoam running through it. i’ve been driving around for over an hour and it’s been working as it should.Īfter unplugging the Harnest and not having any rough engine conditions I decided to put some seafoam in it.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |