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Let me sum up whats happening with my reverse....
If I select R and immediately give some gas, the car will back up normally. But if I select R and then hesitate to see if anyone is behind me, then go to the gas, the revs come up but the car doesn't move. If I tickle the gas, then after a second or so, the car starts to move backwards slowly. If I give too much gas, the car slams into reverse.
This problem is worse if the car is parked nose down. If it is parked nose up (in the driveway) then the problem is almost UN-noticeable.
I've had the car for almost a year, and I started to notice the problem soon after I got it. So as with my other BMW's, I changed the trans oil and filter. Yes, it does have the correct (expensive) oil and yes, the level is good.
Today, I was told by someone who should know, that the problem is almost certainly inside the box and not in the VB.?
This may be, I don't pretend to know as much as him about this particular box on the 4.6, but it seems to me that the VB controls the oil flow to the internals. It would only take a small piece of dirt stuck in the reverse solenoid, or a worn/broken O ring in the VB to cause this lack of consistent pressure.
This car has 188,000 miles on it, but it is in really great condition, except for this.
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08-24-2022, 02:28 AM
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