tommyj

I pulled the screen, and it was clean. I think this is an old problem, and all the easy stuff has already been done.

Thanks, Copy, Will do..

Is the input shaft gear that wears and causes the banging in high range a replaceable gear, or is it part of the input shaft/direct drive gear? I have seen some videos where this gear has many more teeth on it. Not sure which is correct for my 47 Windsor. Thanks

Well, I finally checked the oil pressure and it was 43psi..Looks like teardown time.

High speed range, clutch out, foot on brake...what is turning? Is oil pump working? C49er...I sent you a pm., but bottom line is..would you be interested in renting the fitting to check the oil pressure? There just isn't a fitting out there with the correct threads. Without the correct fitting, my next idea is to use my push and hold compression tester to check the oil pressure.

Yes, that there is what I need. Will keep looking. Thanks.

Having a hard time finding an adapter to check the transmission oil pressure. The plug appears to be a 7/16-14 thread size. Very uncommon..Any leads for an adapter to use with my oil pressure gauge? Thanks..TommyJ

C49er..I am afraid that is the direction I am headed. I think oil pressure will be good, because it clicks into high without issue. I guess it is just the torque that makes it jump out, while second gear works fine?

Wasn't sure what fluid was in the tranny, so I drained the old fluid out. No shards on the magnetic plug. I refilled with 10W ND oil. Still wouldn't stay in high. 2nd gear is good, and 3rd gear is good. I guess next step is to check oil pressure. Seems like it will either be oil pump, or gears in the tranny.

I drove it today with the relay fuse out. I don't think it made a difference, but I did change the way I drove it, which did change the shifting. When I first went out, It shifted into high, and I gently pushed on the gas. It popped out of high like before. The next time when it shifted into high, I gave it some heavy throttle. It stayed in high, but there was a clunking/banging sound. It seemed like it was trying to disengage, but the sleeve didn't move far enough, then it would fully engage again. Like a back and forth movement of the sleeve. Seems like not enough pressure to hold it in high gear completely. I did get up to 55mph before I ended my trip. I think I will fill the tranny all the way up, and see what happens. I guess I need to hook up a pressure gauge and see where I am at. That's all for now..Thanks for the help..TommyJ

Copy on the fluid level..I will work on some other areas for now.

OK..Thanks for the info..Now, I said the tranny fluid level was good. Does it have to be all the way to the bottom of the hole. I checked it with my little finger, and touched fluid at the first bend of my finger. It appears that the capacity is not that much, so maybe it wouldn't take much to have it too low?

Another question..If I disconnect the solenoid what would happen to the shifting? Would I automatically start out in 4th, or would it shift from 3rd to 4th when I let off the gas? I was thinking if I disconnected the solenoid I could see if it remained in 4th, and rule the electric portion in or out? Thoughts? Thanks..TommyJ

Copy on the odometer. Yes, it pops out under very light pressure. I almost have to be going down hill for it to stay in high gear. I am not sure about the downshift in Low range. I will have to check that out. I will double check the wiring. Thanks

I bought the car at an estate auction. Mileage is 60,000 on the speedo. Oil change stickers seem to validate the mileage. Transmission level is also good. I am going to check the oil pressure next. The car seems to be an original.