Transmission / Suspension Specific Aid

Yesterday my SD suddenly started not shifting beyond second gear. In addition, it remains in 1/2 regardless of where the gearshift lever is placed, including reverse, but does not lock up the drive train, i.e., it is not actually shifting into reverse. As a result I am surmising that this is a valve body issue rather than a gear train one. Has anyone experienced this before? If so, what was the solution?

Thank you in advance

Conrad Blaschczyk

Everything on my car works great except the auto trans and I am by passing that problem by shifting manually.
Question to you "am I doing any damage" by not allowing trans to shift automatically?
Right now, 1st gear shifts out quickly below 10mph, 2nd shifts at 18mph with a huge flair and 3rd shifts a little firm.
What I have been doing is keeping 1st in gear until 17mph (high revs)then manually shifting to 2nd and the shift is smooth as can be! Shift into 3rd manually is around 35mph (high revs)also smooth as silk and then we are off to the races and as long as it's in high gear it will run all day without any problem.
What is your take on what I'm doing as far as future problems being created.

Hi all, my 1984 with 179,000 miles clocked had a litte wet spot under her rear-end today after we went for a cruise. I got underneath her and there was evidence of oil being slung around on the underbody. It was concentrated on the passenger side of the differential but hard to pinpoint. It didn't look like either of rubber boots were cracked so I am leaning towards the axle seal on the differential. Does it sound like I am going in the right direction? Looks like one of those cheap-part-lotta-labor type jobs. Thanks, Mike

Can the flex discs be replaced without removing the drive shaft? Do you sell the discs with instructions to fit this car?