L Driveshaft in 1991 Honda Civic DX Transmission

It sounds like a common problem I have had when replacing those axles. It can be pretty agravating.

First let me ask why you are replacing so many parts? Is this a super high mileage car? Why did you take it all appart without a system to know where they went back?

Aside from that I would pay critical attention to the splines on the inboard ends. Do you have the old ones to compare with? Yes, try slipping the other side in to see if it works in that gear.

When examining the splines check for burs and/or flattened spots from dropping or banging. Also ascertain that they are indeed the same (as in number and shape) as the old ones. If you don't still have the old ones at least compare the right and left.

If all that looks good and you know that the axle from the other side will work in that gear, then reinstall the problem axle and the other axle and have some one hold the other axle or apply a pair of vice grips to that shaft so that you can hold it with your other hand. Now try aligning the problem axle. If you haven't buggered the splines in the diff gear from your previous attempts you should be able to find a sweet spot.

Thanks to all who replied. The problem was a loose shift rod which slipped out of position and blocked the L drive shaft. Technician apparently did not properly tighten the relevant bolts when it was reassembled. Drive shaft splines in perfect condition; split rings are new.

This is a well maintained one owner car whose owner wanted to maximize future utility in lieu of buying a new car. Vehicle has been highly reliable and gets 40 MPG. The engine was rebuilt because of piston slap (cold only) and oil burning ~ 1 qt per 3K miles: engine was bored 0.5mm, new pistons and rings installed and all new bearings, plus all new valves and exhaust guides; new clutch and pressure plate installed. Owner requested all transmission seals and bearings be replaced at same time.

Dennis Waller

Foreign Auto Service