Newly rebuilt 2008 nissan altima transmission with problems

March — better drive — the Altima back to the shop and have them look for a transmission fluid leak. You shouldn’t be having the problems you are having and the only way they can be happening is if there a drop in the transmission fluid level.

How could a drop in the transmission fluid have occurred in three weeks? There’s really only one or two ways. When the shop buttoned up the case on the rebuilt they forgot to run a bead of gasketing material along the transmission pan cover when they put it back on. The result is that there is a micro-leak occurring and the fluid level is dropping.

Alternatively, they may have cross-threaded the transmission fluid drain plug when they pug it back in and there is a very fine leak of fluid running down the misaligned thread. I’d suggest looking under the Altima for a red fluid stain or puddle which would indicate there is a leakage problem.

Another area to look at is the transmission radiator hoses — the ones cirulating anti-freeze/coolant around the tranny in the water jacket and taking the heat away from the already-hot unit (the transmission is one of the biggest heat-generators on your Altima). Be sure the hose clamps are snugged up correctly and that the hoses aren’t cut or otherwise degraded.

If everything looks okay here, I’d suggest there might be a misaligned input or output shaft or one of the half-shafts is out of alignment. Each case can result in leaks in your recently repaired Nissan.

Since the repair was done a few weeks ago, the shop should have already warrantied the work so you won’t have to lay out any money. I hope this helps. Let me know.