md1m

Just an update to this. My transmission is working just fine. Had 3 transmission shops tell me it was ready to fail and I needed a 3k-4k rebuild. Over 3 years now since I "lost reverse". Still works perfectly in forward gears, and if there's ever a time where it doesn't want to go into reverse, I discovered that I can shift to neutral, then up to reverse and it will catch every time. So heading toward 300k with original engine and transmission working fine

My vehicle will only go into reverse first thing in the morning. Once I've driven it will not engage reverse. I posted about this issue two years ago, and asked a few "car people" and had a transmission shop look at it. Everyone told me the transmission was about to fail and I needed to get it replaced or rebuilt. Fast forward to today, and I still use the vehicle as my daily driver. It drives and shifts perfectly when going forward. I bought a new transmission filer and was planning on having that replaced. Could it be something like a solenoid that I could have transmission shop test when they drop the pan? My plan has been to rebuild the transmission when I started having problems with forward gears but since it continues to drive perfectly in forward I keep thinking there could be a fix to my reverse problem other than a rebuild.

Looks like my 2003 Pathfinder SE Auto 2wd will need transmission repair in the future. Won't go into reverse after it's warmed up but forward gears are fine. Wanted to get opinions on approx value before I decide if I want to rebuild transmission eventually. It's a 2003 Pathfinder SE 2wd auto with 258k. I'm in Central TX so it has never seen snow or ice - zero rust. I am the only owner and have babied it from day one. Have a thick folder of all the maint going all the way back to the window sticker from when I bought it. Has never been off road. I'm meticulous about maint, so has had oil changes, fluid changes, etc. Even replaced the fuel filter. Has had everything replaced that you would expect including new radiator, AC system, spark plugs and coil packs, etc. Replaced upper and lower control arms (not just bushings) when it started to wobble. Keep in the garage so the paint is in great condition. Engine is smooth. Can take pictures if I do decide to sell but really just trying to get an idea of what it might be worth at this point. I want to rebuild transmission and keep but only if it makes sense. I can't do transmission work myself.

Reverse will engage when fluid is cold, but once it's warm I have no reverse. I'm going to do a pan drop and change the transmission fluid and replace the filter. Then have a transmission shop look to see if it might be something like a solenoid. But if it's something major, I could easily continue to drive it around town without reverse. I've done it for a few weeks and haven't had a problem. Has anyone driven their vehicle for a significant length of time without reverse gear? If the reverse can't be fixed, I'm wondering if I can just drive it until the forward gears start to fail. The forward gears are still shifting like new. I am only driving it 3k-5k miles a year as it's our "extra" vehicle. Has 255k miles but is still in excellent condition.

I have a 2003 Pathfinder with 257k. Had a P0420 and installed new o2 sensors (upstream and downstream on bank 2). Also ended up installing new coil packs for all cylinders because I had two prior misfires, and all coil packs were original, so decided to just put in all new ones. The new o2 sensors worked for a while, but the P0420 came back so I put a spacer on the o2 and cleared the code and it has remained cleared. Assuming it stays off, does this seem to indicate it's probably the cat? I know it can be other things, but just wondering if it's most likely the catalytic converter. I'm putting on maybe 250 miles a month now, and even pre covid was only driving 500/month, so not wanting to do more than I have to.