98 Nissan Pathfinder RPM problem

SUV123
Tue, 26 Apr 2011 20:20:02 +0000
Maintenance/Repairs

I have an auto transmission 98 nissan pathfinder that I bought brand new way back (in 1998 of course) that seems to have problems shifting into higher gears. When I’m going on a level hwy, I’ll get going to 70mph and see the engine rev to 4000 rpm’s. It’ll stay there for a while (minutes to 10’s of minutes). Then the engine will shift to a higher gear and the rpm goes to 2500. Then it shifts back so rpm is 4000. This happens back and forth unpredictably. When it’s reving at 4000 rpms I tried letting my foot off the gas and the rpm’s drop to less than 1000 like there’s no load the transmission. Then I press the gas pedal again and the rpm jumps back to 4000 rpm’s. I’ve had the transmission checked a few times and found nothing. I’ve changed the transmission fluid, had a major tune up, changed the timing belt, but it still happens. People keep telling me it must be happening on a slight grade but, no, it’s on a flat road. There is no ‘problem light’ that appears either (like a check engine light). I’ve driven many other cars and they don’t do this. I’m at my wits end trying to figure this out. You guys are my last resort.

13 posts - 3 participants