This is strange. I did a simple drain and refill (drain plug only - did not drop the pan) of my 1998 JDM LC100 VX (HDJ101K) and now it doesn't seem to want to up-shift into overdrive on the freeway. At 60-65 mph (~105 km/hr) I'm seeing 2100 RPM, when previously it was around 1400 RPM in that scenario. (This is for the 4.2L 1HD-FTE turbo diesel; hence the lower RPMs).
The transmission fluid levels are spot on at the top mark of both the cold & hot ranges on the dipstick. Not over or under-filled, in other words. The transmission worked perfectly before this simple drain & refill so I'm mystified as to what could be happening.
Any ideas? Any other 1HD-FTE owners out there? If so, what RPMs are you seeing at freeway speeds?
The transmission fluid levels are spot on at the top mark of both the cold & hot ranges on the dipstick. Not over or under-filled, in other words. The transmission worked perfectly before this simple drain & refill so I'm mystified as to what could be happening.
Any ideas? Any other 1HD-FTE owners out there? If so, what RPMs are you seeing at freeway speeds?