designsltd

169,000 the rx seems to be producing good consistent rpms in first 3 gears...it will stay in 3rd gear and than the rpms just continue to rise as the speed increases...where typical the vehicle engine would be running @ 2,000 rpm at 60 mph now the engine pushes to 3500 rpm at 60 mph. you can tell it is at that point to "shift" but it does not and the only way to get to higher speeds is to continue to push engine rpm higher...which of course outs greater strain and gas consumption on the engine. right now at 2,ooo rpm in drive i am getting @ to speed @ 40 mph. both in auto and manual shift mode the car / engine seems to move through the L-2-D (1-2-3) shift gears w/o too much issue or problem but it will not go into O/D. If I engage or disengage the O/D switch it has no affect. any thoughts, insights or ideas as to the problem or solution? my o2 and air flow sensors , I believe are shot and in need of replacing (check engine light on and codes accordingly). This is the first and only significant issue I have had with the 2000 rx 300 since new original owner. please let me know as it is difficult to drive at low speeds and the starin on engine gas consumption at higher speeds is costly.

We have a 2000 rx 300 which recently will not shift into high (4th) gear/overdrive. It will shift in auto and manual thru 1-2-3 but will not shift out of 3rd gear into overdrive 4th . this occurred previously at one time, however the problem seemed to correct it self with in a short period of driving. Now more recently the transmission will not engage overdrive, when I execute the over drive button it has no affect to engage or disengage the transmission function. the rx 300 will shift through first 2 gears with out issue in auto and will manually shift 1-2-d into 3rd. but no shift into over drive. Any ideas out there as to the problem? a electronic issue? module? seems like it is some type of electronic module/sensor which affects the over drive selector.