nujeepguy, sounds like yours is slightly gummed up inside based on what I've read on this forum.

 

Just remembered another characteristic the dirty NSS on my XJ had. Actually it turned out to be the first symptom. My trans when in the 1-2 position would shift out of 1 into 2 almost immediately. Thought it was normal. After cleaning it now will stay in 1 until 4k rpms which is how it should be.

 

the switch wiring shows all contacts open in drive. how does the tranny know to shift. contacts shown where shift lever is i guess?

i looks like while driving, all contacts are open?

 

this info

 

where is that great thread showing how to clean and lube??

 

There are two different connectors depending on the year. Not sure when they switched, but my 97 has this one.

 

thanks, there was a detailed disassmbly, clean and assemble thread i cant find

 

heres a dumb suggestion strictly to clarify the tranny operation.

since all contacts are open in drive position, the switch does nothing?
so just unplug it and jump the neutral contacts so it would start,,ANYWHERE. or use screwdriver trick!
would the tranny shift normally?

you could still go to park to start safe. probably need rev closed to back up huh?

 

"where is that great thread showing how to clean and lube?? "

This'll work:
http://www.xjtalk.com/showthread.php?t=1747

 

Starting in '97, the transmission range sensor (NSS) had a contact for drive. The FSM continuity checks chart is wrong.


Here's the correct continuity chart (for 97-01) that I made (D3 is 3rd gear):





And the inside of the 97-01 TRS showing the D (Drive) contact. Contact #3 is power in.





Pre 97 TRS (no D contact):

 

and wondering!!!

 

P0705-RANGE SENSOR


When Monitored: Continuously with the key on.


Set Condition: No Transmission Range Sensor signals are received or two conflicting signals are received from the Transmission Range Sensor at the same time by the TCM.




POSSIBLE CAUSES


PCM PARK/NEUTRAL DTC’S PRESENT


INTERMITTENT WIRING AND/OR CONNECTORS


FUSED IGNITION SWITCH OUTPUT OPEN OR HIGH RESISTANCE


TRS 1-2 SENSE CIRCUIT OPEN


TRS 3 SENSE CIRCUIT OPEN


TRS OVERDRIVE SENSE CIRCUIT OPEN


TRS REVERSE SENSE CIRCUIT OPEN


TRS 1-2 SENSE CIRCUIT SHORTED TO GROUND


TRS 3 SENSE CIRCUIT SHORTED TO GROUND


TRS OVERDRIVE SENSE CIRCUIT SHORTED TO GROUND


TRS REVERSE SENSE CIRCUIT SHORTED TO GROUND


TRS 1-2 SENSE CIRCUIT SHORTED TO VOLTAGE


TRS 3 SENSE CIRCUIT SHORTED TO VOLTAGE


TRS OVERDRIVE SENSE CIRCUIT SHORTED TO VOLTAGE


TRS REVERSE SENSE CIRCUIT SHORTED TO VOLTAGE


TRANS RANGE SENSOR-SENSE CIRCUIT


TCM-TRS SENSE CIRCUIT INPUTS

 

its clear i dont understand the full reason for this sw. its not just so i can only start safe in park/neut!!
the shifter does something inside the tranny,im used to that. how important is this sw in the tranny operation.
seems like it wont work without it or it would be ez to handle start in park huh?
where can i read about it.?

btw my first "guess" is that my prob is in the sw??

 

Are you really Bimmer?

 

Have you tried bypassing the NSS to see what that does? (Temporarily of course)