Question about 2002 Nissan Xterra
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Posted on Jan 02, 2017
When was the last time the transmission was serviced? It should be serviced every 40,000 miles or so. I would think you should service it and make sure dirt & grime are not causing the shift solenoid or the valve in the valve body to stick
Posted on Dec 07, 2010
Hi, I hope this will help you , there is a part call the governor ,is on top of your transmision ,and looks like a distribuitor,,this have a plastic gear at the end of the shaft that wear out and dont let the transmition to shift ,,it have a ten mm bolt that holds it in place ,,,is a comon problem of nissan..... good luck.....
Posted on Aug 26, 2008
Electronic throttle assembly failure, which has throttle position sensor built into it, that is a sensor for the transmission and tells the computer where the throttle is to adjust/shift if needed. I would look into the throttle assembly.
Posted on Oct 15, 2008
juan: there is a cable which comes from the transmission to the throttle linkage. This is called the TV (throttle valve) cable. This is designed to work in conjunction with the position of the throttle. I'm sure you heard the term "KICK DOWN SWITCH". Well this essentially is doing the same thing. If the cable is out of adjustment, it will have a tendency to want to downshift into 3rd.
Even though overdrive is electrically actuated, it can be disengaged by the throttle position.
There is also a coolant temp sensor which keeps the transmission from shifting into overdrive until the coolant temperature reaches a certain point. The sensor tells the ECM to tell the Solenoid it's ok to supply a ground to it.
Your overdrive switch provides a ground to actuate the overdrive solenoid. Make sure the switch has a solid ground serving the circuit.
The torque converter solenoid picks up it's ground from the ECM.
Both solenoids are served by the same power source which is a switched circuit through the ignition.
I hope I have shed some new light on your problem and given you some new direction in which to look. I hope I have helped you resolve your problem. If not, I'll be watching and will be ready to offer more help if needed. ..mybunkey
Posted on Apr 16, 2009
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