| Setting the voltage to .45v will not necessarily be correct. You need to get the "sweet spot" of voltage and Hard Idle Switch just coming on when voltage is between .4 and .5V not necessarily at .45v - see below. From: [ http://z32.wikispaces.com/Throttle+Position+Sensor ] Consult Interface The best way to set the TPS is to use a Consult interface such as Nissan DataScan or conzult. This allows you to quickly and easily see both the voltage of the Throttle Sensor and condition (ON or OFF) of the Hard Idle Switch.
After loosening the two small screws holding the TPS to the driver's side throttle body, rotating it will change the states of the two sensors. Rotating it clockwise lowers the Throttle Sensor's voltage, and rotating it counter-clockwise increases it.
There is a "sweet spot" found while rotating the TPS where the Hard Idle Switch will turn on WHILE the Throttle Sensor reads between .4v and .5v. A common method of failure for the TPS appears where these two requirements cannot be met at the same time. That is, it can be set to show voltage between .4v and .5v, but the Hard Idle Switch shows off. If it's set to a position where the Hard Idle Switch turns on, the Throttle Sensor won't be in the proper voltage range (often around .3v). Owners will often set their TPSs to in the ~.4v-.5v range, but without the Hard Idle Switch being on, the car will idle high (between 1500RPM and 2000RPM). If you're unable to get the TPS voltage and hard idle switch to their "sweet spot," try this: Rotate the TPS so that the TPS voltage is reading between 0.4 to 0.5v.
Unplug the gray oval TPS connector for several seconds. You should be able to see the voltage (as displayed via consult) rise. After about ~8 seconds, the hard idle switch should display "on"
Reconnect the gray oval TPS connector.
Another, less common method of failure is one where the Throttle Sensor "track" becomes dirty. This causes the voltage to have "dead spots", which can present itself as hesitation or bucking while driving.
ZUL8TR in Orlando,FL |
