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Parts for your 1992 Nissan Primera-Throttle position sensors
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1992 Nissan Primera Throttle Position Sensor (TPS): purpose, servicing and replacement
Based on authoritative technical references, the 1992 Nissan Primera (P10, GA16DE and SR20DE engines) is fitted with a throttle position sensor on the throttle body. The Nissan Factory Service Manual for the P10 (Engine Control – EC section) specifies TPS testing and adjustment, and Nissan FAST/EPC lists the TPS under the 22620-xx series for these engines. Independent data sets such as Autodata and the Haynes Nissan Primera Service &, Repair Manual (1990–2002, No. 3506) also document the TPS and its role in fuel and ignition control. So yes—this model absolutely uses a TPS.
The TPS tells the ECU exactly how far the throttle is open, so fuelling, ignition timing and idle control behave as they should from idle to wide open throttle. On automatic-transmission cars, the TPS signal is also used by the transmission control to fine-tune shift timing and kickdown. A healthy, correctly adjusted sensor makes the car feel crisp off the line and smooth in traffic, while keeping fuel economy on song for long Kiwi and Aussie kilometres.
Common signs the TPS needs attention include:
- Hesitation, flat spots or surging on light throttle
- Unstable idle or stalling when coming to a stop
- Harsh or oddly timed shifts on autos
- Higher fuel use and a stored ECU fault code (OBD1)
As part of routine servicing, it’s worth cleaning the throttle body (keep solvents away from the TPS itself), inspecting the TPS connector for green corrosion, and checking the harness for brittle insulation. On these Nissans, the TPS often combines an idle switch with a potentiometer, correct base setting is important. With a multimeter on the signal and earth pins, the closed-throttle voltage should be steady and rise smoothly as the throttle opens. If adjustment is needed, the sensor’s slotted mounting allows a small rotation to dial it in—follow the EC section procedure in the service manual.
Replacement is straightforward with basic tools:
- Disconnect the battery and remove the intake duct for access.
- Unplug the TPS, note or mark its current position, and remove the two mounting screws.
- Install the new sensor, aligning the tang with the throttle shaft, lightly snug the screws.
- Calibrate: rotate the TPS to the specified closed-throttle setting (use a multimeter per the FSM), then tighten.
- Reconnect, clear any stored codes, and road test for smooth tip-in and stable idle.
If the ECU still flags a fault after replacement and calibration, check for vacuum leaks, a sticky throttle plate, or wiring issues under the bonnet before condemning the new part.
FAQs
Where is the TPS on a 1992 Nissan Primera?
The TPS sits on the side of the throttle body, opposite the throttle cable cam. It’s a small black sensor with a two- or three-pin connector and two mounting screws in slotted holes for adjustment.
What are the typical symptoms of a failing TPS on the P10?
Owners commonly notice a shaky idle, hesitation off idle, surging at steady cruise, poor fuel economy, or clunky shifts on autos. The ECU may store a TPS-related fault code on these OBD1 cars.
Does the TPS need calibration after fitting?
Yes. After installation, the TPS should be rotated in its slots to achieve the specified closed-throttle setting, confirmed with a multimeter. Skipping calibration can leave the car idling poorly and shifting badly.
