Standard Ignition TH287 throttle position sensor for the 1990-1994 Lexus LS400 V8 4.0L and other vehicles reports throttle valve position to the engine control unit. It is tested and calibrated to match OE performance.
Hesitation, an uneven idle or a check engine light can come from a worn throttle position sensor, but a loose or corroded connector may be behind them too. Look over the connector and wiring for damage or corrosion with the engine off first.
This listing is one sensor, designed specifically for high mileage Lexus vehicles. It is a direct-fit replacement for the 1990-1994 and 1996-1998 Lexus LS400 V8 4.0L and the 1992-1997 Lexus SC400 V8 4.0L, with one sensor per car.
Fit and size
Build and materials
Interchange: 2-16694
EC3227 · 8945250010 · TPS4179 · 8945250020
This part cross-references / interchanges with the following part numbers:
Does this throttle position sensor fit the 1996-1998 Lexus LS400 V8 4.0L?
Yes. Standard Ignition TH287 fits the 1996-1998 Lexus LS400 V8 4.0L, and that engine takes one sensor.
How many terminals does the Standard Ignition TH287 connector have?
The connector has four male blade terminals. It is a female plug-in connector, and this sensor uses one.
Can a failing throttle position sensor cause hesitation or an uneven idle?
It can, because the sensor reports throttle valve position to the engine control unit. A shop can test the sensor's signal to find out.
Does TH287 replace the 8945250020 number?
Yes. 8945250020 is on the interchange list for Standard Ignition TH287, along with 8945250010, 2-16694, EC3227 and TPS4179.
Is Standard Ignition TH287 tested to match OE performance?
Yes. This throttle position sensor is tested and calibrated to match OE performance, and its materials are chosen to protect against extreme temperature changes.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
