Standard Ignition TH277 throttle position sensor for the 1987-1989 Isuzu I-Mark 4-cylinder 1.5L and other vehicles tracks the position of the throttle body valve. It is made for high-mileage GM and Isuzu vehicles.
A failing throttle position sensor can show up as hesitation, an unsteady idle or a check engine light. Before you replace the sensor, rule out damaged wiring, a loose connector, a vacuum leak and a dirty throttle body, since those can cause similar symptoms.
This listing is one sensor. It is a direct-fit replacement for the 1987-1989 Isuzu I-Mark 4-cylinder 1.5L and the 1987-1988 Chevrolet Spectrum 4-cylinder 1.5L, and each takes one. It is calibrated to match OE performance.
Fit and size
Build and materials
Interchange: 2-19305
EC3107 · TPSB10073 · 94433186 · 8944331860 · SERA4848
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is the Standard Ignition TH277 throttle position sensor right for a 1987-1989 Isuzu I-Mark 4-cylinder 1.5L?
Yes. The Standard Ignition TH277 fits the 1987-1989 Isuzu I-Mark 4-cylinder 1.5L and the 1987-1988 Chevrolet Spectrum 4-cylinder 1.5L, with one sensor per vehicle.
How does this throttle position sensor handle heat and harsh conditions?
It is built with high-grade materials intended to protect against extreme temperature changes and exposure to damaging elements.
What connector and terminals does the TH277 sensor have?
The Standard Ignition TH277 has one plug-in female connector with four male blade terminals.
Can a worn throttle position sensor cause hesitation or a rough idle?
Yes, it can, because the sensor reports throttle valve position to the engine control unit. A wiring fault or a vacuum leak can look much the same, so a shop can test it.
Is 2-19305 a cross-reference number for the Standard Ignition TH277?
Yes. 2-19305 is on the interchange list for the Standard Ignition TH277 throttle position sensor, along with EC3107, TPSB10073, 94433186, 8944331860 and SERA4848.
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Standard Motor Products
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Standard Motor Products
Standard Motor Products
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.
