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Parts for your 1987 Suzuki Jimny-Throttle position sensors
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1987 Suzuki Jimny throttle position sensor — is it actually a thing?
Short answer: no. On an Australian and New Zealand–spec 1987 Suzuki Jimny (sold locally as the Sierra SJ410/SJ413), a throttle position sensor (TPS) isn’t fitted and isn’t part of normal servicing. Those models ran a conventional carburettor with mechanical/vacuum controls and had no engine control unit to read a TPS. So “throttle-position-sensors” aren’t relevant to a 1987 Jimny in this market.
This conclusion matches the factory and aftermarket technical literature for the period, which document a carburetted induction system and no TPS on 1980s Jimny/Sierra models. TPS appears later with electronic fuel injection (EFI) on early-1990s variants (e.g., JA11 in Japan) rather than on 1987 vehicles.
- Suzuki SJ410/SJ413 Service Manual (1984–1989): Carburettor fuel system, no TPS listed in specifications or diagnostics.
- Gregory’s Service and Repair Manual No. 513 — Suzuki Sierra 1982–1998: Carburettor on 1980s models, EFI and TPS discussed only on later 1990s variants.
- Haynes Manual 0635 — Suzuki SJ410 & SJ413 1982–1994: Carburettor fuel system for 1980s models, TPS appears with later EFI-only sections.
- Suzuki Jimny JA11 EFI Workshop literature (early 1990s): Identifies throttle position sensor on EFI throttle body, not applicable to 1987 carb models.
Why wasn’t a TPS used in 1987? The carburettor meters fuel mechanically via jets, an accelerator pump and vacuum-operated circuits. Ignition timing is handled by mechanical/vacuum advance in the distributor. With no ECU in charge of fuelling or spark maps, there’s nothing that needs a real-time throttle-angle signal.
What should owners service instead? For throttle feel and response on a carb Jimny, it pays to check throttle cable free play and lubrication, carburettor cleanliness and idle mixture, accelerator pump operation, vacuum hoses for leaks and perishing, throttle shaft/bush wear, fuel filter condition and base ignition timing. If someone says the “TPS” has failed on a 1987 Jimny, they’re almost certainly chasing the wrong part — look to carburettor and ignition basics first.
- Popular questions about 1987 Suzuki Jimny throttle position sensors
Does a 1987 Suzuki Jimny have a throttle position sensor?
No. The 1987 Jimny/Sierra in AU/NZ is carburetted and doesn’t use a TPS. Throttle-angle feedback arrives with later EFI models, not with the 1987 setup.
My 1987 Jimny hesitates off idle — could that be the TPS?
On a carb model, hesitation is more likely the accelerator pump not squirting cleanly, a vacuum leak, gummed-up jets, stale fuel or incorrect ignition timing. There’s no TPS to fail on this year, start with a carb clean and a basic tune.
Can a TPS be added by fitting EFI to a 1987 Jimny?
Yes, but only as part of a full EFI conversion (loom, ECU, sensors, high-pressure pump and return line, throttle body/injectors). It’s not a simple bolt-on, and local engineering/roadworthy requirements should be checked in Australia or New Zealand.
