Parts for your 1989 Mitsubishi Pajero-Crank angle sensor

1989 Mitsubishi Pajero crank angle sensor – do you actually have one?

Short answer: for Australian and New Zealand–delivered 1989 Mitsubishi Pajero models, a separate crank angle sensor (CAS) isn’t used. The petrol engines of the day rely on a distributor with an internal magnetic pick‑up (reluctor) to generate the engine position signal for ignition, and the diesel variants use a fully mechanical injection pump with no electronic timing input. This setup is detailed in factory and aftermarket manuals that cover the model year and region, including the Mitsubishi Pajero/Montero 1983–1991 Factory Service Manual (Group 16 – Ignition, Group 13A – Engine Electrical), Gregory’s Mitsubishi Pajero 1983–1996 (No. 268), the Haynes Mitsubishi Montero/Pajero 1983–1995 Repair Manual (Engine electrical chapter), and the 1989 Montero/Pajero Electrical Troubleshooting Manual.

Why there’s no separate CAS on these trucks comes down to the tech of the time. The 2.6‑litre four and early 3.0‑litre V6 used a conventional distributor to both trigger ignition and distribute spark, so there was no need for a dedicated crankshaft position sensor on the block or timing cover. On the diesels (such as the 4D56T), fuelling and timing are mechanically governed inside the VE‑type pump, again removing the need for a CAS.

There is one wrinkle worth noting: some markets and later years moved to electronic fuel injection on the V6, where Mitsubishi integrated an optical or Hall‑effect “crank angle” signal inside the distributor body. If you’ve got a grey‑import or swapped engine/loom, you may indeed have a distributor‑mounted CAS. The Aussie/NZ 1989 vehicles, as covered by the manuals listed above, aren’t fitted with a standalone crank sensor at the crank pulley or bellhousing.

If you’re chasing what online threads call a “crank angle sensor” fault on a 1989 Pajero, it usually translates locally to issues with:

• Distributor pick‑up coil (reluctor) air gap or failure
• Ignition module (power transistor) and coil health
• Distributor shaft wear, cap/rotor condition, and base timing
• Earths, ageing connectors, and loom resistance under the bonnet

Good servicing practice on these rigs is to inspect the distributor pick‑up and wiring, check dwell/primary current as specified in the FSM, renew the cap, rotor and leads if they’re tired, and verify timing with the vacuum lines set per the manual. On diesels, keep the pump timing verified and belts in spec. That’s the way to sort “no CAS” complaints on a 1989 Pajero in our part of the world.

Popular questions

Does a 1989 Mitsubishi Pajero have a crank angle sensor?

No separate one. Australian/NZ 1989 petrol models use a distributor with an internal magnetic pick‑up to generate the timing signal, and the diesels are mechanically timed. The factory manuals for 1989 show no standalone CKP/CAS on the block or timing cover.

Where does the ignition timing signal come from on a 1989 Pajero?

From the distributor. The pick‑up coil (reluctor) inside the distributor creates the engine position signal, which the ignition module uses to trigger the coil. Keep the pick‑up air gap, distributor bearings, and cap/rotor in good nick for reliable spark.

What should be checked if there’s a “no spark” issue and people mention the CAS?

On a 1989 Pajero, check the distributor pick‑up coil resistance and output, the ignition module (power transistor), coil primary/secondary resistance, and all grounds. Also inspect the cap, rotor, and leads, and confirm base timing with a timing light.