Parts for your 1997 Mitsubishi Pajero-Camshaft sensor

1997 Mitsubishi Pajero camshaft sensor: what’s fitted and what it does

Based on factory technical literature and recognised data sources, a camshaft sensor is used on most 1997 Mitsubishi Pajero petrol models, but generally not on the 2.8‑litre 4M40 turbo‑diesel. The 1997 Pajero/Montero Factory Service Manual (Engine Electrical, Group 13A) and Mitsubishi ASA/CAPS parts listings show a camshaft position sensor (also called a cam angle sensor) on 6G72/6G74 V6 petrol engines. On 6G72 SOHC variants it’s integrated within the distributor assembly, while 6G74 DOHC versions use a separate sensor mounted on the cylinder head. In contrast, the 4M40 diesel workshop manual details crank and injection‑pump timing sensors, with no dedicated camshaft position sensor. Independent references such as Autodata and Bosch ESI likewise list a CMP for petrol Pajeros of this year, but not for the 2.8 diesel. So for a 1997 Pajero, whether a camshaft sensor is present depends on the engine fitted.

On petrol‑powered 1997 Pajeros that do run a camshaft sensor, the part’s job is to tell the ECU which cylinder is on the firing stroke. That lets the ECU deliver sequential fuel injection and time ignition spot‑on, improving cold starts, throttle response and emissions. If the sensor signal is missing or flaky, the ECU may revert to batch firing and default timing, which can mean rough running, poor economy and a glowing check‑engine lamp.

There’s no set replacement interval for these sensors, but they live a hard life under the bonnet. Heat, oil vapour and vibration can age the internal electronics and seals. Sensible servicing is to inspect the harness and connector at each major service, make sure the plug seals are intact, and keep oil leaks from the rocker covers in check so they don’t soak the sensor. If fault codes point to the cam sensor (common codes include P0340/P0341) or there are symptoms like hard starting, misfires at light throttle, or intermittent stalling, it’s time to test and likely replace.

Replacement is straightforward with basic spanners. Disconnect the battery, locate the unit (inside the distributor on 6G72 SOHC, or on the cylinder head near the cam gear on 6G74 DOHC), unplug, remove the retaining fasteners, and swap in a quality sensor. Lightly oil any O‑ring, route the loom away from hot manifolds, and refit. Afterward, clear codes and perform an idle relearn if required. A quick road test over a few kilometres should confirm smooth running and no new fault codes. When choosing parts, stick with reputable brands and match by VIN/engine code to avoid fitment mix‑ups between the petrol and diesel variants.

• Typical signs of trouble: hard or no start, uneven idle, misfire, poor fuel economy, check‑engine light.
• Preventative tip: keep connectors clean and dry, fix oil seepage that can contaminate the sensor.
• After replacement: clear DTCs and check live data to confirm a clean cam signal.

FAQs

Does a 1997 Pajero 2.8 diesel have a camshaft sensor?
Most 2.8‑litre 4M40 turbo‑diesels don’t use a separate camshaft position sensor. They rely on a crank sensor and timing inputs from the electronic injection pump for synchronisation. That’s why petrol and diesel listings differ for this year.

Where is the camshaft sensor on a 1997 Pajero petrol V6?
On the 6G72 SOHC V6 it’s built into the distributor housing. On the 6G74 DOHC V6 it’s a standalone sensor mounted on the cylinder head near the cam gear. Always verify by engine code before ordering parts.

Is it safe to drive with a failing camshaft sensor?
It might run, but it can stumble, use more fuel, and stall at awkward moments. Best bet is to diagnose and replace promptly to keep the Pajero reliable and compliant with emissions requirements.