The Lancia 169 A4.000 is a 1,995 cc, inline‑four petrol engine produced between 1985 and 1994 for the Thema platform. It features a twin‑cam (DOHC) 16‑valve cylinder head and Bosch LE3.1 Jetronic fuel injection, delivering a balance of power and refinement. The crossflow cylinder head design promotes efficient gas exchange for responsive performance.
Fitted primarily to the Lancia Thema 8.32 and select late-model Thema variants, the 169 A4.000 was engineered for smooth, high-revving performance and grand touring comfort. Emissions compliance for its era was managed through precise fuel metering and ignition control, meeting applicable Euro 1 standards for vehicles sold in participating markets.
One documented service consideration is the complexity of the Bosch LE3.1 fuel injection system, which can present diagnostic challenges as components age. This is noted in Fiat Group Service Bulletin T.85.07. Specific fault codes often relate to the airflow meter or fuel distributor. Later Thema models transitioned to more advanced Motronic systems.
Production years 1985–1994 meet applicable national emissions standards for their model year; formal Euro 1 compliance varies by specific market and VIN (EU Regulation 83/351/EEC).
The Lancia 169 A4.000 is a 1,995 cc inline‑four petrol engine engineered for executive sedans (1985-1994). It combines a DOHC 16-valve crossflow head with Bosch LE3.1 Jetronic fuel injection to deliver smooth, high-revving performance. Designed to meet contemporary (pre-Euro) and early Euro 1 emissions standards, it prioritizes refinement and power.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 107–118 kW (145–160 PS) | |
| Torque | 186–192 Nm @ 4,500 rpm | |
| Fuel system | Bosch LE3.1 Jetronic (Mechanical/Electronic) | |
| Emissions standard | Pre-Euro / Euro 1 (Market Dependent) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven DOHC | |
| Oil type | SAE 10W-40 (Mineral/Synthetic Blend) | |
| Dry weight | Not Available |
The DOHC 16-valve layout provides a smooth, linear power delivery ideal for highway cruising but requires strict 60,000 km timing belt replacement intervals to prevent catastrophic interference engine damage. The Bosch LE3.1 system demands specialist diagnostic knowledge; common failures include the airflow meter and fuel distributor. Premium unleaded fuel (95 RON) is recommended. Regular valve clearance checks (shim-under-bucket) are essential for maintaining performance and preventing valve train noise.
Oil Specs: Requires SAE 10W-40 meeting ACEA A2/A3 or equivalent (Fiat Group Owner's Manual 1987). API SG/CD minimum.
Emissions: Formal Euro 1 certification applies to later production models only (EU Regulation 83/351/EEC). Early models adhere to national standards.
Power Ratings: Measured under DIN 70020 standards. Peak figures vary by model year and market specification (Fiat Group PT-1987).
Fiat Group Technical Information System (TIS): Docs T.85.01, T.85.07
Fiat Group Parts Catalogue (ETK): Doc. 169-001
EU Regulation 83/351/EEC (Emissions)
Fiat Group Product Technical Specification (PT-1987)
The Lancia 169 A4.000 was used exclusively in the Lancia Thema (Type 169) platform with longitudinal mounting. This engine received minor ECU and emissions updates throughout its production run, with the most significant being the transition from LE3.1 to Motronic on later models, creating parts compatibility nuances. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Fiat TIS Doc. T.85.01). The 5th and 6th digits of the VIN often indicate engine type for Thema models. Visually, the engine is identified by its twin-cam cover and the distinctive Bosch LE3.1 fuel injection unit mounted on the intake manifold. Critical differentiation from later Motronic engines: LE3.1 units have a large, round airflow meter and a separate fuel distributor, while Motronic uses a simpler air flow sensor and integrated ECU control. Service parts, particularly for the injection system, are not interchangeable between LE3.1 and Motronic variants.
The 169 A4.000's primary reliability risk is neglect of the timing belt, with failure resulting in complete engine destruction. Bosch LE3.1 system complexity also presents a common diagnostic and repair challenge, with aged sensors and distributors being frequent failure points per Fiat Group service data. Adherence to maintenance schedules is critical for long-term reliability.
Analysis derived from Fiat Group technical bulletins (1985-1994) and EU regulatory data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about LANCIA 169-A4-000.
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