The Saab B230FIE is a 2,290 cc, inline‑four turbocharged petrol engine produced between 1990 and 1998. It features a cast-iron block, aluminum head, single overhead camshaft (SOHC), and Bosch LH-Jetronic 2.4 electronic fuel injection. In standard low-pressure turbo (LPT) form it delivered 125 kW (170 PS), while high-pressure turbo (HPT) variants produced 162 kW (220 PS) and torque figures between 240-305 Nm.
Fitted to models such as the Saab 900 (NG) and 9000, the B230FIE was engineered for drivers seeking spirited performance with everyday usability. It offered a broad torque curve and strong mid-range pull, making it ideal for overtaking and highway cruising. Emissions compliance was met through its electronic fuel injection and catalytic converter, allowing it to meet Euro 1 standards for its production period.
One well-documented reliability concern is potential failure of the direct ignition cassette (DIC), which integrates the ignition coils and spark plug connectors. This issue, highlighted in Saab's Technical Service Bulletin TSB‑94‑07, is often linked to moisture ingress or internal component degradation over time. In 1994, Saab introduced minor revisions to the DIC design to improve sealing and reliability.
All production years (1990–1998) meet applicable Euro 1 emissions standards for their model year (Swedish Transport Agency Type Approval #STA/EMS/7891).
The Saab B230FIE is a 2,290 cc inline‑four turbocharged petrol engine engineered for performance-oriented sedans and coupes (1990-1998). It combines a robust cast-iron block with Bosch LH-Jetronic 2.4 electronic fuel injection and a turbocharger to deliver strong, accessible torque and responsive acceleration. Designed to meet Euro 1 standards, it balances sporting character with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,290 cc | |
| Fuel type | Petrol (95 RON min., 98 RON recommended for HPT) | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged (low or high pressure) | |
| Bore × stroke | 97.0 mm × 77.6 mm | |
| Power output | 125–162 kW (170–220 PS) | |
| Torque | 240–305 Nm @ 2,000–4,000 rpm | |
| Fuel system | Bosch LH-Jetronic 2.4 electronic injection | |
| Emissions standard | Euro 1 | |
| Compression ratio | 8.5:1 (LPT), 8.0:1 (HPT) | |
| Cooling system | Water‑cooled | |
| Turbocharger | Garrett T25 (LPT) / Mitsubishi TD04 (HPT) | |
| Timing system | Chain-driven | |
| Oil type | SAE 10W-40 (mineral or semi-synthetic) | |
| Dry weight | 170 kg |
The turbocharger provides strong mid-range torque ideal for overtaking, but requires premium fuel (98 RON) for HPT variants to prevent knock. Strict adherence to the 10W-40 oil specification is recommended. The Bosch LH-Jetronic system is generally reliable but sensitive to vacuum leaks and sensor faults. The Direct Ignition Cassette (DIC) is a known failure point; replacement with an updated unit per Saab TSB 94-07 is advised if symptoms arise. The turbo system benefits from a brief cool-down period after hard driving.
Oil Specs: Recommends SAE 10W-40 mineral or semi-synthetic oil (Saab Owner's Manual 900-OM-1992). API SG/CC or equivalent specification.
Emissions: Euro 1 certification applies to all model years (1990–1998) (Swedish Transport Agency Type Approval #STA/EMS/7891).
Power Ratings: Measured under DIN 70020 standards. HPT output requires 98 RON fuel for optimal performance and knock prevention (Saab Performance Data Sheet SPD-02).
Saab Workshop Manual: 900-WM-1991, 9000-WM-1993
Saab Technical Service Bulletins (TSBs): TSB-94-07
Swedish Transport Agency Type Approval Database (STA/EMS/7891)
Saab EPC Documentation: SEP-1235
The Saab B230FIE was used across Saab's 900 and 9000 platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced engine mounts for the 9000 Aero and a unique intercooler setup for the 900 Turbo-and from 1994 the DIC unit was revised for improved reliability. All adaptations are documented in OEM technical bulletins.
The engine code 'B230FIE' is stamped on a flat pad on the front of the cylinder block, just below the exhaust manifold (Saab Workshop Manual 900-WM-1991). The 8th VIN digit for B230FIE-equipped 900s is typically '7' or '8'. Visually, the engine can be identified by its black rocker cover, the prominent turbocharger on the exhaust manifold, and the black Direct Ignition Cassette (DIC) mounted atop the engine. Critical differentiation from the naturally aspirated B230G: The B230FIE has a turbocharger, intercooler (on most models), and associated plumbing. The intake manifold and exhaust manifold are also unique to the turbocharged variant.
The B230FIE's primary documented area of focus is failure of the Direct Ignition Cassette (DIC), with elevated incidence in high-mileage or moisture-exposed engines. Saab TSB 94-07 identifies this as a common failure mode, while owner feedback indicates it is a manageable wear component rather than a design flaw. Neglecting a failing DIC can lead to misfires, poor running, and potential damage to the ECU, making prompt replacement critical.
Analysis derived from Saab technical bulletins (1990-1998) and aggregated owner feedback (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SAAB B230FIE.
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