Description
Factory Porsche 944 Workshop Manual (1982–1991)
This factory-level service manual covers every Porsche 944 produced between 1982 and 1991, giving US owners and independent technicians the complete procedural and electrical documentation needed to maintain or rebuild these iconic front-engine, rear-transaxle sports cars.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.5L M44/01–M44/08, 2.5L M44/09–M44/10, 2.5L M44/40 (16v S), 3.0L M44/41 (S2) |
| Diesel | N/A |
| Transmissions | 5-speed manual, 3-speed automatic (rear-mounted transaxle) |
| Drive | RWD |
| Model Years | 1982–1991 |
| Badge Twins | N/A |
Common 944 Repairs Covered
| System | Procedures |
|---|---|
| Timing Belt & Balance Shaft Belt | Replacement intervals, tensioner inspection, and full re-timing procedures for the M44 interference engine |
| DME Fuel Injection | Bosch LH-Jetronic/DME diagnostics, injector testing, throttle position sensor calibration |
| Clutch & Torque Tube | Clutch disc and pressure plate replacement, torque tube bearing inspection and rebuild |
| Cooling System | Water pump replacement, thermostat service, coolant flush, and radiator hose inspection procedures |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
How critical is the timing belt service on the 944’s M44 engine?
Extremely critical. The M44 is an interference engine, meaning a broken timing belt or balance shaft belt will cause piston-to-valve contact and catastrophic engine damage. This manual provides complete replacement intervals, belt routing diagrams, and tensioner torque specs to help you perform this service correctly on all 2.5L and 3.0L variants.
Does this manual cover the 944 S and 944 S2 variants?
Yes. All three main naturally aspirated variants are fully documented — the base 944 with M44/01–M44/10 engines, the 944 S with the 2.5L 16-valve M44/40, and the 944 S2 with the 3.0L M44/41. Both coupe and cabriolet body configurations are included across the 1982–1991 production span.
Are wiring diagrams and DME electrical schematics included?
Yes. The manual includes complete electrical schematics covering the Bosch DME engine management system, ignition and fuel injection circuits, climate control, power windows, central locking, and instrument cluster wiring. Connector pinouts and ground point locations are documented throughout.
What format is the manual?
This manual is delivered as a PDF file. It is fully searchable, printable, and compatible with Windows, Mac, iOS, and Android devices using any standard PDF reader.
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