Pump vs PD engines

All four share a cast-iron block, aluminium head, SOHC 8-valve layout, timing belt, variable-nozzle turbo and intercooler. Firing order: 1–3–4–2.

Pump engines

ALH · Rotary-pump injection

ALH

ALH 1.9 TDI · Rotary pump

Specification	ALH
Capacity	1,896 cc
Bore × stroke	79.5 × 95.5 mm
Compression	19.5:1
Power	90 hp @ 3,750 rpm
Torque	155 lb-ft @ 1,900 rpm
Injection	Bosch VP37 rotary pump
ECU	Bosch EDC15 family
Oil approval	VW 505 00

PD engines

Pumpe-Düse · BEW / BRM / BHW

BEW

BEW 1.9 TDI · Pumpe Düse

Specification	BEW
Capacity	1,896 cc
Bore × stroke	79.5 × 95.5 mm
Compression	19.0:1
Power	100 hp @ 4,000 rpm
Torque	177 lb-ft @ 1,800–2,400 rpm
Injection	Cam-driven unit injectors
ECU	Bosch EDC16 family
Oil approval	VW 505 01

BRM 1.9 TDI · Mk5 Jetta

Specification	BRM
Capacity	1,896 cc
Bore × stroke	79.5 × 95.5 mm
Compression	18.5:1
Power	100 hp @ 4,000 rpm
Torque	177 lb-ft @ 1,800–2,400 rpm
Injection	Cam-driven unit injectors
ECU	Bosch EDC16 family
Oil approval	VW 505 01

BHW 2.0 TDI · Passat

Specification	BHW
Capacity	1,968 cc
Bore × stroke	81.0 × 95.5 mm
Compression	18.5:1
Power	134 hp @ 4,000 rpm
Torque	247 lb-ft @ 1,900 rpm
Injection	Cam-driven unit injectors
ECU	Bosch EDC16 family
Oil approval	VW 505 01

Check the handbook for oil approval and any approved alternative.

Vehicles by engine code

U.S./Canadian model-year coverage; emissions-market availability differs. The 2005 Jetta spans two generations. Confirm the engine code before using a timing-belt kit, injector, ECU or oil specification.

Common faults & maintenance

• Timing belt. Use the model-year-specific interval and inspect the complete drive. Replace the required rollers, tensioner and one-time-use hardware correctly; a belt failure can cause valve-to-piston contact.
• PD cam and lifter wear. Inspect the camshaft and lifters when there is abnormal tapping, misfiring or reduced performance. Incorrect oil approval and neglected service increase wear risk.
• BHW oil-pump drive. Inspect the balance-shaft/oil-pump drive and repair history. A drive failure can remove oil pressure; shut the engine off immediately if the pressure warning appears.
• Intake, boost and fuel leaks. EGR/intake deposits, vacuum leaks, sticking turbo vanes and airflow-sensor faults can all reduce power. Check ALH pump seals and PD tandem-pump/injector sealing when leaks or starting problems occur.