The fourth generation of the highly popular Transporter minibus was equipped with a 2.4-liter VW AAB or T4 2.4 diesel engine, which was manufactured between 1990 and 1998. This motor was given the AJA index following an update to stricter environmental regulations.
AAB, AJT, ACV, AXG, BAC, BPE, AXD, AXE, AJS, and AYH are also included in the EA153 series.
Specifications
| Production years | 1990-1998 |
| Displacement, cc | 2370 |
| Fuel system | prechambers |
| Power output, hp | 78 |
| Torque output, Nm | 164 |
| Cylinder block | cast iron R5 |
| Block head | aluminum 10v |
| Cylinder bore, mm | 79.5 |
| Piston stroke, mm | 95.5 |
| Compression ratio | 23.0 |
| Features | SOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.5 |
| Fuel type | diesel |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for VW Transporter 1994) — city — highway — combined |
12.4 7.8 9.4 |
| Engine lifespan, km | ~400 000 |
The engine was installed on:
- Volkswagen Transporter T4 (7D) in 1990 – 1998.
Disadvantages of the VW AAB engine
This diesel engine has no turbine, and even the injection pump is mechanical, so it cannot break;
The cylinder head cracking following overheating is the most significant issue;
Since the timing belt can break and kill the motor, it is essential to keep an eye on its condition;
The engine frequently uses up to one liter of oil per 1000 kilometers during long runs;
Additionally, the injection pump frequently leaks as a result of gasket wear.