Fiat Punto Turbo

1.3 Multijet on the Fiat Punto: why doesn't the same 1250 cm³ engine take the same turbo across every engine code?

This is the classic pitfall with this model: the 1.3 Multijet accounts for virtually the entire diesel line-up of the Punto, yet it comes in at least four distinct engine code families — 188A9.000, 199A2.000, 199A9.000, 199A3.000, 199B2.000, as well as codes A13DTC and Z13DTJ — and these families do not share the same turbo references. A 1.3 JTD 70 hp and a 1.3 Multijet 90 hp may show the same engine capacity, but they require different turbos. Using only the power output or the engine capacity as your selection criterion will consistently lead to an ordering mistake.

Read the engine code first

On the diesel Punto, the engine code stamped on the block is the only reliable means of identification. For the 1.3 JTD 70 hp and the 1.3 Multijet 75 hp, the codes 188A9.000, 199A2.000 and 199A9.000 are applicable. The 1.3 JTD 16V and the 1.3 D Multijet 75 hp cover codes 188A9.000, 199A2.000, 199B2.000, A13DTC and Z13DTJ. The 1.3 Multijet 90 hp and JTD 90 hp correspond to code 199 A3.000, whilst the 1.3 Multijet 90 hp and 95 hp group together codes 199 B1.000, 225 A2.000, 312 A8.000, 312 B1.000, 312 B2, 312 B5.000, 330 A1.000, 955 B2.000 and A 13 FD. The 1.7 TD, an older engine, has its own codes: 146 B3.000, 146 D7.000, 176 A3.000, 176 A5.000 and 176 B7.000. All turbos listed here are new parts, sold with no old unit to return.

Symptoms and root causes to address before replacement

On the 1.3 Multijet, turbo failure most commonly presents as blue or grey exhaust smoke, a whistling noise under acceleration, or a sharp loss of power. These engines are sensitive to the quality and regularity of oil changes: degraded oil or excessively long service intervals will damage the turbo bearings. A blocked diesel particulate filter also generates excessive back-pressure that is harmful to the turbine. Before any replacement, it is essential to diagnose and rectify the root cause of the fault — the oil circuit, air leaks on the intake hoses, the condition of the DPF — otherwise the new turbo is likely to suffer the same fate in short order.