KNOWN FAULTS · Opel

Opel Vectra C / Signum 1.9 CDTI common problems.

2002–2008 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

1.9/2.4 JTD intake flaps, EGR and flywheelIntake / EGR / flywheel

Engine / equipment: 1.9 JTD / Multijet (8 and 16 valves), 2.4 JTD and JTDm in Fiat, Alfa Romeo 147, 156, 159, GT and Brera, Lancia and the Opel 1.9 CDTI
Period mentioned: 1997–2012
Symptoms: Power loss, rough idle and an engine light with “swirl actuator malfunction”; soot around the intake manifold; vibration and knocks in low gears (dual-mass flywheel).
Possible cause described: On the 16-valve 1.9 and 20-valve 2.4, the intake flaps seize with EGR soot and oil, and the control rod comes off as its plastic bushes wear. The EGR fouls in town use and the dual-mass flywheel wears between 80,000 and 150,000 km. The 8-valve 1.9 has no flaps.
Check for the garage: Check the rod and flap operation on top of the manifold, read actuator codes, inspect the EGR and listen to the flywheel when starting and stopping.
Cost cited in the source: Intake manifold: €400–900 in parts; EGR cleaning: €150–250A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 80,000–150,000 km. This is not a maintenance interval and does not predict a failure.

Applies if: Only if fitted with the M32 six-speed manual (common on six-speed turbo and diesel versions); confirm by VIN.

M32 manual gearbox bearingsGearbox

Engine / equipment: Getrag M32 six-speed manual: Opel Astra H and J, Insignia A, Zafira B and C, Vectra C, Meriva B, Cascada, Corsa OPC and some Fiats with the T-Jet engine
Period mentioned: 2004–2019
Symptoms: A whine that rises with speed, mainly in 5th and 6th (also in 1st and 2nd), a loose gear lever that moves on and off the throttle and, when advanced, gears jumping out. Left unrepaired, the bearing can break through the casing.
Possible cause described: The bearings wear, mainly the shaft bearing next to 6th gear: the rollers develop play and the shaft moves under load, which reaches the lever. A specialist blames incorrect factory shimming. Second-generation boxes with the revised end case fail far less, according to an Australian repairer.
Check for the garage: In a garage test: confirm whether the noise depends on road speed (wheel bearing, tyre) or the gear engaged (gearbox), and whether the lever moves under load. Check the oil for metal debris. Repair early: replacing all bearings and fitting the revised end case costs far less than a new gearbox.
Cost cited in the source: One owner replaced only the main bearing for about £47 in parts versus about £1,000 for a rebuilt gearbox; another quotes about €600 at a specialist.A rough figure from the original database, not an up-to-date quote.