Opel Zafira
Opel's own 1.7-litre common-rail diesel that replaced the Isuzu Z17DTH. Thermally well designed but with known weaknesses in the EGR system and timing chain. Short-trip use is poison for this engine.
Zafira B diesel 1.7
92 kW in the Zafira B – solid diesel choice for family drivers.
Engine Weaknesses 5
The EGR cooler can develop an internal leak allowing coolant into the intake. This results in gradual coolant loss and, in worst case, engine failure through overheating.
Symptoms: Gradual coolant loss, white smoke from exhaust, bubbles in coolant reservoir, coolant temperature rising abnormally.
The variable geometry turbocharger can seize at the vanes due to soot deposits. Aggravated by EGR and DPF problems and short trips. Limp mode at 2,500 rpm is typical.
Symptoms: Engine management light, power loss with limp mode at approx. 2,500 rpm, boost pressure fault code, whistling from turbo.
The timing chain can stretch prematurely with neglected oil change intervals. Rattling on cold start indicates wear. If the chain breaks, catastrophic engine failure follows.
Symptoms: Rattling or ticking on cold start from the timing chain area, noise fades on warm-up, engine management light at advanced wear.
The EGR valve carbons up with soot deposits and sticks open or closed. Typical problem on short trips without reaching the self-cleaning temperature.
Symptoms: Power loss under full load, misfires at low rpm, engine management light, elevated exhaust soot.
The metering unit of the high-pressure pump regulates common-rail fuel pressure and can fail through wear. Replacement is inexpensive; a failed pump itself is costly.
Symptoms: Rough idle, misfires between 1,500 and 2,000 rpm, hot-start problems, engine stalling shortly after start.
Vehicle Weaknesses 14
Heated screen wash nozzles can overheat and ignite the vehicle. Opel recalled affected Zafira B models from build years 2004–2006. Repair was free of charge at the dealer.
Fault code C0131 indicates a typical ABS control unit defect on the Zafira B. The ECU can fail due to moisture or voltage spikes and must be replaced at considerable effort.
On diesel models up to build year 2005 water, dirt and salt collect in an insulation material on the front subframe causing severe internal rust. Total rust makes the vehicle beyond repair.
On the Zafira B steel brake lines at the rear axle and along the underbody are particularly susceptible to corrosion. Moisture collects in the contact area with insulation mats.
The hydraulic power steering pump frequently fails from 100,000 km. Additionally CIM module defects lead to intermittent steering failure. Typical problem of the GM Epsilon platform.
The Column Integration Module coordinates horn, steering angle sensor, immobiliser and steering wheel remote control. Contact problems lead to serial errors on the CAN bus.
The electric Quickheat supplementary heater of the Zafira B fails due to capacitor defects or ECU failure. Primarily affects older high-mileage models.
The immobiliser transponder in the key or the reader coil at the ignition switch of the Zafira B can fail and block the vehicle permanently. Often occurs after several years.
The M32 manual gearbox in the Zafira B suffers from premature bearing wear on the 6th gear input shaft. Typical howling at motorway speed from approx. 150,000 km.
The MOSFET in the AC auto blower controller destroys itself and gets stuck at one blower speed. With non-OEM parts there is increased fire risk through overheating.
Quickly wearing suspension springs and shock absorbers as the main weak point. The multi-seat Flex7 concept puts particular stress on the rear axle.
On vehicles with panoramic roof the drain channels block with leaves and dirt. Water backs up in the frame and enters the interior through the headliner.
On the Zafira B the plastic expansion tanks develop hairline cracks. The gradual coolant loss can go unnoticed until the ABS control unit is damaged by escaping fluid.
The folded third-row seats in the Zafira B (Flex7) rustle and rattle while driving. Belt guides hang loose and knock against the trim.
