Proton Savvy, 1149cc, with Renault Quickshift G'box

Description

This is a test drive of my 4 year old Proton Savvy compact car, 1149cc Renault D4F, 75BHP @ 5500rpm, 105nm @ 4250rpm, Galvanized high tensile steel monoque chassis, front wheel drived, sequencial gearbox (manual gearbox anatomy, no torque-converter), bore x stroke 69mm x 76mm, in-line 4, drive-by-wire throtle body, multi-port fuel injected, SOHC 16Valves. Front suspension is McPherson configuration, lower control arm mounted on square type subframe, rear suspension is programmed deflection torsion axle. This gearbox is basically anatomically similar to a manual tranmission, having a single clutch plate and 5 foward ratios with reverse. The shifter in the gearbox is controlled by a hydraulic actuator and the clutch is controlled a hydraulic clucth actuator pump. The pressure for the hydraulic system is built by a main electrical pump. There are some issues with the gearbox hydraulic main electrical pump due to insufficient electrical reservoir resulting in undervoltage during shifts which caused overheating, jamming and premature failure. Critical failure at 36000 km millage. Replaced the main electrical pump which failed due to undervoltage resulting in loss of pressure for both the hydraulic shifter actuator and the hydraulic clutch pump. Manufacturer refuses to admit design fault. Basically the current ratings between hydraulic system and the cars electrical reservoir were mismatched. After expensive repairs, the same symptoms of rough and jerky gear changes still <b>...</b>

Keywords

automotive, proton savvy, gearbox, renault D4F, automobile problems, small engine, handling, cornering, traffic jam, hatchback, supermini, sequencial gearbox, renault quickshift, voltage condenser, repairs, car, engine

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