Tag Archives: bmw transmission faults

Jaguar S Type Gearbox Repair

BMW Automatic Transmission Problems

In the Stephens Engineering workshop, customers often bring their BMW automatic transmission problems to us for our experience and knowledge  of BMW automatic transmissions.

Over the many years of working on BMW automatic gearboxes, we have seen and solved many common BMW gearbox faults. The General Motors’ automatic transmission is the automatic gearbox fitted to some BMW models. The General Motors’ automatic gearbox is a robust, computer controlled automatic gearbox. The robust and hardworking BMW gearbox can  suffer from torque converter issues at high mileage. In addition, another common BMW gearbox problem is lubrication starvation within  certain areas of the BMW automatic transmission, again when the vehicle has been subjected to high mileage.

When a BMW with a gearbox fault is brought into the Stephens Engineering work, we carry out a through inspection of the BMW automatic transmission and during the rebuild of the BMW transmission, we also update the torque converter and valve body assembly. With our specialist knowledge and experience, we that BMW’s cooler system also requires attention to ensure smooth running of the gearbox and this is an area which we ensure is cleaned thoroughly.

Once the BMW transmission repairs have been completed within the workshop, we road test the BMW with a pressure gauge to confirm that all the BMW’s readings are consistent and in line with manufacturer’s data.

If you are experiencing BMW automatic transmission problems, book in your BMW with the automatic transmission repair experts in Ware and we’ll repair your BMW automatic gearbox so that you can return to effortless motoring.

automatic gearbox repairs

BMW 1 Series Gearbox Repair

BMW 1 Series Gearbox Repair

A 2009 BMW 1 series was brought into the workshop with the transmission warning light showing.  We ran a diagnostic check and the diagnostic print out recorded issues with the 4th and 5th gear ratio.

The automatic gearbox of the BMW was removed and stripped down and thoroughly examined.  All the components were noted to all be in satisfactory condition with the exception of the “E” clutch unit. The “E” clutch unit is applied in 4th and 5th gear and on this BMW 1 Series, had a suffered a crack to the drum which was causing a loss of hydraulic pressure. The loss of hydraulic pressure within the unit affected the performance of the vehicle.  The BMW 1 Series gearbox repair started by replacing the drum of the clutch, the bushes were checked and also the hydraulic pressure. All the parts of the automatic gearbox were checked and cleaned and the gearbox was re-assembled. The clutch unit and gearbox were refitted and all the codes had cleared. A long road test was carried out and all faults were gone and the vehicle was running well.

At Stephens Engineering, we can run diagnostic tests to find the fault when you’re transmission warning starts to show and carry out the repairs required. Avoid damage to your engine and let the specialists in automatic transmissions sort out your vehicle’s fault code.

Contact us today.

BMW 740 Automatic Transmission Faults

BMW 740 Automatic Transmission Faults

Last week in the Stephens Engineering workshop, one of the vehicles brought in for our expert opinion and diagnostic skills was a five year old BMW 740.  This BMW 740 vehicle was brought in to the workshop with a report of transmission faults.  A full and comprehensive diagnostic scan was carried out in the Stephens Engineering workshop by our skilled mechanics and no fault codes were recorded. We then carried out a road test and after running for 10 miles, the shift pattern of the BMW 740 became erratic. Once the vehicle was back in the workshop, a sample of the gearbox oil was taken for a glycol test.  The glycol test confirmed that the transmission fluid had been contaminated and contained an amount of antifreeze fluid. We then removed the automatic transmission and thoroughly overhauled the gearbox, together with the torque converter.

The automatic transmission failure for this BMW 740, was the result of the gearbox intercooler mounted in the engine bay.

The automatic transmission experts at Stephens Engineering are here to repair and overhaul your automatic transmission, whether the fault is intermittent or ongoing. Our knowledge and expertise with automatic transmissions is second to none.