Used Engine ECU Cloning Replacement

An Engine ECU – DME/ DDE as BMW call it, monitor and control the running of the engine. Unfortunately these can fail for various reasons. Most common is water damage, however internal faults causing misfires, incorrect sensor readings, or even a non start. This means the ecu requires replacement.

A new unit is usually expensive in the thousands, which can write off some older vehicles. Buying a used unit, you cannot simply plug into the vehicle and expect it to start, as programming and immobiliser codes set in the software will prevent this from being possible.

 

Fortunately we have specialist software & equipment allowing us to ‘clone’ transfer the data inside the original unit into a used donor unit, thus allowing it to be compatible with the vehicle, enabling it to start and run like the original (without the previous running faults).

If your BMW or MINI is at the dealer with an eye watering sum to replace a component. Give us a call to see if we can help

Fault investigation and diagnosis

Intake Valve Walnut Blast Cleaning

This very tidy Mini Cooper S with the N14 engine in with us for an intake valve & port walnut blast cleaning procedure. This is to remove the carbon build up around the intake valves that occurs over time. We recommend around every 60,000 miles for a clean. This build up occurs on direct fuel injection engines where the fuel is no longer injected inside the intake manifold which used to wash the valves to prevent this build up from occurring.

A mixture of crank case oil, egr gas on some engines then extreme heat on the valves causes this build up. The driver will notice a drop in performance and rough running, sometimes a misfire when started from cold if the build up is extreme enough to restrict the air flow into the combustion cylinder.

This procedure is the most cost affective way to remove the carbon build up. Eliminating the need to remove the cylinder head to manually clean the valves! This procedure can be carried on various BMW & MINI, Petrol & Diesel engines with direct fuel injection.

Here to help

Walnut blast cleaning

BMW & MINI Remote key

If your vehicle requires a new replacement remote key. We are able to provide an aftermarket replacement. Making a saving than ordering a new key from the dealership and having to wait for it to arrive from Germany.

Programmed in house to your vehicle in one day! (BMW & Mini only – Excludes cut key blade)

Please note we are currently booking 2 months in advance at present for all work.

BMW and Mini remote key replacement

BMW & MINI FRM Repair

The FRM – Footwell module, fitted to various BMWs & MINIs between 2005 to 2015.

This unit controls the light and window functions on the vehicle.

A known problem with this unit is corruption of the data inside after the vehicle battery has been disconnected or connected to diagnostic equipment. Which then stops communication to the unit. The driver will notice no vehicle lighting or function of the power windows.

A few years ago the only solution was a new replacement unit at around £500, making it a costly repair.
However we have specialist software & equipment that allows us to repair the corrupted data of the original unit, saving the unit and more importantly money, at an hours labour of £72 inc vat. That’s more like it!

So if a garage has reported your FRM requires replacement, please get in touch, we will see if we can help!

BMW and Mini ECU repair

Customer Feedback – Thank you so much

Once again, thank you so much to all of our customers for taking the time to leave us such amazing reviews. I think 9 reviews in one day must be a record! It means so much to us all. What maybe helping is the Good Garage Scheme is running a Christmas Prize Draw to win a Grand of love2shop vouchers.

So if you have had work carried out by us, please feel free to leave us feedback on the GGS website to be entered into the draw at Christmas

Use code GGSXMAS1000 – Best of luck!

If you’re feeling extra generous, please add the review text to Google as well

Leave us feedback at the  Good Garage Scheme
See our reviews

Water Damaged Engine ECU – Used Unit Replacement

We do enjoy replacing used engine control units – DME, here at Burch Motor Works. They are known to having a little bath in the box where they are located in the engine bay.

A new replacement for this ECU from BMW is £1,350 for the part alone.

The owner of this vehicle had tried other garages that are able to clone/ transfer the information from his old damaged ecu to a used donor unit. We also have the ability to do this.

However this is not always possible from the water damage making the file unreadable to transfer, as it was in this case.

Fortunately we have specialist programming equipment allowing us to transfer the ISN code, which is the immobiliser code from a used donor engine ecu to the immobiliser ecu – CAS. This needs to be done to allow the units to match for the engine to start and cannot be carried out by BMW dealer equipment.
Used engine ecu fitted and programmed, the car now starts and drives as it should! Along with drilling a hole in the bottom of the location box to prevent the same fault from reoccurring!

With the saving over £1,000 than a new ECU alone! That pleased the owner which pleases us too!
(Apologies for the poor quality screen shots)

ECU Replacement

 

Vehicle Servicing under warranty

A couple of high power BMW 1 Series recently in the workshop for their first services, after 2 years if the mileage has not been covered.

Using genuine bmw & mini parts to maintain the manufacturers warranty, along with updating the service history database and loading on to the I-drive

You do not have to take your car to the dealer to be serviced whilst under the manufacturers 3 year warranty, so please don’t be told otherwise! You’re free to service where you wish using genuine parts at a vat registered garage!

Please note we do book approx. 6 weeks in advance. So please book as early as possible
Thank you to everyone for their custom!

Our BMW Servicing

https://www.goodgaragescheme.com/

 

BMW M4 All round Brake pad & disc replacement

We had the pleasure of having this stunning BMW F82 in for all brakes replacement. The brakes weren’t due to be replaced but the customer didn’t like the wear and corrosion to the discs. And quite rightly so they didn’t look great.

As with all our brakes replacement we thoroughly remove the corrosion build up from the hub and wheel faces to prevent brake pad pick up causing disc warping.

Along with carrier and slider cleaning, then high temp grease to the brake pads to ensure free movement for miles to come.

We look forward to seeing this motor again in the future!
(If anyone can find the issue in one of the pictures that we needed to rectify before putting the new discs on please comment. If correct you’ll receive a virtual pat on the back!)

BMW M Model Servicing

 

BMW 320i Engine hesitation/ jerking under acceleration… fixed

A recent BMW 320i with the B48 4 cylinder petrol turbo engine with us. Fault of hesitation/ jerking sensation under acceleration. This car had been to a garage and bmw dealer previously but unable to locate the fault.

Road tested vehicle to confirm the fault under acceleration. Fault codes showing the engine is running too lean. Which means there is too much air going into the engine (or so it thinks) to fuel expected detected by the ecu using the various sensors fitted.

A fuel tank breather valve had been fitted previously by the bmw dealer, which is a known fault on this engine, but did not resolve the fault.

Using the bmw diagnostic system makes our job much easier to locate and rectify faults but it’s not always the silver bullet.

Using the diagnostics we ran through several air to fuel mixture tests. All passed ok but this is with the car stationary in the workshop. This fault only occurs whilst the engine is under load/ acceleration on the road. We then smoke leak tested the intake system, pipes, manifold, etc. No smoke present proving the intake system is tight and no allowing any extra air into the engine. Moving onto the turbo and exhaust and no smoke/ leaks either.
With the fault not showing in the workshop we took the computer on the road with us to inspect the live data readings to see if we can see any abnormalities to locate the fault.

Air mass, intake manifold and fuel pressure sensors showing plausible readings to the specified requirements. It took a while to locate as the fault was intermittent under acceleration. But eventually we found the oxygen sensor reading would go lean the same time as the hesitation/ jerking sensation. Upto 1.81.
Unfortunately the bmw diagnostics live data readings are not easy to read when they are changing quickly. So we grabbed the Bosch diagnostic system where we can graph and record the live data to easily read our findings.

The oxygen or known as a lambda sensor is located in the exhaust, either in the manifold or after the turbo if one is fitted. The sensor does what its called and measures the amount of oxygen present in the exhaust exiting the engine. A lean condition means not enough fuel so the ecu will then injector more fuel to compensate. Then a rich condition means too much fuel, the ecu will then inject less fuel. This is constantly monitored and adjusted to try to reach lambda 1. The ‘perfect’ air to fuel ratio.

As we could see from our sensor it would intermittently spike lean at 1.81. Rather than smoothly adjusting around lambda 1.
Next was to test the sensor & wiring directly, as an oxygen heater fault was also stored previously. All circuit tests passed ok. With the sensor removed we could visually see the engine/ exhaust gas is in a lean condition, with the sensor tip being white in colour.

With all other systems tested without fault to cause a lean condition. We suspected the sensor had an intermittent internal fault.
With the oxygen sensor replaced, vehicle software level updated & adaptations reset. We road tested the vehicle and it now drives as it should.
Tried. Tested. Fixed.

Fault Investigation – Diagnosis