Category: Inpa valvetronic adaptation

To perform adaptations: to create an initial maps for all management systems long-term fuel trim map, ignition map, etc. For modern engines, adaptations are created for: accelerator pedal, throttle, VANOS, crankshaft, camshaft and knock sensors, fuel and ignition supply, wide-band Lambda probes, NOx sensor, etc.

Which program to use for reprogramming valvetronic servo motor

Adaptations has to be renewed, if any of mentioned components is been replaced: sensor, ignition coils after misfireinjectors, not to mention more serious details VANOS, pistons, etc. INPA loader 2. In this case you just have to follow the instructions. After deleting long-term fuel trims, you have to plan both time about half an hour and place calm stretch of road to create new long-term fuel trims.

First driving session will be with switched off unheated Lambda probes — the flywheel data long-term trim will be in progress. To perform the flywheel long-term trim, speed up in 4-th gear to RPM, glock flat trigger, lay off the accelerator pedal use the manual mode, if your car has automatic transmissionslow down to RPM.

More about flywheel adaptations: see entry about flywheel adaptations. Let the engine run idle for The performance of engine can be quite dull. Then I start the engine, go to point 2. If long-term fuel trims are deleted via ISTA D procedure change of injectors, Rough run test sequence — this part is not necessary.

Start the engine, allow it to idle run for At the same time would be very good to control short-term fuel trims and values of offset long-term fuel trims. When offset long-term fuel trims are overwritten, short-term fuel trims are within their normal rangespeed up easy, without too much enthusiasm, not to catch misfire to First After Turn on the engine, allow it to run idle for In this point repeated modification of long-term trim for idle run will happen long-term trims has been changed, because MSD80 re-adapted the injectors according to their real flow characteristics.

When offset long-term trims are overwritten, it can be considered, that initial long-term fuel trims for both banks are completed. Of course, the engine will continue with creating long-term trim maps for other performance modes high load, cold engine etc. Some of the error messages stops creating of long-term trims, so it is very important to spot these error messages immediately, delete them and repeat the actual long-term trim stage.

Rough run values are fluctuating around 0. Yes, usually nobody strains to do this — error messages deleted, problem solved, happy travels. Unfortunately quite often it ends with uneven running of engine, lots of error messages and again — to service, look for a problem etc.

Short step by step procedure is described here and here. After new adaptations are completed after Procedure: how to create flywheel and initial fuel adaptations using INPA.

E90 320i valvetronic failure and good fix to failure.

Injectors flow rate coding. Flow rate. Trim errors. Hidden cause. Skip to content. Performing adaptations is very important stage after replacing any meaning component of engine.

inpa valvetronic adaptation

What does it means — to perform adaptations? This time more detailed about long-term fuel trims. Confirmation of successful clearing of adaptations: INPA loader 2. All LTFT offset and multiplicative type should be 0,I have an occasional rough idle on my iwhen fully warmed up not the normal rough idle on startup.

Sometimes it's there, somestimes not. Sometimes for an hour, sometimes for a day. But I think it's getting worse happens more often. When there's enough speed, no problems whatsoever I have only 1 single fault in the error memory: which corresponds with Peake and P : over advanced intake cam, bank2 drivers side.

I connected my GT1 setup vmware and tried to run a smooth running measurement.

Diagnosing a Failing BMW Vanos System – When to Repair Your Vanos

The GT1 cannot comply and states the valvetronic is in fail safe running mode see attachment. If I clear my error memory, than the car idles excellent, and the smooth running test is possible and shows no problems.

Could there be something "sticking", preventing the cam to retard back??? Maybe the experts on the board can shed some light on the figures. Any suggestions are deeply appreciated You may want to also inspect the engine wiring harnness for any shorts. The harness seems to be a pretty common problem. Also CCV valve in valve cover. I've checked and cleaned them. They are not torn or otherwise broke, only covered with oil.

I've got the same symptoms as Ghibli. My car is a E46 with the N42 valvetronic engine. I've been researching this for some time and the information points to worn intermediate levers. I tried a quick diagnostic test with GT1 and got the same error message about the valvetronic being in fail-safe mode. I've read in another forum that using GT1, it is possible to adjust the minimum valve lift at idle from the default of 0.

I will try this when I get a chance. If anyone can shed some light on this, there are plenty of people who would be helped out I'm sure.Welcome to world's most trustworthy automotive forum. Thread Rating: 67 Vote s - 2. E90 i valvetronic failure and good fix to failure. Reputation: 5. Recently I had a E90 i come into my shop with the mil light on and running on half power. A scan of the vehicle indicated valvetronic servor motor internal failure. On testing the valvetronic servor motor I found it to be working.

The problem was it was not advancing the valve timing thus the half power of the engine. If you ever have this problem here is a fix that works. Remove the servor motor and. With a screwdriver push the eccentric shaft gear as far back anti clockwise as it can go. Insert the servor motor and connect its 2 pin plug. Them switch the ignition onto position 2 and withing a space of 15 seconds depress the accelarator pedel down to full throttle 10 times and you will hear the servor motor program itself back to factory spec.

Re-fit the valve cover and problem solved. I hope you will find this post useful. Any questions just ask me. Reputation: 7. That is a very good trick to know. I bet it works on other engines with valvetronic from the E90 series. We never got the 2. The 2. Hi there yes this trick will work on any BMW which has valvetronic servor motors to advance the valve timing. This trick was shown to me by the BMW main dealer here in south africa.

The main dealer told me that it is a common fault on the the valvetronic engines. Just got an email back from a friend in the Virgin Islands and he loves the fix. He has a car in with the same symptoms. He will be trying this today. Great I hope it all works out for him.

inpa valvetronic adaptation

Then also when he comes to the programming in the car via the accelarator peddle he MUST put the pob key into the dash the he MUST touch the start button lightly just so that the dash cluster lights come on.

He must the immediately push the accelarator pedel full throttle ten times and listen for the servor motor setting itself while he does it. I hope it all works out for your friend. Was is valvetronic internal failure and valvetronic solonoid failure? I will check on the codes he got, he was sure it was the servo motor. He has been BMW certified for almost 30 years.Welcome to world's most trustworthy automotive forum.

Thread Rating: 67 Vote s - 2. E90 i valvetronic failure and good fix to failure. Reputation: 5. Recently I had a E90 i come into my shop with the mil light on and running on half power. A scan of the vehicle indicated valvetronic servor motor internal failure. On testing the valvetronic servor motor I found it to be working.

The problem was it was not advancing the valve timing thus the half power of the engine. If you ever have this problem here is a fix that works. Remove the servor motor and. With a screwdriver push the eccentric shaft gear as far back anti clockwise as it can go. Insert the servor motor and connect its 2 pin plug. Them switch the ignition onto position 2 and withing a space of 15 seconds depress the accelarator pedel down to full throttle 10 times and you will hear the servor motor program itself back to factory spec.

Re-fit the valve cover and problem solved. I hope you will find this post useful. Any questions just ask me. Reputation: 7. That is a very good trick to know. I bet it works on other engines with valvetronic from the E90 series. We never got the 2. The 2. Hi there yes this trick will work on any BMW which has valvetronic servor motors to advance the valve timing.

This trick was shown to me by the BMW main dealer here in south africa. The main dealer told me that it is a common fault on the the valvetronic engines.

Just got an email back from a friend in the Virgin Islands and he loves the fix. He has a car in with the same symptoms. He will be trying this today. Great I hope it all works out for him. Then also when he comes to the programming in the car via the accelarator peddle he MUST put the pob key into the dash the he MUST touch the start button lightly just so that the dash cluster lights come on. He must the immediately push the accelarator pedel full throttle ten times and listen for the servor motor setting itself while he does it.

I hope it all works out for your friend.

inpa valvetronic adaptation

Was is valvetronic internal failure and valvetronic solonoid failure? I will check on the codes he got, he was sure it was the servo motor.

He has been BMW certified for almost 30 years. He went independent about 3 years ago. I will pass on all the info just to make sure he gets the reset correct. I have not heard back yet, but will send the info to play it safe. Thanks again. Great glad to hear it worked out right for your friend.Turn the Ignition off for 5 minutes to power the control units down.

The reading should be between Ohms. If the transmission or engine control unit is changed, the fast adaptation procedure must be repeated.

There are two procedures hat must be completed before the XP on the display is removed. Clutch Adaptation and Ratio Adaptation. Every week we get many phone calls to ask us " How we perform the Adaptation on the Mini Cooper " and the first question we ask, what for diagnostic Tools you have?? To make it clear, if you NOT have the proper Diagnostic tools you do not have any other joys as to bring the car to the Dealer ship for help. It is not a option, if you wont to work on the Mini cooper you need to have the BMW Diagnostic Tool GT1 or INPA, there is NO aftermarket tool on the market that can perform Adaptation or clutch reset, life data reset on so on, don't waist your and your customers time.

If this is understood we can go and perform the Adaptation. After every repair or transmission change or after you notice a funny behavior you need to perform a so called "Adaptation procedure". Because of change of tolerances the transmission starts to shift funny, many Car owners don't know what is going on with there car and keep on driving to this point the rile have a problem, in stet to perform a new "learning procedure" I believe, the car owner get in problems because the manufacturer mist to educate the car owner about this new transmission type.

Before I explain now how you perform the adaptation successively keep in mind that my your car still will not run or up shift properly because of many other problems you can have specially after a heavy repair oft the CVT transmission.

Conversion of inputs from the selector lever switches and steering wheel switches I f fitted into a CAN instruction that is read by the engine control unit. Conversion of the CAN instruction for the engine control unit into electrical signals to drive the stepper motor, clutch and secondary pressure solenoids.

The ECU controls the position of the stepper motor indirectly by instructing the G I U to control the motor to a given position. Instrument cluster you think? Therefore erase all codes. Now access Diagnosis functions and component selection as you see at the picture to your right.

Erase all clutch adaptation and the driving adaptations. If you think you have a control unit problem ,perform the control unit self test in the same time.BMW Valvetronic eccentric shaft failure can happen suddenly. You start the car and there feels to be a slightly rough idle, but other than that, all is ok. Shortly after, you get a light on you dash.

A service engine soon or check engine CEL appears on the dash. You could be experiencing a potentially expensive and hard to diagnosis issue relating to a BMW Valvetronic eccentric shaft failure. The Valvetronic system on your bmw is a variable valve lift setup which, in combination with variable valve timing, allows the intake valve timing to be infinitely adjustable.

The electric valvetronic motor was first on normally-aspirated engines but is now common on the turbocharged vehicles as well. It is responsible for actuating an eccentric shaft that adjusts intake valve lift. The motor itself is pretty reliable and does not fail too often. This means a BMW with valvetronic effectively negates the need for a throttle body, increases efficiency by minimising pumping losses and improves fuel economy and emissions. Faults were for the valvetronic motor and valvetronic not reaching its limit.

We performed the test plan which runs the valvetronic through its operating range and relearns the position. The shaft over time and mileage wears in certain spots that cause the movement of the shaft to bind.

inpa valvetronic adaptation

This increased resistance is picked up by the computer monitoring the motor and a fault is thrown. The Valvetronic eccentric shaft needed to be replaced. Removing it requires the removal of the valve cover. Special BMW tooling is required to release tension from the shaft springs and levers.

Even with the tool, it is very easy for a spring to jump off and be in a position that can potentially cause catastrophic engine failure. After the repairs are performed on the Valvetronic assembly, the limit stops have to be relearned using the BMW scan tool to do this procedure. The limit stops are the mechanical limit stop, end to end of rotation of the eccentric shaft.

live valvetronic adaptation bmw n42 n46

The DME digital motor electronics records these stops via the eccentric shaft sensor to determine mechanical adjustment limits of the eccentric shaft. This is why the faults occur, the end stops are not correctly sensed when doing the precheck, or in this case, extra resistance from the shaft made the time to reach the limits longer than spec.

Whit the new shafts in place, the vehicle was back to smooth fault-free running.Valvetronic is, most probably, the most hated hub of the BMW engine.

Valvetronic changes reduces the opening of inlet valves and allows the inlet valves to perform as an individual throttle of each cylinder. The avoidance of such air pumping gives even till Without Valvetronic — the air supply is managed with throttle opening, inlet valves in all cases are opening with maximum stroke With Valvetronic — the throttle is fully opened, the amount of air is manages with the stroke of inlet valves 0.

The stroke of the valves is minimal in idle 0. In the picture — construction of Valvetronic. More detailed information, how does the Valvetronic works, you can find in the aftersales materials of BMW AG, in this entry I will pay more attention, how to detect defects of Valvetronic. DME controls the voltage, supplied to the motor the Bridge type controller is used to manage the voltage — the voltage can change the polarity and current, consumed by it.

DME contains the map with information about the allowed consumption of the current, depending on the voltage, supplied to it. DME continuously controls signals of Valvetronic sensors and immediately records the error messages regarding their performance, if signals of sensors are incorrect.

DME creates the adaptation map of the eccentric shaft — it compares data of the sensors with air, consumed by the engine, in current mode. The adaptation map allows quickly and accurately place the eccentric shaft in the necessary position already foreseeing exact position — compensating technological allowances of the sensor itself and also the shaft. Based on data of both hubs, mentioned before, DME calculates time, which is necessary for the engine to turn the eccentric shaft till exact position and corrects voltage, supplied, to the motor creates adaptation map in such way, that this turning is performed with most optimal required speed.

If the error message regarding Valvetronic is recorded, it is very significant not only to read the error message code but also collect all information regarding obstacles, when the error message was recorded.

For this cause use the INPA freeze-frame. For example, the error message regarding the inadequacy of current consumption can be caused by a problem with the motor itself or also periodical pledging of the eccentric shaft. A situation, when the appropriate error message regarding the performance of the Valvetronic is recorded, is comparatively simple.

These are technological tolerances and exceeding on them due to wear of the spare parts. This problem is more actual in idle and low load conditions. As already mentioned before, in idle the valves are opening for average only 0. If by opening 0. The same situation will be reached if both inlet valves are moved only microns 0. Moreover, high precision of details has to be compiled for almost all Valvetronic components in the picture: positions No.

But I must add right away — unfortunately, opposite to good thing, which is Valvetronic doing it saves fuelit worsens the balance of cylinders proportion of fuel mixture and mechanical efficiency in idle and in the low load area. How does DME even the performance of cylinders in idle?

Cylinders, which inlet valves are performing slightly decreased movement they have air shortagehas to work with the slightly enriched mixture, for an average fuel mixture of all bank or all cylinders would be correct with Lambda 1. As a result, the mechanical efficiency of cylinders is evened, but chemical disbalance is solved by CO catalytic converters burning the excess fuel.

Of course, this solution has its limitations. As a result — detonation, increased fuel consumption, damaged CO catalytic converters.