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CHEVROLET CRUZE: HERE THIS HOW HAS BEEN DISTRIBUTED

The history of this car in our repair began a month ago. Chevrolet Cruze arrived at the firmware (chip tuning) after removing the catalyst. One of the very first non-public rules of such work, firmware is made only on a fully serviceable car. So, we connect with a scanner, read errors, and see that in addition to P0420 – the efficiency of the catalyst is another P0340 – intake camshaft.

After removing the error, it immediately appeared. Having listened to the work of the motor, there were distinct, periodic interruptions in the operation of the engine.

Of course, it is not worth doing chip tuning with such a problem, as practice shows, if there is a malfunction in the car, this will only aggravate the situation.

The client picks up the car, and after a while comes to the diagnosis. As already mentioned in many articles about troubleshooting. We start a conversation with a client, and already from the conversation it became known that the timing belt had been replaced not so long ago. And just after that, these sometimes occurring interruptions in the operation of the internal combustion engine began. We make a small digression, and call the hero of the occasion Z18XER who also stands on Opel.

Now, in general, about the search for a malfunction in the car Chevrolet Cruise.

Without hesitation, we get our MT-PRO motor tester, and remove the signal from the camshaft sensor. On a vskidku signal equal with the correct amplitude, without any distortion (the sensor has nothing to do with it). Since the computer is in cm 40 from the camshaft sensor connector, we call the ground, power and signal wire. Everything is there and no signs of oxidation either. Perhaps there is some problem in the system regulation phase. Forcedly supplying power to the phase-regulation solenoid valve, the machine stalls, indicating that there is no problem with this system explicitly. We remove the electric valve itself, which looks clean, not coked. Visually the stock goes exactly without biting.

We take a short pause to think and drink coffee. Where to dig further. Why do I always speak in the plural, because I work with a partner Vitaly Latypov, who is present in the country of the masters on the portal autodata.

We met at the conduct of the Olympics autodiagnostov in the city of Yekaterinburg. Legion-Avtodata company held this event, for which many thanks to them. All done at the highest level. So many diagnosticians in one place where the diagnostician doesn’t look, a lot of conversations and interesting stories from each of the participants.

We recall the words of the client that the timing belt had recently changed.

Why did we not immediately pay attention to this, because even before replacing the timing check was already burning on the catalyst and the client simply did not know about the appearance of another error.

We remove the synchronization DPKV – DPRV and begin to look for the standard on the Internet.

On the portal injector service, what a kind person, unfortunately, I do not remember his nickname, shared the reference oscillogram with a working car. We compare with ours and do not understand one thing, where did one tooth of the signal of the intake camshaft sensor go, just in which the error burns.

We begin to intensively wool the Internet, the reference oscillogram can at all not reference.

And when we find nothing, we make a decision to raise the valve cover and look what is wrong there. We are removing we are starting to rotate the crankshaft on the sly, and here it is, there is no tooth of the master rotor of the intake camshaft, and looking closely it became clear that it is simply broken.

The sentence is unambiguous, the replacement of the camshaft. Someone can say why so dramatically, the reader changes separately, but the guys there are no guides or keys, you can dress it up as you like, this is not the case when there is no choice and experiments are needed.

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