Vivaro Clutch does not jerk when it is cold
Many diesel drivers suddenly know the problem if the engine jerks, it refuses to accept the throttle, and has Acceleration problems. The memory of expensive workshop bills immediately pops into your head - will it be the same this time? In many diesel cars, these symptoms are preprogrammed; they very often come from turbocharger and its attachments. For those who like to screw things up and want to see for themselves whether they can repair this problem, we have put together a few tips on how you can proceed systematically and possibly solve the problem yourself for little money.
If your diesel vehicle suddenly no longer runs completely smoothly, refuses to accept the throttle, or even jumps into emergency mode, then you need to act. With this article we do not want to encourage you to become active without a workshop or professional help, you can only proceed according to our instructions if you are already a hobby screwdriver and do not have two left hands. This is how the typical weak points are checked and with a little luck repaired quickly and cheaply.
Read out the fault memory
The first point of contact should always be the fault memory, your car stores all malfunctions that happen in everyday life while driving in the fault memory. Reading out the error memory is no big deal, just plug in the device and the errors are displayed. Every workshop has the necessary equipment, but now you can buy the necessary hardware yourself relatively cheaply in order to be able to read the errors from any car, we will soon publish an extra article about it. Until then, please click here to see how the fault memory of your car can be read out.
Is the turbocharger defective?
That would of course be the worst case, because a defective turbocharger costs a lot of money. Replacing or repairing the turbocharger quickly results in 4-digit sums. So keep your fingers crossed that it is not the turbocharger directly.
But even if you are afraid of one expensive workshop invoice you should get to the bottom of the matter quickly. Because a turbocharger usually "dies" slowly, that is, with every kilometer driven, it breaks a little more, if it is the turbocharger that is causing the symptoms. If you continue to drive happily then parts of the turbocharger can be torn off and get into the engine's combustion system, which of course makes things even more expensive. Therefore, it is always better to clarify a defective turbocharger in good time.
The symptoms that often indicate a defective turbocharger are:
- Turbocharger whistling
- Bluish or black smoke from the exhaust
- Loss of power, permanent or with increasing speed
What else can it be? Root cause research
Frequent reasons for a jerking of the engine or a severe loss of power are leaky / porous vacuum hoses. These, mostly black and inconspicuous hoses, can be the reason for the whole problem, because this air draw has a strong effect on the engine running. You can easily carry out a check yourself. Look in the engine compartment and look for the thin black hoses, check them carefully for damage, they are common Vacuum hoses Also popular with martens, you can clearly see bite marks. But even if you do not find any damage in the hose, it can be damaged at the connections where it is attached to components or distributors. Here you have to pull off the vacuum hose and check for damage. Tip: Read more about marten protection here.
Do you have Damage or holes then you can repair it yourself relatively easily. The new vacuum hose is available by the meter at an affordable price - can be ordered online here.
Or you can simply cut off the damaged piece and put it back in if the hose is long enough.
But there are also connectors for the vacuum hose, you simply cut the damaged piece out of the hose and put the two hose ends on the connector.
Another point: the pressure transducer
The Pressure converter is a component of the turbocharger which also breaks down frequently and is partly responsible for the engine jerking and lack of engine power. Roughly speaking, the pressure converter is responsible for ensuring that the turbocharger blades are in the correct position. If the pressure transducer no longer regulates this properly, then engine problems arise.
If you want to read more about the function of the pressure transducer, we recommend this PDF - click here.
But the good news, such a one Pressure transducer is affordable (from 30 to 40 euros) and can be exchanged relatively easily, even by hobby screwdrivers. So if the vacuum hoses are OK, look here for a suitable pressure transducer.
Conclusion: If the engine suddenly jerks, has misfires, or you have the feeling that the performance has suddenly disappeared, then there is still no reason to panic. Rather seldom, it is a dreaded turbocharger damage. As an accomplished hobby mechanic, you can start looking for yourself, and with a little luck your engine purrs like a satisfied kitten again, maybe it is due to a clogged diesel particulate filter.
We wish you a lot of success.
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