Very slow acceleration

[Zephyr]

Now they are blaming the ECU and will try to code another to the car...

 

[Zephyr]

Swapping the ECU fixes the issue. First try, the car revs freely static or moving. They say that they will not bother troubleshooting the old one, could be anything from corrosion to short cirquit or eho knows what.
Will keep it one more day for coding to the vin and its done.
personally never heard of this before.

 

[DomiMik]

personally never heard of this before.

Neither did I, thanks for sharing the info. Might come in handy one day.

 

[Zephyr]

Just for the record of this thread and since this turned out to be a surprise, the ECU the car had was not the original.
It dated two years later and seemed to have some sort of short cirquit happened in the past
Proof of that is a black electrical arch embroidery on the box.
The strangest of all is that id did not throw any codes nor other signs of malfunction.
Damn electronics.
case closed the car now runs fine.

 

[GZed]

Just for the record of this thread and since this turned out to be a surprise, the ECU the car had was not the original.
It dated two years later and seemed to have some sort of short cirquit happened in the past
Proof of that is a black electrical arch embroidery on the box.
The strangest of all is that id did not throw any codes nor other signs of malfunction.
Damn electronics.
case closed the car now runs fine.

The symptoms you describe….

“Put any gear, car moves and revs dont pick up as they are supposed to. It takes time to climb the scale and acts as if something is blocking the engine to rev. And when it does there is no power like there is supposed to be”

…..seem to describe the action of the ASC ( or DSC?) traction control system. Wonder if the old ECU ‘thought’ the signals from the wheel rotation sensors or speedometer meant that it limited the engine power? It wouldn’t throw an error code because it would have ‘thought’ that this was a normal operational occurrence.

 

[Dino D]

Just for the record of this thread and since this turned out to be a surprise, the ECU the car had was not the original.
It dated two years later and seemed to have some sort of short cirquit happened in the past
Proof of that is a black electrical arch embroidery on the box.
The strangest of all is that id did not throw any codes nor other signs of malfunction.
Damn electronics.
case closed the car now runs fine.

That’s some good detective work from a garage - can I ask what the total bill was from the garage for that?

 

[Zephyr]

That’s some good detective work from a garage - can I ask what the total bill was from the garage for that?

200 labor and 340 for replacing and coding the ecu.
The rest of the parts used for testing were available from their stock. As you know, no receipt was issued... because Greece!

 

[Zephyr]

The symptoms you describe….

“Put any gear, car moves and revs dont pick up as they are supposed to. It takes time to climb the scale and acts as if something is blocking the engine to rev. And when it does there is no power like there is supposed to be”

…..seem to describe the action of the ASC ( or DSC?) traction control system. Wonder if the old ECU ‘thought’ the signals from the wheel rotation sensors or speedometer meant that it limited the engine power? It wouldn’t throw an error code because it would have ‘thought’ that this was a normal operational occurrence.

Most probably this is the best explanation. But wouldnt it pop the asc light? Maybe not if the ecu was fried...