As per title.
My ABY Avant keeps going to limp mode as regards the boost.
I've checked for boost leaks and found a big one with tear hole at a joint in an oem pipe, pipe replaced.
Small leaks at plastic injector seats - cured.
N75 changed to a second hand good one.
Pipe for the N75 valve to the waste gate replaced.
Still the same problem. I now personally understand other people's annoyance with similar threads in the past.
When one drives the car on initial cold start up it will boost. The warming up of hte engine only appears to make slight difference in that one a bit warm it is b bit more likely to go limp mode, but to be honest I may be only imagining this subtle difference.
When it goes into limp mode on the next wot, it will only go to 0.5 bar on the gauge.
If one turns the ignition off for a split second it will boost fine on the next wot, on the subsequent one it will be back to limp .5 bar.
If one just drives on a very light throttle after finding it in limp mode after an attempted wot, the boost sometimes comes back without the need to cut the ignition to restore boost.
It should only boost to 1.5, but the after market gauge has shown as high as 1.8 on the gauge, and then it settles back down a more normal 1.5bar.
Is is like it is over boosting and the Motronic ECU's safety of the limp mode is cutting in, which is understandable, but I can't work out what is causing it to over boost / go into limp mode ?
Fried ABY with K-24.
Doing my head in.
Brakes are pulsing and I think it needs a bomb, flushed the fuluid full lat night no difference, a whole other thread.
These cars !!!!
Any input appreciated.
My ABY Avant keeps going to limp mode as regards the boost.
I've checked for boost leaks and found a big one with tear hole at a joint in an oem pipe, pipe replaced.
Small leaks at plastic injector seats - cured.
N75 changed to a second hand good one.
Pipe for the N75 valve to the waste gate replaced.
Still the same problem. I now personally understand other people's annoyance with similar threads in the past.
When one drives the car on initial cold start up it will boost. The warming up of hte engine only appears to make slight difference in that one a bit warm it is b bit more likely to go limp mode, but to be honest I may be only imagining this subtle difference.
When it goes into limp mode on the next wot, it will only go to 0.5 bar on the gauge.
If one turns the ignition off for a split second it will boost fine on the next wot, on the subsequent one it will be back to limp .5 bar.
If one just drives on a very light throttle after finding it in limp mode after an attempted wot, the boost sometimes comes back without the need to cut the ignition to restore boost.
It should only boost to 1.5, but the after market gauge has shown as high as 1.8 on the gauge, and then it settles back down a more normal 1.5bar.
Is is like it is over boosting and the Motronic ECU's safety of the limp mode is cutting in, which is understandable, but I can't work out what is causing it to over boost / go into limp mode ?
Fried ABY with K-24.
Doing my head in.
Brakes are pulsing and I think it needs a bomb, flushed the fuluid full lat night no difference, a whole other thread.
These cars !!!!
Any input appreciated.
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