i bought a seat leon with the ASV engine.
but the car seem to have a problem.
when it reaches 90C temp, it is jerking on idle (on 900rpm).
i have been at some services and nobody knows what the problem is.
diagnostics also has been done, but theres only the dead oil level sensor, which has nothing to do with the jerking.
i hope somebody has an idea to my problem.
it is as follows:
when you start the car, sometimes it starts little bit harder and have lot of white smoke, but only when its >-5C temp outside.
the car starts, runns very fine, and pulls great. but when it reach 90C temp, its jerking on idle.
when you drive it, everything is fine, the problem is only when you stay on idle.
what i can say:
the temp stays at 90C but the 2 coolers are not running, that very funny, i thought they have to cool the engine from overheating.
we checked the vp37 adjustment, the pump is behaving very funny.
for example: sometimes it happens that the car runs fine on idle, NO jerking.
but when it starts to jerk, we checked the vp37 in vcds, the angle is going up and down like crazy. in one second over the max limit, in the next second under the min limit....very strange.
the last service station told me that i have to change the vp37 pump, because they think the problem is there, but i cant believe because the pump was changed 2 years ago. maybe the injectors are damaged ?
if you guys need logs from some groups, i can make logs.
when 90C are not reached, the engine makes NO PROBLEMS, so ONLY ON 90C it beginns to jerk.
what you guys suggest to me ?
agr is already deactivated by software.
and jerking is with ori and with tune software also.
currently i am driving the ori file, till the problem is solved.
thanks and regards