Hello,
i ´m here because i really need help with my Grande P. 1.4 8V and no one can help me here in Austria or Germany...

Since the day i bought him, the engine was weak and shaking from time to time, but i got it really cheap and thought i find the problem myself...

I changed the sparks (NGK), spark plug leads (NGK), made an oil and filter change, then it was way better but still not perfect, so i also changed the ignition coil (NGK) a few days ago - now the power was back we are at about 90% of Perfection, but sometimes the engine still shakes itself (and then you see it good while standing with the hood open), the best you can feel it when you drive a bit faster away from standing and it feels like it dies or on hills when you hold it and drive away....on the other side today i drove fast, also hills, etc and there was nothing wrong with it

I don´t get it, my garage cleaned the earth cable and says it is the fuel, nothing in error memory, i payed about 150 euros now for this two things and don´t want to spend anymore because most of the time everything is fine...but when it does shake it really is annoying!

May be on your forum someone had this problem or got an idea what part i can change now by myself to stop this shaking - thank´s for reading!

I was thinking electrical connection problems etc but then you said earth cables checked already. Maaybe check again cables also alternator voltage be sure to be around 14v idle.

Clean MAP sensor and intake valve with a proper spray.

No engine management light ever ??

Does it feel like it's jerking when you lift off ?

Check earth cable using jumper cables one to chassis and battery - pole and from chassis to engine block

See FAQ section

Had a similar thing when I had a M3 BMW. Back and forth to the garage for weeks and it turned out to be a Air flow sensor. Thankfully the independent garage I used didn't charge me until they had fixed it.
Hope you get it fixed.

okey thanks Andy Monty i will have a look!

Air Flow Sensor is it the same as Map Sensor?

Update: Today i started the engine, yesterday everything was fine, but today from beginning it was jerking, so i just stopped the engine and wanted to start it again to may be reset it?
But it didnt started for about 2
2 minutes! After it started everything was okey....What can that be?!

There is No MAF sensor. Only one MAP (that's an air temp sensor also).

Check values.