Hi. My punto had just decided to start idling really roughly and had had no power. As I accelerate it kind of jerks, smooths out at 3000 rpm ish but has no power. I already changed the plugs, coil packs and lambda sensor, local fiat dealer was no help as it’s not storing a fault

Lots of threads about the same subject on these forums, so have a look to get some idea.


My thoughts

• Air leaks : pcv hoses ?
• exhaust manifold gasket leak? broken studs?
• fuel trims?
• blocked exhaust ? catalyst ? mufflers?

Also map/ maf sensor, give them a good clean.

Getting a new MAP sensor to give that a try.
Hopefully getting a better diagnostic done as well

Buy only original Bosch map sensor. Any other brand will put your car into limp mode. Your car also has MAF sensor, i believe.

Yeh Iam trying one from a very low mileage car to try and eliminate that