(T) Engine cut at low revs

Hi I have a 1.2 2002 Punto. The head gasket recently blew having had that repaired I now have another problem. When I am accelerating and reach what I consider to be not excessive revs, the power cuts (engine continues to run) and the engine management light shows. If I change up at this point I can accelerate again. This problem happens in every gear and means that accelerating can take a long time (longer than normal!!).

Although not mechanically minded, I do realise that engines have rev limiters. This model does not have a rev counter so I can't give you an indication of when this is happening, but it is lower than normal.

Just wondered if anyone had any ideas?? Thanks

Does it make a strange noise when you accelerate? Or a different noise to normal?

Do a compression test and if that is fine, then sounds like an air intake issue, check you airbox for cracks, holes, check it has a secure fitting with the throttle body and breather pipe is on

There isn't any different noise to normal.

As I said I am not mechanically minded so not sure about doing a 'compression test'? Are you able to explain?

Thanks

Need a compression tester dial, disconnect ecu by 2 clips at the back of engine, screw it into spark plug holes and try to start the engine reading the dial! Shows you how much pressure you get from each cylinder and basically if any power is being lost from the engine. All while the engine is at operating temperature I might add

Could also be a faulty sensor. (Crank sensor? dont know if the Mk2s have a cam sensor)
I believe that when it gets to a certain revs it stops reading puts it into limp mode causing the problems, when you change up it lowers the revs, the sensor reads again and the fault clears.

Might be worth getting the fault codes read.

Some mk2 have a cam sensor some don't, I think most pre 2000 engines didn't have it!

Thanks for the help, think I will get it looked at and get the codes read.