car losing power

[hnm26]

hi all thx for looking

car is 1.6rxe not modified but it still sounds like it has a big exhaust on it , also when accelerating it goes then just loses power slows down and eventually goes again. any ideas plz?


thanks

 

[driversdomainuk]

reduced back pressure in exhaust (hole) may be is reducing power...

But this would be consistent power loss, but reduced then picks up again...maybe lamda sensor also?

 

[hnm26]

lamda sensor?

sorry im not a mechanic by any stretch.

 

[swordjo]

Coil pack, could be running on 3 cylinders.

 

[Faxo]

Blocked catalyst?