My 1.8 isn't running right NEED HELP AND IDEAS AS MY WIFE NEEDS THE CAR FOR WORK

[richw911]

Did you clear the fault codes after fitting it?

didn't realise i needed to thought fitting a new one would cure it . I'm not used to these modern cars i'm used to old fords like my cossie and turbo much easier to work on lol

Is the engine management light still on? Im not sure clearing the codes will make any differance tbh.

yes its still on mate

Well you need to clear the codes. As said make sure the free stuff is done TB clean and it is well serviced.

Then I would get it on vag com and do some data logging and find out for sure what going on.

[cossiemark]

First things to do are:

Clean your throttle body.
Clean up any contacts on earth wires.
Check your spark plugs. (note the condition)
Give it a general service.

They are free/cheap, and give a good indication of the running of the engine.


Disconnecting the MAF and having it run better, means that something is screwing with the fuelling map on the ecu. It sounds as though it's running rich. Unplugging the MAF switches to a safe default fuelling map. Which would cure this.

My guess would be a boost leak, or lambda sensor.

well its goin my mates on Thursday and have it checked on his diagnostic computer so hopefully it should tell him Whats wrong with it.