Engine cutting out

[Rylee]

Hi, I have a seat Leon cupra 07 and this only happens occasionally but when I come to a stop with clutch down my engine dies. It idles about 750 revs, when I come to a stop it goes to about 500 and jumps back up regularly but occasionally dies. I’ve checked all fuses, earths etc and nothing has worked. The only things I’ve done to the car was cam follower for fuel pump, forge spacer(dump valve) and it came with a cone filter attached to the old air box. I have no idea what the problem is. I plugged a scanner in and it comes up with various codes like ecm relay which I changed but still nothing. Any help would be much appreciated. Thanks

 

[Rylee]

Anyone have similar? I’ve read up about it and heard it could be the throttle body so I’ll give that a clean and reset it unless anyone knows the problem?

 

[gurpz94]

Check your MAF sensor, try to unplug it and see if the car runs smoothly. You could also do a throttle body adaption if you have an OBDII device.

 

[Rylee]

Check your MAF sensor, try to unplug it and see if the car runs smoothly. You could also do a throttle body adaption if you have an OBDII device.

Yes mate it runs a lot better unplugged haha

 

[gurpz94]

Yes mate it runs a lot better unplugged haha

Grab a new MAF sensor and you're good to go

 

[Rylee]

Grab a new MAF sensor and you're good to go

Yesss thanks a lot mate, much appreciated