Cdti loss of power below 2000 rpm - Page 2

Vossy · 27th May 2017, 14:24

I did unplug my MAF a while ago to see if there was any difference, on mine it did put on the EML that I had to have cleared at a garage, unplugging mine didn't make any difference, these are just slow cars at low revs.

marinabrian · 27th May 2017, 21:44

This can also be a symptom of the EGR not closing correctly if still fitted Stan

Sticking EGR actuators give almost identical symptoms to that of a duff MAF sensor, and unplugging the MAF effectively masks the symptoms as when running in default mode the ECM will not send the PWM signal to the EGR actuator solenoid meaning it will not open

I would unplug the electrical connection to the EGR first, to see if the EGR is being reticent to close fully, before condemning the MAF

Brian

27th May 2017, 14:24	#11
Vossy Why? ... MG ZT+ Cdti Auto saloon. Join Date: Jul 2014 Location: Blockeswich, South Staffs Posts: 1,549 Thanks: 173 Thanked 483 Times in 330 Posts	I did unplug my MAF a while ago to see if there was any difference, on mine it did put on the EML that I had to have cleared at a garage, unplugging mine didn't make any difference, these are just slow cars at low revs. Last edited by Vossy; 27th May 2017 at 14:43..

27th May 2017, 21:44	#12
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	This can also be a symptom of the EGR not closing correctly if still fitted Stan Sticking EGR actuators give almost identical symptoms to that of a duff MAF sensor, and unplugging the MAF effectively masks the symptoms as when running in default mode the ECM will not send the PWM signal to the EGR actuator solenoid meaning it will not open I would unplug the electrical connection to the EGR first, to see if the EGR is being reticent to close fully, before condemning the MAF Brian