Just managed to regenerate the gpf/ppf for the first time myself and after having to get 4 forced regenerations prior .
Last forced regeneration was 27th December at 16400 miles
Today my wife came back from town and light back on again mileage at 17500.
After last forced regeneration I purchased an obd reader (ÂŁ20) amazon and downloaded a free car scanner app to access all the obd data.
I went straight into the car and plugged in obd reader and connected phone via cable to the USB and got the car scanner app on the screen of car , the ppf reading was at stage 4 !!
Headed out on the road (b road) and started the revs up to 4000 sometimes 5000 and foot off for 5 to 10 seconds procedure, I have the app set so I can see the temperatures of the 2 exhaust sensors before and after the ppf filter and at what stage the filter is blocked at , approx 5 miles down the road the filter reduced to stage 3 and within 17 miles from starting the procedure the filter was back to 0 and the warning light had gone off.
The biggest thing I think people have to realise is that the exhaust temperature before and after the ppf has to be over 600 degrees c and more ! I Managed to get it up to 645 degrees c at some points but it not the easiest thing to do and theres a bit of an art to keeping it above 600 degrees c and this is where a clear motorway or dual caragway would make the procedure easier i would imagine, don't get me wrong sometimes the revs were up to 5000 but like I say this is the first time in 2 years I have managed to clear the ppf by myself and the obd reader is the only way for myself to know if I'm doing something right when trying to clear it as you can see what the temperatures are at and see the ppf filter blockage stages reduce which let's you see you are on the right track and doing something right !
Incidentally about a month ago I put in a can of JLMgpf cleaner , how well this stuff worked and if it had any bearing in me being able to clear the ppf myself I cannot say ? I also put in a tank of shell expensive petrol a month ago also again wheather this helped me regenerate the ppf who knows but that was my experience today clearing the dreaded thing.
Last forced regeneration was 27th December at 16400 miles
Today my wife came back from town and light back on again mileage at 17500.
After last forced regeneration I purchased an obd reader (ÂŁ20) amazon and downloaded a free car scanner app to access all the obd data.
I went straight into the car and plugged in obd reader and connected phone via cable to the USB and got the car scanner app on the screen of car , the ppf reading was at stage 4 !!
Headed out on the road (b road) and started the revs up to 4000 sometimes 5000 and foot off for 5 to 10 seconds procedure, I have the app set so I can see the temperatures of the 2 exhaust sensors before and after the ppf filter and at what stage the filter is blocked at , approx 5 miles down the road the filter reduced to stage 3 and within 17 miles from starting the procedure the filter was back to 0 and the warning light had gone off.
The biggest thing I think people have to realise is that the exhaust temperature before and after the ppf has to be over 600 degrees c and more ! I Managed to get it up to 645 degrees c at some points but it not the easiest thing to do and theres a bit of an art to keeping it above 600 degrees c and this is where a clear motorway or dual caragway would make the procedure easier i would imagine, don't get me wrong sometimes the revs were up to 5000 but like I say this is the first time in 2 years I have managed to clear the ppf by myself and the obd reader is the only way for myself to know if I'm doing something right when trying to clear it as you can see what the temperatures are at and see the ppf filter blockage stages reduce which let's you see you are on the right track and doing something right !
Incidentally about a month ago I put in a can of JLMgpf cleaner , how well this stuff worked and if it had any bearing in me being able to clear the ppf myself I cannot say ? I also put in a tank of shell expensive petrol a month ago also again wheather this helped me regenerate the ppf who knows but that was my experience today clearing the dreaded thing.
