skippyboyo1 Posted July 4, 2017 Share Posted July 4, 2017 I have googled this but cant seem to find anything on this subject. I have a 2003 03 d4d Avensis that i run around in etc, its always been a good car for a banger so over the years although i have other cars i cant see the point of parting with it. The car has 103,000 miles on the clock was owned by my dad before me for years and i recently decided to start towing with it, i fitted a tow bracket and set off from Yorkshire to cornwall with my trailer to collect two quad bikes. Once i picked them up the load was heavy for sure borderline on what i can tow with legally on my licence but all safe etc, car did the job well actually on the 300 mile trip back. so onto my question, the car has always been slugish but always ran clean ie no smoke etc etc. once i dropped the load off the car felt like it was up on power at least 25%, i put this down too driving so far at 60mph with all that weight on the back so this was just in my head but over the last few days i can say 100% its up on power indeed 25% maybe more. why is this? do you think with running the engine hotter ie pulling weight its cleaned itself out or something? the difference really is day and night. Quote Link to comment Share on other sites More sharing options...
curious Posted July 4, 2017 Share Posted July 4, 2017 The sustained higher EGT'S you were running due to the load you were carrying has helped clean through the DPF and associated parts. This will result in a lower back pressure and more torque and bhp throughout the RPM range. To keep it clean, use a good quality clean burning fuel, and a good run at least once every 2 weeks. Hope that helps Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted July 4, 2017 Share Posted July 4, 2017 i have the exact same estate 2003 2.0d4d , i drove the avensis all the way from the uk to austria fully loaded and ragged it the whole way. as the drive got longer the car became more punchy, faster and hugely more fuel efficient. i got 1100 miles done in under 2 tanks in the end whilst doing 100mph+ the car is out there now with family and runs like a dream, ow and by the way mine has now done 270k miles. most reliable car that ive ever had and to be honest its the car ive actually treated the worst (yes i feel guilty). i destinctly remember mid way thru france when i began planting my foot for about 15-20 mins there was huge clouds of black smoke coming from the rear, strange because its never smoked, after that the smoke cleared the car began transforming. i think these d4d engine build up a lot of crap over time but once they been forced to clear out they become good as new. ow i will add before i left i gave the car a full tank of Shell Nitro Diesel. anyone who says this fuel is no different is stupid, this fuel does work on diesels and clears them up! Quote Link to comment Share on other sites More sharing options...
HarleyFDMD Posted July 4, 2017 Share Posted July 4, 2017 As curious has said, you have probably unintentionally done a rather intensive dpf regeneration. We get it at work with the diesel mazda 2.2s Run them upto temp and using our laptop you just sit them at 4000rpm for half hour in neutral. It sounds brutal but it actually does them a world of good. They suffer with carbon build up in the cylinder heads and dpf blockages so a forced regeneration aids clearing them out and the extreamly high egt's burns all the crap out of the dpf. We obviously have to sit and monitor oil temp, water temp etc while doing it though Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted July 4, 2017 Share Posted July 4, 2017 As curious has said, you have probably unintentionally done a rather intensive dpf regeneration. We get it at work with the diesel mazda 2.2s Run them upto temp and using our laptop you just sit them at 4000rpm for half hour in neutral. It sounds brutal but it actually does them a world of good. They suffer with carbon build up in the cylinder heads and dpf blockages so a forced regeneration aids clearing them out and the extreamly high egt's burns all the crap out of the dpf. We obviously have to sit and monitor oil temp, water temp etc while doing it though We have this with the Mercedes Sprinter ambulances, the crews leave them running for lengthy periods of time in the ambulance car parks and over time it clogs up the DPF and throws an EML light on the dash. We then get called out to carry out an on site DPF regeneration and tell them to not leave the vehicle running when not being used. They never listen though! Quote Link to comment Share on other sites More sharing options...
ibby Posted July 5, 2017 Share Posted July 5, 2017 2003 d4d comes with a 116bhp 1cdftv engine. It is the last of tge cast iron blocks. It does not have any dpf of other major Electrics. Has faults like air mass, egr, some cars can have split intrrcoolers. I suggest to service egr, and housing Clean air flow sensor Quote Link to comment Share on other sites More sharing options...
skippyboyo1 Posted July 24, 2017 Author Share Posted July 24, 2017 2003 d4d comes with a 116bhp 1cdftv engine. It is the last of tge cast iron blocks. It does not have any dpf of other major Electrics. Has faults like air mass, egr, some cars can have split intrrcoolers. I suggest to service egr, and housing Clean air flow sensor /QUOTE] thats not relative to anything i said? i cant fix something that is not broken? Quote Link to comment Share on other sites More sharing options...
ibby Posted July 24, 2017 Share Posted July 24, 2017 No.. I was just correcting some members for thinking this had dpf Quote Link to comment Share on other sites More sharing options...
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