The technician diagnosed a DPF problem and fitted a new EEC DPF, he reset the ECU and removed the fault codes, but did not carry out a forced regeneration as directed in our fitting instructions. His customer collected the van and drove for about 20 miles, then all the same fault codes returned. At this stage he took the van to the Vauxhall dealership, where guess what he said? “It’s an aftermarket DPF, they don’t work; you need to fit an OE DPF” (!) At this point I visited the garage with my distributor, and explained that there is nothing wrong with the DPF, with this van having a Renault engine what he must do is carry out an engine oil and filter change, reset the ECU (using the Renault CLIP machine or a tool with the same capability) remove all fault codes and then complete a forced regeneration, followed by an ECU reset, it is then advisable to go for a drive for about 20 minutes at over 2500RPM, this should resolve the issue.
It is always advisable when any DPF related fault code appear to check the engine oil for diesel contamination, this is a common problem that can occur during the DPF regeneration process, which operates by sending up to 8 time the amount of fuel through the engine into the DPF which acts like a furnace raising the temperature to over 550 degrees that burns off all the Particulate Matter.
A build-up of carbon on the injectors, inlet valves, exhaust valves, turbo, EGR value, glow plugs are the major contributor to a blocked DPF. By using the EEC 6in1 DPF solution you can remove this problem, keeping these components free from carbon and primarily reducing the temperature at which particulate
matter burns within the DPF.
