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janfi67 · 16th May 2008, 08:35

You're right, when the "no additive" alarm appears, you have to fulfill the additive tank quite "quickly".

According to documentation, you can refuel at least 3 times before the additive tank will be completely empty, for an EV2, it's about 3000 Km. If it is not done in time, it could be problematic to recycle the FAP. Without additive, the burning temperature of particle is 100°C higher than with.

The additive is added during refueling, not during FAP recycling cycle, so the FAP recycling period (which is very different if you drive in a city or on highway) doesn't matter.

Filling the additive tank and changing the FAP is not the same thing, and may be done at different time. For my 807, I remember it’s 120.000 Km for the additive, and 160.000 for the FAP. Exact figures depend of the year/engine of the car.

But I agree with you, if you don’t change the FAP before it is clogged and if an alarm happens during a holiday trip, it’s will be very unpleasant to drive with the engine in safety mode.

It’s a pity PSA doesn’t show to the driver the real FAP recycling period, and the state of the FAP after the recycling (the engine computer has 6 states for a FAP calculated with the differential pressure sensor). For someone with technical knowledge, I’m sure it is a good indication of the FAP shape, and could help to anticipate FAP changing only when it’s really needed.

16th May 2008, 08:35	#6 (permalink)
janfi67 Wizard Join Date: 06 Feb 2006 Location: Strasbourg Age: 45 Posts: 298 Thanks: 0 Thanked 24 Times in 12 Posts Car: 807 Norwest 2.2 HDI Engine: 2.2 HDI/JTD Country of origin:	You're right, when the "no additive" alarm appears, you have to fulfill the additive tank quite "quickly". According to documentation, you can refuel at least 3 times before the additive tank will be completely empty, for an EV2, it's about 3000 Km. If it is not done in time, it could be problematic to recycle the FAP. Without additive, the burning temperature of particle is 100°C higher than with. The additive is added during refueling, not during FAP recycling cycle, so the FAP recycling period (which is very different if you drive in a city or on highway) doesn't matter. Filling the additive tank and changing the FAP is not the same thing, and may be done at different time. For my 807, I remember it’s 120.000 Km for the additive, and 160.000 for the FAP. Exact figures depend of the year/engine of the car. But I agree with you, if you don’t change the FAP before it is clogged and if an alarm happens during a holiday trip, it’s will be very unpleasant to drive with the engine in safety mode. It’s a pity PSA doesn’t show to the driver the real FAP recycling period, and the state of the FAP after the recycling (the engine computer has 6 states for a FAP calculated with the differential pressure sensor). For someone with technical knowledge, I’m sure it is a good indication of the FAP shape, and could help to anticipate FAP changing only when it’s really needed.
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