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We bought our NS (2008 / 153k kms) about 6 weeks ago and on the whole we're really pleased, however our fuel consumption running errands around our neighborhood is in the 16l/100kms range. Which is much more than I'd expected.
I have read all of the advice on the inlet manifold cleaning etc, however I was wondering if I could use the OBD II output by way of diagnosis before I take the car off the road to pull it apart (which I will do eventually)
I took delivery of my cheapo ELM32 reader and headed out with my daughters Nexus Android tablet with Torque installed. A few things have become quickly apparent.
1. The Throttle dial is generally at 100% but intermittently springs in to life (even when revs and other dials are reading OK).
2. The boost has been swinging between +16 and -16 and regularly has negative readings in the order of -7.
3 The connection drops out a fair bit (which I understand is a function of my cheapo ELM32 reader).
4 No error codes are showing (not withstanding the one I seem to have self triggered as per below)
Other things that I found out were that for motorway driving the fuel consumption dropped to around 10l/100km (I reset once I got on the m/way). Also I got error P1901 as soon as I got off the motorway and the auto box started behaving like it had no clutch - a real kick in the pants with every ear change - this cleared as soon as I restarted and the error cleared at the end of the day. I understand this is a self triggered fault resulting from the OBDII.
Today's jobs are Oil and Filter, Air and Fuel Filter (and a new pollen filter) but I can't help thinking that the readings I'm seeing as detailed above are indicative of something. This is my first turbo diesel and technology has moved on considerably from the 1.8l Ford Escort diesels I used to own (5l/100km I've just worked out) - so I'm in need of a bit of help. Although I'm not sure I can fully rule out a defective ELM32 reader.
All advice gratefully received.
Regards
Sam
I have read all of the advice on the inlet manifold cleaning etc, however I was wondering if I could use the OBD II output by way of diagnosis before I take the car off the road to pull it apart (which I will do eventually)
I took delivery of my cheapo ELM32 reader and headed out with my daughters Nexus Android tablet with Torque installed. A few things have become quickly apparent.
1. The Throttle dial is generally at 100% but intermittently springs in to life (even when revs and other dials are reading OK).
2. The boost has been swinging between +16 and -16 and regularly has negative readings in the order of -7.
3 The connection drops out a fair bit (which I understand is a function of my cheapo ELM32 reader).
4 No error codes are showing (not withstanding the one I seem to have self triggered as per below)
Other things that I found out were that for motorway driving the fuel consumption dropped to around 10l/100km (I reset once I got on the m/way). Also I got error P1901 as soon as I got off the motorway and the auto box started behaving like it had no clutch - a real kick in the pants with every ear change - this cleared as soon as I restarted and the error cleared at the end of the day. I understand this is a self triggered fault resulting from the OBDII.
Today's jobs are Oil and Filter, Air and Fuel Filter (and a new pollen filter) but I can't help thinking that the readings I'm seeing as detailed above are indicative of something. This is my first turbo diesel and technology has moved on considerably from the 1.8l Ford Escort diesels I used to own (5l/100km I've just worked out) - so I'm in need of a bit of help. Although I'm not sure I can fully rule out a defective ELM32 reader.
All advice gratefully received.
Regards
Sam
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