Car has a bit of a problem, nothing massive, but since has got no service history at all figgured id better try to get all the little problems and bits done properly as doesnt appear to have been looked after very well.
Car can be a little jerky when i let off the gas at low revs, same when im gently an dtrying to holld steady using the throttle in trafic at low revs, also pause a little under sudden acceleration. All the symptoms are fairly minor so is more of an annoyance than a serious issue at the moment, but want to get everything on the car just right.
Having read nwmlarge's guide about lambda sensors i thought it would be an idea to investigate mine since the car has done just over 50k and going on the lack of service history i doubt they have changed and my problems fit some of the symptons of a bad lambda sensor.
So ive invested in a EOBD reader to get some data and information out of the car, but dont know enough to interpret what ive got!!
According to the software it is detecting three lambda sensors. Two in bank 1 (front i assume) and one in bank 2(rear), the car is a 2001 HGT Euro 3, is this correct are there three lamda sensors(from what ive googled there is a left, right front sensor and a rear?)?
Ive attached a screen shot of the Lambda voltage graph for one front sensor and the rear one(lambda.jpg) from everything ive managed to find on google i would have expected a more uniform pattern to the voltage curve, can anyone coment on the graph and if this is about right or not?
Thebottom graph on the second attachment(lambda2.jpg) is the data im getting from the second front lambda sensor, the voltage is hardly changing and just sitting arounf .35 V! There is also a test option on the software I have that gives all sorts of data and readings from the sensor, works fine for the other two sensors but just gives an error when i try to test this sensor. Assuming my car has three lambda sensors does this mean this one is broken? And should i be looking to replace the other two sensors? (based on the data from the graph and my guess that they are 50k old)
And last question can anyone recomend a good universal brand of sensor or am i better buying NKG or Fiat OE ones?
Ignore the top right graph.
Thanks
Car can be a little jerky when i let off the gas at low revs, same when im gently an dtrying to holld steady using the throttle in trafic at low revs, also pause a little under sudden acceleration. All the symptoms are fairly minor so is more of an annoyance than a serious issue at the moment, but want to get everything on the car just right.
Having read nwmlarge's guide about lambda sensors i thought it would be an idea to investigate mine since the car has done just over 50k and going on the lack of service history i doubt they have changed and my problems fit some of the symptons of a bad lambda sensor.
So ive invested in a EOBD reader to get some data and information out of the car, but dont know enough to interpret what ive got!!
According to the software it is detecting three lambda sensors. Two in bank 1 (front i assume) and one in bank 2(rear), the car is a 2001 HGT Euro 3, is this correct are there three lamda sensors(from what ive googled there is a left, right front sensor and a rear?)?
Ive attached a screen shot of the Lambda voltage graph for one front sensor and the rear one(lambda.jpg) from everything ive managed to find on google i would have expected a more uniform pattern to the voltage curve, can anyone coment on the graph and if this is about right or not?
Thebottom graph on the second attachment(lambda2.jpg) is the data im getting from the second front lambda sensor, the voltage is hardly changing and just sitting arounf .35 V! There is also a test option on the software I have that gives all sorts of data and readings from the sensor, works fine for the other two sensors but just gives an error when i try to test this sensor. Assuming my car has three lambda sensors does this mean this one is broken? And should i be looking to replace the other two sensors? (based on the data from the graph and my guess that they are 50k old)
And last question can anyone recomend a good universal brand of sensor or am i better buying NKG or Fiat OE ones?
Ignore the top right graph.
Thanks
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