£40 petrol equals 150 (ish) miles.....
Discussion
As the heading says.
I put £40 in the beasts belly, within 150 miles the beats needed more liquid food:rolleyes:
The thing is I have not being heavy on the right foot, I thought it was eating a lot, so I set the trip. Then took it easy for a while (150miles to be exact) then had to fill up again.:nuts:
Seems a bit ....Hmmmmm....rich ?
Whats your do ?
I would have thought it needed a service, but only had one a month ago!!!!!!!
Any Ideas ? (heads off to the petrol station AGAIN)
I put £40 in the beasts belly, within 150 miles the beats needed more liquid food:rolleyes:
The thing is I have not being heavy on the right foot, I thought it was eating a lot, so I set the trip. Then took it easy for a while (150miles to be exact) then had to fill up again.:nuts:
Seems a bit ....Hmmmmm....rich ?
Whats your do ?
I would have thought it needed a service, but only had one a month ago!!!!!!!
Any Ideas ? (heads off to the petrol station AGAIN)
Last fill gave me 258 miles - and I still had 11 litres left and no low fuel warning. I'm obviously not trying hard enough 
. That was ordinary unleaded. I find mine runs a bit better on the oridnary stuff and therefore its not worth the extra expense of Optimax. Have worked out 27mpg on some long runs before now. I may be able to better that now.
. That was ordinary unleaded. I find mine runs a bit better on the oridnary stuff and therefore its not worth the extra expense of Optimax. Have worked out 27mpg on some long runs before now. I may be able to better that now.Check the exhaust cans if they are soot black not a grey colour you are certainly burning too much fuel. Could be one or both Lamda (or O2)sensors.
You can use an analogue volt meter to perform the check. There's likely 3 wires coming out of the sensors One 12V positive, one earth and the other is the feedback signal to the ECU. Its this one and the earth you check across. Ideally you need to hook up a temp wire link and drive the car with a passenger to monitor the meter and record the results. The following is an extract from a doc I have.
The exhaust gas oxygen sensor (EGO or O2), or lambda sensor, is the key sensor in the engine fuel control feedback loop. The computer uses the O2 sensor's input to balance the fuel mixture, leaning the mixture when the sensor reads rich and richening the mixture when the sensor reads lean.
Lambda sensors produces a voltage signal that recognises the amount of unburned oxygen in the exhaust. An oxygen sensor is essentially a battery that generates its own voltage. When hot (at least 250 degrees c.), the zirconium dioxide element in the sensor's tip produces a voltage that varies according to the amount of oxygen in the exhaust compared to the ambient oxygen level in the outside air. The greater the difference, the higher the sensor's output voltage.
Sensor output ranges from 0.2 Volts (lean) to 0.8 Volts (rich). A perfectly balanced or "stoichiometric" fuel mixture of 14.7 parts of air to 1 part of fuel gives an average reading of around 0.45 Volts.
The lambda sensor's output voltage doesn't remain constant, however. It flip-flops back and forth from rich to lean. Every time the voltage reverses itself and goes from high to low or vice versa, it's called a "cross count." A good O2 sensor on a injection system should fluctuate from rich to lean about 1 per second. If the number of cross counts is lower than this, it tells you the O2 sensor is getting sluggish and needs to be replaced.
Most lambda sensors will cycle from rich to lean in about 50 to 100 milliseconds, and from lean to rich in 75 to 150 milliseconds. This is referred to as the "transition" time. If the O2 sensor is taking significantly longer to reverse readings, this too is an indication that it is getting sluggish and may need to be replaced.
You can use an analogue volt meter to perform the check. There's likely 3 wires coming out of the sensors One 12V positive, one earth and the other is the feedback signal to the ECU. Its this one and the earth you check across. Ideally you need to hook up a temp wire link and drive the car with a passenger to monitor the meter and record the results. The following is an extract from a doc I have.
The exhaust gas oxygen sensor (EGO or O2), or lambda sensor, is the key sensor in the engine fuel control feedback loop. The computer uses the O2 sensor's input to balance the fuel mixture, leaning the mixture when the sensor reads rich and richening the mixture when the sensor reads lean.
Lambda sensors produces a voltage signal that recognises the amount of unburned oxygen in the exhaust. An oxygen sensor is essentially a battery that generates its own voltage. When hot (at least 250 degrees c.), the zirconium dioxide element in the sensor's tip produces a voltage that varies according to the amount of oxygen in the exhaust compared to the ambient oxygen level in the outside air. The greater the difference, the higher the sensor's output voltage.
Sensor output ranges from 0.2 Volts (lean) to 0.8 Volts (rich). A perfectly balanced or "stoichiometric" fuel mixture of 14.7 parts of air to 1 part of fuel gives an average reading of around 0.45 Volts.
The lambda sensor's output voltage doesn't remain constant, however. It flip-flops back and forth from rich to lean. Every time the voltage reverses itself and goes from high to low or vice versa, it's called a "cross count." A good O2 sensor on a injection system should fluctuate from rich to lean about 1 per second. If the number of cross counts is lower than this, it tells you the O2 sensor is getting sluggish and needs to be replaced.
Most lambda sensors will cycle from rich to lean in about 50 to 100 milliseconds, and from lean to rich in 75 to 150 milliseconds. This is referred to as the "transition" time. If the O2 sensor is taking significantly longer to reverse readings, this too is an indication that it is getting sluggish and may need to be replaced.
I know what you mean, since my last service from a dealer I shall never be using again, my Tam has black 'soot' on the exhausts, uses more oil, and petrol consumption has risen (have put £90 worth in a week and a half!!!!) When you drive the car virtually every day, you tell sense even minor changes to the car, and I can 'sense' that spending £1500 all in for my last service was a huge waste of money!
It was running perfect before the service! I shall be trying TVR Power next time.
It was running perfect before the service! I shall be trying TVR Power next time.
Lowest I get is about 180 miles when i'm having fun & the wife isn't in the car this can rise right up to 280 miles when on a long run with the Mrs sat next to me. She's a new form of ABS (Automatic Braking System)
If I get tempted by someone like the Lotus Elise on Sunday on the M62 coming back from Liverpool then the grief rises to such a point that accelerating further is no longer an option (did destroy it first though!)
Thanks
Howard.
If I get tempted by someone like the Lotus Elise on Sunday on the M62 coming back from Liverpool then the grief rises to such a point that accelerating further is no longer an option (did destroy it first though!)
Thanks
Howard.
kippax said:
Lowest I get is about 180 miles when i'm having fun & the wife isn't in the car this can rise right up to 280 miles when on a long run with the Mrs sat next to me. She's a new form of ABS (Automatic Braking System)
If I get tempted by someone like the Lotus Elise on Sunday on the M62 coming back from Liverpool then the grief rises to such a point that accelerating further is no longer an option (did destroy it first though!)
Thanks
Howard.
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