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Frank, that's nearly double the mileage I've been getting out of CHK259.

I didn't make that trip in the March due to changing requirements - needed a bigger vehicle in the end. Now it's been sitting in the garage all week so I haven't got any further. I'll be interested to see your results Qwerty132, when you get them.

I've got a short open road trip to make over the weekend. It's all straight and flat (ie not so much brake use) so I'll see how hot the front wheels are after that. I suspected the right hand wheel might have been a little hotter than the left after checking the other day, so going on your...

I've been out in the March today, and for the trip home I pulled off the hubcaps. Once back in the garage I felt around the wheel centres for heat. The rear wheels (drum brakes) were slightly warm; the front wheels were moderately hot. There may have been a slight difference with the right hand...

Lovely car, worth keeping sequestered if you don't have time to fix it right now. Mine's a '72 P6, "Tobacco Leaf" with the tan interior. I've owned it for 13 years, gave it a bare-metal respray 10 years ago. For various reasons it hasn't been on the road since 2002, but I'm currently...

Frank, the new Dunlops would have to be an IMPROVEMENT on the ****ty factory Toyo Kogyos with their floppy sidewalls! Wheel alignment and brakes are good, I can confirm. However I'll do the hub caps off check just to be sure. Overdrive is on! Engine is very clean - I checked it when I bought it...

That's the crunch - our March sounds great, goes great, doesn't appear to have any obvious problems, yet the fuel consumption is rotten. Where do I look next?

Yes, it's quite frustrating isn't it? Without a cable, the software or sufficient knowledge to use it properly, I'm wondering whether paying for a diagnostic check would be worthwhile, or simply flushing money down the drain? There has to be something going on here - other Micra/March owners...

Hi Micra fans, We haven't used the March much lately thanks to catching buses to work, etc, but I've had it out a couple of times in the last week after learning how to put my multimeter into an "averaging" mode which dampens the mad oscillations of the digital display. I can now see the...

The ECU diagnostic showed no fault. But I suppose it is a possibility. Starting the engine cold results in a steady voltage that climbs from zero up to about 0.3V. As soon as I start to back the car out of the garage (introducing load) the voltage starts to go silly. I've looked up the specs...

You're right, that Topbuzz article contradicts itself. 1hz is by definition 1 cycle per second. Most of what I've read seems to indicate 1hz is pretty much standard. If using the multi-meter method of testing the sensor then obviously the relationship between the frequency of the sensor and...

If you swat up on lambda sensors, you will learn that a square-wave voltage fluctuation is normal behaviour. But how random should it be? I couldn't see any pattern in what mine is doing.

The results are in! And they're not encouraging. Driving around the city today I witnessed little coherence in the readings on the multimeter. I mostly saw a randomly fluctuating voltage no matter what the car was doing. The only time I ever saw a solid voltage was at moderate to high revs...

And inside the car: (The voltage shown on the meter is the lambda sensor at idle with a cold engine).

OK Micra Fans, I've just rigged up my multimeter and will soon embark on a real-world test drive through city traffic to see what's happening with the lambda sensor. Here's how the test rig looks under the bonnet:

My 10 kms per litre sounds positively frugal by comparison! As you can see if you read the whole thread, my testing and experimenting has been somewhat inconclusive so far. I'm going to jury rig a couple of wires into the cabin this morning and drop my wife off at work, which should give me a...

Frank, perhaps if you place a southern hemisphere March auto in a container and ship it north of the equator (thereby inverting it), when you extract it at the other end it will have Micra badges and a CVT trannie. I'll post again in the morning after I've had a chance to do a test drive and...

Hi Frank, There's nothing oddball about the 4-speed auto - nearly every JDM March in the country has one, and most NZ-new Micras too. The manuals are hard to find here, and the CVT is never seen. It might be the other way round and the CVT could be the rarer of the two when worldwide production...

I've just done a little more testing with the multimeter. An obliging wife on throttle duty maintaining a fully warmed engine at around 2-3000 rpm (going by sound) produced a lambda sensor voltage of approximately 0.9V. Dropping the throttle off made the voltage briefly fall back to zero...

Here is some useful info on lambda sensors and how to check them: http://www.picoauto.com/applications/lambda-sensor.html Can anybody tell me how to locate the return fuel line?