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Odo Doesnt Accumuate Kms Accurately

Hargow

By Hargow,
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Hargow Experienced

Hargow

Posted
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Hi guys

Not sure if i posted in correct section, but my ODO seems to be reading incorrectly for the traveled KM's

I've tested it this week and so far half tank has gotten me 78KMs?

I don't think its my fuel efficiency as my car hardly has anything that would use that much petrol when driving normally

I was expecting at least 150 - 200 on half tank reading but its sitting on 82KM traveled at the moment

Any help would be appreciated

Cheers,

Will

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blind_elk Grand Master

blind_elk

Posted
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Odometer measures distances, not fuel economy.

Poor fuel economy is often the result of a failed engine temp sensor (ECU thinks the engine is still cold, and overfuels the mixtures).

Other possibility is a dirty air filter restricting airflow into the engine.

Hargow Experienced

Hargow

Posted
  • Author
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Odometer measures distances, not fuel economy.

Poor fuel economy is often the result of a failed engine temp sensor (ECU thinks the engine is still cold, and overfuels the mixtures).

Other possibility is a dirty air filter restricting airflow into the engine.

Yes i know it measures the distance but is it possible for it to read inaccurately?

I will be getting my car checked out this week, will be running it on my mates dyno to see if the ODO matches up with the dyno distance traveled

I'll get the engine temp sensor checked as well, other then that any other possibilities?

blind_elk Grand Master

blind_elk

Posted
Posted
Yes i know it measures the distance but is it possible for it to read inaccurately?

I will be getting my car checked out this week, will be running it on my mates dyno to see if the ODO matches up with the dyno distance traveled

I'll get the engine temp sensor checked as well, other then that any other possibilities?

What I'm saying is that just because you have used more fuel than you expected to use doesn't mean the odometer is inaccurate. Presumably it has been accurate until now, so there is no reason why it would suddenly become inaccurate.

And it's "other THAN that".

Hargow Experienced

Hargow

Posted
  • Author
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What I'm saying is that just because you have used more fuel than you expected to use doesn't mean the odometer is inaccurate. Presumably it has been accurate until now, so there is no reason why it would suddenly become inaccurate.

And it's "other THAN that".

Fair enough, I'll see how it goes this Saturday

Hopefully its something as simple as the O2 sensor or Engine temp sensor

GTR-N1 Grand Master

GTR-N1

Posted
Posted
... but my ODO seems to be reading incorrectly for the traveled KM's

I've tested it this week and so far half tank has gotten me 78KMs?

I don't think its my fuel efficiency as my car hardly has anything that would use that much petrol when driving normally

I was expecting at least 150 - 200 on half tank reading but its sitting on 82KM traveled at the moment

Cheers,

Will

What blind_elk is saying is that there has to be something else other than just the odometer that's at fault.

If you're using up half a tank to get as far as 78Kms, something abominable is going on (according to your fuel gauge + tripmeter + calculations of where you've travelled).

2 faults = 2 different sets of symptoms in this case

Hargow Experienced

Hargow

Posted
  • Author
Posted
What blind_elk is saying is that there has to be something else other than just the odometer that's at fault.

If you're using up half a tank to get as far as 78Kms, something abominable is going on (according to your fuel gauge + tripmeter + calculations of where you've travelled).

2 faults = 2 different sets of symptoms in this case

Yeah at the moment I'm still trying to see what else is going on, taking into account everyone's suggestions as well

I wont know until i have it checked out this Saturday, i just thought it was strange as my driving style hasn't changed and i feel i have traveled more then 80KM this week (Liverpool to Wollongong on Saturday which should have yielded at least 80kms on top of whatever i already had).

But yeah look will keep you guys posted on this.

Thanks for your help

  • 2 weeks later...
Hargow Experienced

Hargow

Posted
  • Author
Posted

Update!

Got it checked out and it was the ODO reading incorrectly (half of what its meant to read)

I just got the SINE WAVE box re calibrated so all is reading correctly.

Thanks for your help guys

MYSKY1 Enthusiast

MYSKY1

Posted
Posted
Update!

Got it checked out and it was the ODO reading incorrectly (half of what its meant to read)

I just got the SINE WAVE box re calibrated so all is reading correctly.

Thanks for your help guys

Good stuff Grimmjow. Bet you feel vindicated that it WAS the ODO :-)

Curtis.Cow Community Regular

Curtis.Cow

Posted
Posted

haha im having the same problem with my stock one, and the speedo is half of what it should be :\ maybe i need to get it calibrated? Dunno getting a new cluster and gear sensor this weekend

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