Live fuel meter counts backwards - Automotive Wiring and Electrical


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Live fuel meter counts backwards

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Kasperlu
New User

Mar 29, 2020, 3:42 AM

Post #1 of 4 (939 views)

Live fuel meter counts backwards	Sign In

Hello there,

I would like to ask, after I have changed a new battery my car electronic live fuel consumption meter runs backwards.
Example, max fuel consumption 30.0 L (if i press gas pedal to ground in first gear) and when I drive normally in 5th gear its 5.5 L.
But now it show in reverse, when I drive normally in 5th gear its 24.5 L. And when I speed in 1st gear its 0 L or 0.5 L. .. It seems values in car computer got reversed?

I have Opel Agila B 2009 1.0 or Suzuki Splash *same cars
120.000 km driven.

Anyone with some experience in this?

Kindly,
Kasper

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 29, 2020, 4:47 AM

Post #2 of 4 (937 views)

Re: Live fuel meter counts backwards	Sign In

We don't have that car here in the US so we have no info on that.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Kasperlu
New User

Mar 29, 2020, 5:29 AM

Post #3 of 4 (931 views)

Re: Live fuel meter counts backwards	Sign In

Thanks for replies.

I think, I might have touched jump start cables together… when the battery was dead and fried the consumption sensor...

All the rest in the car computer works fine. Just AS IF fuel consumption meter polarity has reversed from touching the cables? Is this possible from technical point?

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 29, 2020, 5:32 AM

Post #4 of 4 (927 views)

Re: Live fuel meter counts backwards	Sign In

It's always possible to damage modules with surges or reverse polarity but we have no info on what modules control that or how they work on that car.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

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