Fuel gauge stopped working after TTS installation
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Cruiser
Joined: Sep 2009
Posts: 189
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From: Minneapolis
Fuel gauge stopped working after TTS installation
So last night I installed my after-market pipes, and air cleaner, and also used my TTS Mastertune for the first time.
When looking for the diagnostic plug to use with the TTS I pulled up the dashboard (the part with the speedometer). I didn't disconnect anything under the dashboard, just looked and nothing was the right shape to be the diagnostic part.
So when I go to start the bike my fuel gauge tells me I have no fuel, and the low fuel warning light is on. I know i was at about half a tank before I started this project.
So here's the question. Could my TTS reprogramming have affected the fuel gauge?
Or is it more plausible that I accidentally broke a wire when I looked under my dsahboard?
Smething else? Where are the fuel level sensor wires?
edit: Forgot to say, I installed things in this order: TTS mastertune first. Then before I ran the bike I installed the pipes, which necessitated removing the battery and battery holder to get the rear O2 sensor back in. Put it all back together and then saw the problem above. Not sure if pulling the battery would've affected anything.
When looking for the diagnostic plug to use with the TTS I pulled up the dashboard (the part with the speedometer). I didn't disconnect anything under the dashboard, just looked and nothing was the right shape to be the diagnostic part.
So when I go to start the bike my fuel gauge tells me I have no fuel, and the low fuel warning light is on. I know i was at about half a tank before I started this project.
So here's the question. Could my TTS reprogramming have affected the fuel gauge?
Or is it more plausible that I accidentally broke a wire when I looked under my dsahboard?
Smething else? Where are the fuel level sensor wires?
edit: Forgot to say, I installed things in this order: TTS mastertune first. Then before I ran the bike I installed the pipes, which necessitated removing the battery and battery holder to get the rear O2 sensor back in. Put it all back together and then saw the problem above. Not sure if pulling the battery would've affected anything.
Last edited by Kytann; Apr 4, 2010 at 09:37 AM.
Elite HDF Member
Joined: Sep 2008
Posts: 4,440
Likes: 148
From: Northwest
Check under the dash again.... the TTS programming itself won't kill your gas gauge... you've fudged a wire or terminal somewhere.
I gather you found the ECM diaganostic connector?.... it's behind the "electrical" side panel...
I gather you found the ECM diaganostic connector?.... it's behind the "electrical" side panel...
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Cruiser
Joined: Sep 2009
Posts: 189
Likes: 0
From: Minneapolis
Figured it out.
I'll write about it here so that someone else doesn't do the same thing.
The gas gauge doesn't jump up and down when you go over bumps because the computer takes a bunch of readings over a period of time and averages them.
Well either when I pulled the battery (most likely) or when I flashed the ECU it reset all of those values to zero. So naturally it read zero at first.
I noticed this when I went for a ride, and the gauge slowly climbed. Not fast enough to watch it, but every time I looked down it was slightly higher. Kinda interesting to watch my range readout increase instead of decrease.
So yeah, moral of this story is to have more patience before you assume something is broken
I'll write about it here so that someone else doesn't do the same thing.
The gas gauge doesn't jump up and down when you go over bumps because the computer takes a bunch of readings over a period of time and averages them.
Well either when I pulled the battery (most likely) or when I flashed the ECU it reset all of those values to zero. So naturally it read zero at first.
I noticed this when I went for a ride, and the gauge slowly climbed. Not fast enough to watch it, but every time I looked down it was slightly higher. Kinda interesting to watch my range readout increase instead of decrease.
So yeah, moral of this story is to have more patience before you assume something is broken
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