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30/01/2023 3:17 pm
Topic starter
I have this 1999 Lexus Rx300 with about 290k miles on it. The fuel guage keeps misbehaving, reading way below zero. I tried replacing the sensor on the fuel pump but still no luck solving the problem. I also noticed a second fuel sending unit on the passenger side of the tank. Please what's that for, and do I need to change that too?
3 Answers
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30/01/2023 7:40 pm
Your RX300 has a saddle style gas tank so they use 2 sending units.
There's a Main sender on the fuel pump module and a Sub sender on the other side of the gas tank.
They're wired in series so if one of the senders is broken the gauge won't read right.
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31/01/2023 7:29 am
Topic starter
Thanks a lot I'll work on that.