From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Bosch LSU 4.9 oxygen sensor
Date: Sat, 15 Jul 2023 12:55:24 +0800
References: <list-2201068@lancaironline.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-2201068@lancaironline.net>
Message-Id: <27B49FC5-0735-42CE-B3A3-748A0DC2F7F0@gmail.com>

Hi Finn

Sounds like you use the same ALM board as me. All I recall is reading =
that you need a genuine Bosch, but not sure if that was simply sales =
talk.
I switch mine on manually a few moments after startup as per their =
instructions to avoid damaging the sensor.
I=E2=80=99m just in the process of building a micro I call CoPilot to =
manage a few things for me. One is the Wideband switch on after start.

Cheers

Steve Izett


> On 15 Jul 2023, at 1:58 am, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>=20
> I now have about 100 engine hours on my Bosch LSU 4.9 wide band oxygen =
sensor with the Ecotron ALM-Board (0-5V output).
>=20
> Recently I've seen the output intermittently  drop to 0 volts. So I =
replaced the sensor with one I bought on eBay a couple if years ago. =
(0258017025 WideBand O2 Oxygen Lambda Sensor LSU 4.9 for PLX UEGO AEM =
30-2004 New).
>=20
> Well, that doesn't work at all. The ALM-Board outputs zero volts all =
the time.
>=20
> Anyone have experience with the Bosch LSU 4.9 oxygen sensor?
>=20
> Are there versions with different pin-outs but same part number =
(0258017025)?
>=20
> Finn
>=20
>=20
> --
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