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Thanks Steve.
I just ordered a new one from eBay (Wideband Oxygen Sensor 5-wire 0258017025 LSU4.9 17025 For PLX UEGO AEM 30-2004, $21.39 w/tax).
After fiddling a bit with the connector it seems to work. Need to check it in flight.
Now I'm beginning to think that the original sensor may be OK and it's just a connector problem.
I'll have to reread the manual. I thought it was supposed to self heat before seeing exhaust temps. I supply power to the ALM board from the same switch that powers the EC3.
Finn
On 7/15/2023 12:55 AM, Stephen Izett stephen.izett@gmail.com wrote:
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’m 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:
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).
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).
Well, that doesn't work at all. The ALM-Board outputs zero volts all the time.
Anyone have experience with the Bosch LSU 4.9 oxygen sensor?
Are there versions with different pin-outs but same part number (0258017025)?
Finn
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