Before I build and install my own FreeEMS board, I'd better pickup an easier training project to practise. I bought a 99 Buick Century as my backup car, so that I don't need to finish my job in a hurry
I draw my wiring work on KiCAD
These are my tools
Crimping tool
LC1
OEM O2 VS LSU4 O2
LSU4 O2 is geometry compatible with OEM O2
Study the OEM harness carefully
Draw my layout on paper to clear my idea
This layout is bad, I can't let LC1's ground and O2 signal ground converged too earlier at this point
Crimp a node for fuse soecket
When possible, soldering is always better than crimping
Use heat shrink tube to protect soldering point
The wire from OEM O2 interface was not made of copper, so choose crimping
Ready to install
They must be ground at the same point as ECU were
Have to uninstall relay and fuse box
This is the ground I need
Multiple lugs on the same bolt is not optimal, but I have got no suittable lugs to crimp the three gnd wire together
move it
No problem, it's time to calibrate the LC1 and LSU4 O2 sensor
After all is done, push wire into corrugated tube
Idle is smooth and stable, check engine lamp won't light. The LC1 controller is smart enough to heat the sensor. I evaluate the resistance of OEM heater, It is only 5 omg, that's said the alternator must provide 2A+ current during the driving. And insufficient current can cause injectors squirt less than ECU expected, and a knock will be a result. The most significant effect was improving power/torque curve, the power output was more smooth than before and there's no free gaps on gas pedal
AFR at idle, I think it is a little rich. Using a notebook in order to monitor the AFR is awkward. So I decide to buy a bluetooth adapter to replace the RS232 cable and use my android pad to watch the AFR in real time
Install my own LC1 as OEM O2 sensor emulator
Install my own LC1 as OEM O2 sensor emulator
Last edited by HotCat on Fri Jun 15, 2012 6:36 pm, edited 7 times in total.
Re: Install my own LC1 as OEM O2 sensor emulator(updating)
None of your images work. They disallow based on referrer. You need to put them on imgur or something similar. Sorry to break the news. If you try to load one directly you get this:
Fred.
Please fix the photos and then we'll respond to your post :-)错误
您所请求的网址(URL)无法获取
当尝试读取以下网址(URL)时: http://www.autoimg.cn/album/userphotos/ ... 6f6e23.jpg
发生了下列的错误:
Access Denied.
拒绝访问
Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.
当前的存取控制设定禁止您的请求被接受,如果您觉得这是错误的,请与您网路服务的提供者联系。
本缓存服务器管理员:squid@chinacache.com
Fred.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
Re: Install my own LC1 as OEM O2 sensor emulator(updating)
Sorry for the huge delay to fix image problem, finally I fix them. I decide to buy a bluetooth adapter and watch the lambda in real time on my android padFred wrote:None of your images work. They disallow based on referrer. You need to put them on imgur or something similar.
Fred.
Re: Install my own LC1 as OEM O2 sensor emulator
Good work! :-)
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
- Kennybug
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Re: Install my own LC1 as OEM O2 sensor emulator
cool.... now saving $ for a WB O2 kit...
Re: Install my own LC1 as OEM O2 sensor emulator
Kenny, have you seen this eval kit?
http://14point7.com/SLC-OEM.php
If you order, specify newer firmware for FreeEMS as we're slowly writing code to talk to it to pull digital values out of it and the older fw had a non-friendly way of delivering the numbers.
http://14point7.com/SLC-OEM.php
If you order, specify newer firmware for FreeEMS as we're slowly writing code to talk to it to pull digital values out of it and the older fw had a non-friendly way of delivering the numbers.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
-
- TO92 - Vaguely active
- Posts: 1
- Joined: Fri Sep 07, 2012 8:57 am
Re: Install my own LC1 as OEM O2 sensor emulator(updating)
Can you please share how to do this?HotCat wrote:I decide to buy a bluetooth adapter and watch the lambda in real time on my android pad
J.K Nilsson