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02 sensors for ME7.1 and ME7.1.1
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Topic: 02 sensors for ME7.1 and ME7.1.1 (Read 1775 times)
BlackT
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02 sensors for ME7.1 and ME7.1.1
« on: March 04, 2024, 08:00:32 AM »
I have put 02 sensors from ME7.1.1 on ME7.1
I can see 02 voltage and it looks normal, but fuel trims does not work. And I get error
Oxygen (Lambda) Sensor B1 S1: No Activity
Oxygen (Lambda) Sensor B2 S1: No Activity
They have different 02 plug, but 02 sensors schoud be same or?
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IamwhoIam
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Re: 02 sensors for ME7.1 and ME7.1.1
« Reply #1 on: March 05, 2024, 10:13:27 AM »
define "normal" voltage please? also, what kind of ME7.1.1 exactly?
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I have no logs because I have a boost gauge (makes things easier)
prj
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Re: 02 sensors for ME7.1 and ME7.1.1
« Reply #2 on: March 05, 2024, 10:31:02 AM »
Are you sure one isn't LSU4.2 and the other LSU4.9?
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PM's will not be answered, so don't even try.
Log your car properly
-
WinOLS database
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Tools/patches
BlackT
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Re: 02 sensors for ME7.1 and ME7.1.1
« Reply #3 on: March 05, 2024, 01:18:17 PM »
Sorry for lack of information, I forget that there is a so many variants od ME7.1.1
In my case I am talking about 2.7 TT engines
ECU is ME7.1 AMX 2.8 N/A, and probes are from M7.1.1 BEL
They are both narowband only they have different connector.
When I say normal voltage that mean it folows what my external afr gauge show( when it is lean voltage is below 0.45 V goes to 0.1V and when it is rich it goes to 0.9.
It show normal voltage depend how engine work like any other narowband probe
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prj
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Re: 02 sensors for ME7.1 and ME7.1.1
« Reply #4 on: March 06, 2024, 04:36:12 AM »
There are many different types of narrowband sensors.
Buy the correct ones for your engine and don't waste time.
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PM's will not be answered, so don't even try.
Log your car properly
-
WinOLS database
-
Tools/patches
BlackT
Hero Member
Karma: +79/-40
Offline
Posts: 1425
Re: 02 sensors for ME7.1 and ME7.1.1
« Reply #5 on: June 09, 2024, 01:19:31 AM »
Problem was wrong set up for rear O2 off. I accidentally turned off diagnostic for front 02.
Now trims are working and no more DTC
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