Chumpaumpalumpa
Proven Member
- 1,554
- 303
- Jun 16, 2014
-
La Habra,
California
Hi everyone. I am looking for a schematic for the AEM UEGO Digital Wideband gauge. The output to the ECM is faulty and I need to fix it so I can have the car tuned.
I verified this all with a multimeter to confirm that link is logging RawVolts correctly and it is. The issue with the gauge is that it only sweeps from .84v-4.45v. More than that, when the gauge is pegged at 10.0 it puts out .84v to the ECU. Same for 10.1-11.6 or so. It only puts out a .84v signal. At 11.7 on the gauge, the output voltage starts to climb linearly up to 4.45v and what is logged is accurate from 20 AFR down to 11.7. The gauge itself reads accurately. Ithe the output of the gauge that is the problem. Could this be from a faulty pot? I would love a schematic so I can take the buggar apart and fix what I need to.
I am positive the gauge output is at fault here and it is not an AEM to Link compatibility issue. I know because I back probed the gauge output and it agreed with link on everything.
Thanks in advance.
I verified this all with a multimeter to confirm that link is logging RawVolts correctly and it is. The issue with the gauge is that it only sweeps from .84v-4.45v. More than that, when the gauge is pegged at 10.0 it puts out .84v to the ECU. Same for 10.1-11.6 or so. It only puts out a .84v signal. At 11.7 on the gauge, the output voltage starts to climb linearly up to 4.45v and what is logged is accurate from 20 AFR down to 11.7. The gauge itself reads accurately. Ithe the output of the gauge that is the problem. Could this be from a faulty pot? I would love a schematic so I can take the buggar apart and fix what I need to.
I am positive the gauge output is at fault here and it is not an AEM to Link compatibility issue. I know because I back probed the gauge output and it agreed with link on everything.
Thanks in advance.
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