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2006-2012 Eclipse (General 4G) General discussion and information about the 2006-2012 (4th Generation) Eclipse.


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Old March 25th, 2020, 08:55 PM   #1 (permalink)
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Code Reader.

I got this code reader at walmart for 60$. I think it's accurate and very useful. I was just looking at my GS live readings. But not knowing much on what im looking at has me going like the little green aliens in Toy Story... WOOOOW... so i would like to know if my readings are ok or is there something wrong.

Intake manifold absolute pressure 34kpa.
Engine rpm 660.
Air flow rate from mass air flow sensor
2.88-3.04 g/s.
O2 sensor output voltage bank1-sensor 1 0.46v.
Short term fuel trim bank1- sensor 1
-1.6%
O2 sensor output voltage bank1- sensor2
0 v
Short term fuel trim bank1- sensor2
-0.8%
O2 sensor output voltage bank2- sensor1
0.82v
Short term fuel trim bank2- sensor1
-3.9%
O2 sensor output voltage bank2- sensor1
0 v
Short term fuel trim bank2- sensor2
1.6%
Time since car started 901 seconds.
There is more like timing and stuff but i didnt screenshot that.
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Old March 25th, 2020, 09:22 PM   #2 (permalink)
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O2 sensor voltage readings are worthless without seeing the actual graph of it because they constantly oscillate up and down between 0 and 1 volt (upstream at least), downstream oscillate between a smaller range like 0 to 0.5 volt because of the catalytic converters

What are your long term fuel trims btw?
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Old March 25th, 2020, 10:37 PM   #3 (permalink)
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Downstream actually should hold about 0.5v, not 0-0.5v
They even out the 0.3-0.7v pulses of the upstream. Otherwise you'd throw low voltage codes

Overall, all looks normal. But like Kyle said, the O2 data has to be an average shown, not the current voltage. It'll change multiple times per second
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Old March 27th, 2020, 10:00 PM   #4 (permalink)
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I'll give you the numbers tomorrow. I did see on the screenshot that bank2 had 7% long term fuel trim. On another note the volt on the sensors stays at 0. Could they be dead from handling them too much attempting to use normal spacers when i only had exhaust manifold cat delete? I think i twisted them too much at one point.
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Old March 27th, 2020, 10:06 PM   #5 (permalink)
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Another question. It has kind of a rough idle. I changed the spark plugs and cleaned the MAF sensor and EGR. Those rpm's acceptable for idling? It goes back and forth from 660-718rpm.
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Old March 27th, 2020, 10:29 PM   #6 (permalink)
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If a sensor was dead you’d have a code
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Old March 28th, 2020, 09:41 AM   #7 (permalink)
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Yeah, that RPM is fine.

Also, don't ever spray cleaner on your MAF again. It's self cleaning, it's just a heater element. Every time you turn the ignition to "on", it auto cleans itself. If you had cleaner on it that wasn't fully dried, then powered it, it would also start a fire.

By spraying a cleaner on it, you add a tiny amount of residue. That residue creates a hot spot when the wire heats up, and may cause it to burn out, or for the resistance value of it to be permanently altered
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