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Old July 17th, 2009, 11:56 PM   #1
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Constant Cel !?!?!?!



I have been coming up with codes P0111 and P2183. IAT range/ performance problem, and ECT sensor circuit range performance problem as well. I have taken all the possible steps in fixing the issue. I have been through changing the engine wire harness, replacing all three sensors (IAT and both ECTs). Now i even replaced the factory ECM. I get a constant reading of about 30C lately as opposed to 11C what i was getting prior to replacing the ECM. Still throwing a code at random. Is there anything else that could cause this>? I am running an emanage ultimate with a boomslang harness. I have heard the factory PCM's Timer goes bad which is why i got the new ecu. It read 80C when it was installed and 4 days later it returned. Could the A/F ratio be throwing this off>? The boomslang harness have a short in the circuit>? Or the fact that the Emanage throws a warning for VTEC below a 1000RPM (although not tuned) be effecting this>? If anyone has any input at all in regards to this issue a repsonse would be greatly appreciated.
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Old July 18th, 2009, 05:58 AM   #2
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You need to add 1K resistors to the BS harness for those sensors, re-read the EMU install manual and you will see where they cover this, the EMU is throwing the readings off.
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Old July 18th, 2009, 03:27 PM   #3
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1K Resistors? i am not technically savy when it comes to wiring can you please explain?
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Old July 18th, 2009, 03:33 PM   #4
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^ put the resistor inline with the sensor
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Old July 18th, 2009, 03:46 PM   #5
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At the wire on actual sensor? or harness?

Only beacuse i just replaced the entire engine harness and do not want to splice it up if i am incorrect
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Old July 18th, 2009, 03:53 PM   #6
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----(wire)---->RESISTOR------>SENSOR
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Old July 18th, 2009, 03:56 PM   #7
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Ok because upon reading the initial reply paul stated to add the resistor to the BS harness , which is what confused me. And since i am throwing both codes i should add it to all three sensors>? both ect's and IAT? Because this problem has been ridiculous to figure out and began quite randomly.
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