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Thread: 24x SES light
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12-01-2015, 10:19 PM #1
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24x SES light
I finally got HPtuners working had some issues but I scanned the car tonight and I have a bunch of codes that read MIL on second error. Codes from the TPS MAF coils injectors coolant sensors (which quit working randomly) and others. I looked all the codes up and they all say it could be a power or ground issue. Do they all have a common ground somewhere? The MAF TPS and temp sensors are all brand new and the harness is brand new from the 24x kit. Any input would be appreciated and if it's computer related try to dumb it down some I'm totally new with the software and all.
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12-02-2015, 10:26 AM #2
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Who made the harness?
Correlation does not imply causation.
Una salus victis nullam sperare salutem
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12-02-2015, 01:57 PM #3
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It's definitely harness/ ground related. Check batt connections. Make sure harness is plugged in to the pcm tight/ correctly.
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12-02-2015, 02:07 PM #4
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EFI connection
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12-06-2015, 12:47 PM #5
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The harness ground I have bolted to the front driver side head and I also have a heavy gauge wire from the front of that head to the frame. I have a heavy gauge wire going from the back of the passenger head straight to the negative battery terminal. Also have the terminal to the frame. And the the ground on the fender has 2 factory wires on it (not sure if anymore go on there) then the two small grounds on each side of the radiator support. Those should be all good grounding locations right? Is there any grounds other then these that I should check? Could the PCM itself be messed up? I'm lost on where to look here. I don't have a volt meter but I put a test light on all the grounds it's not showing power to any
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12-08-2015, 02:04 PM #6
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What codes specifically are you getting?
Second error is older codes or intermittent.
If you clear them does it still happen?
Log the car use the awesome software to watch what is happening. If what you think is happening is happening you can watch live and record it on the scanner. You will see voltages all drop to zero. If its specifically the harness faulting you will see it on the circuit thats failing.
Usually if a main ground fails the interface will show nothing for data across the board. If its just say the tps you will see its just the tps.
No guessing with the scanner, you can see what is happening.
IIRC the only ground i use on the motor is for the stater, the others sound like they are ok but i would go striaght to the chassis.
I highly doubt the pcm is bad unless you did something really stupid to it.
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