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datamaster help
- Thread starter ppress79
- Start date
Eric Sy GN
Donating Member
Re: datamaster help
Need to make sure the chip was made to match your wideband. If you can give me the info on the chip, I can look it up.
Need to make sure the chip was made to match your wideband. If you can give me the info on the chip, I can look it up.
Eric Sy GN
Donating Member
Re: datamaster help
I need to double check the chip to see if it was programmed for a PLX. Can you give me the chip# or order#?
Also, make sure the PLX is grounded to the ECM.
I need to double check the chip to see if it was programmed for a PLX. Can you give me the chip# or order#?
Also, make sure the PLX is grounded to the ECM.
Eric Sy GN
Donating Member
Re: datamaster help
I checked the chip program and it was made for the PLX, so it seems you have something else going on. Either a wiring problem, or a problem with the analog output on the PLX.
Make sure you have the analog output (not the narrowband output) of the PLX connected to F14 at the ECM.
If that's good, then I would check the voltage of the analog output of the PLX, with it powered up and the O2 sensor unplugged. It should be around 2.3-2.4 volts .
I checked the chip program and it was made for the PLX, so it seems you have something else going on. Either a wiring problem, or a problem with the analog output on the PLX.
Make sure you have the analog output (not the narrowband output) of the PLX connected to F14 at the ECM.
If that's good, then I would check the voltage of the analog output of the PLX, with it powered up and the O2 sensor unplugged. It should be around 2.3-2.4 volts .
Eric Sy GN
Donating Member
Re: datamaster help
Glad it was something simple!
Eric
Glad it was something simple!
Eric
Re: datamaster help
Hey Eric,
I have it idling good. It starts right up and I was able to adjust to fuel at idle and closed loop is good. The only thing I see is a drop in timing on throttle crack. It idles at 20 degrees but drops to 13-14 at throttle crack then climbs like it should and respond great except for that initial hesitation from the timing drop. Any idea what I need to do to correct this?
Thanks,
Phil
Hey Eric,
I have it idling good. It starts right up and I was able to adjust to fuel at idle and closed loop is good. The only thing I see is a drop in timing on throttle crack. It idles at 20 degrees but drops to 13-14 at throttle crack then climbs like it should and respond great except for that initial hesitation from the timing drop. Any idea what I need to do to correct this?
Thanks,
Phil
Eric Sy GN
Donating Member
Re: datamaster help
The timing sounds normal. If it's hesitating, its probably more of a fuel thing. Have you driven the truck? It should be driven around so the fuel trims will "learn". We need to see if there is a big difference between the idle trim and the off idle trim (BLM cells).
The timing sounds normal. If it's hesitating, its probably more of a fuel thing. Have you driven the truck? It should be driven around so the fuel trims will "learn". We need to see if there is a big difference between the idle trim and the off idle trim (BLM cells).