m300 / ecu / stock o2 sensor problems
07-15-2005, 05:35 AM
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m300 / ecu / stock o2 sensor problems
I’m not sure if I posted this in the right section but here it goes.
b16a
obd1/p72
plx m300 wideband o2
OK, the cel #1 comes on which is indicating a bad o2. I have turned off the o2 heating element through uberdata. Out of the plx m300 WB I ran the gray (0-1volt) feed to pin d14 on the ecu. Reset everything and its still not reading the o2.
Through the WB display everything reads fine so I know its working.
I have measured the voltage coming off the gray wire and it is correct. Any suggestions?
thanks!
b16a
obd1/p72
plx m300 wideband o2
OK, the cel #1 comes on which is indicating a bad o2. I have turned off the o2 heating element through uberdata. Out of the plx m300 WB I ran the gray (0-1volt) feed to pin d14 on the ecu. Reset everything and its still not reading the o2.
Through the WB display everything reads fine so I know its working.
I have measured the voltage coming off the gray wire and it is correct. Any suggestions?
thanks!
07-15-2005, 05:40 AM
#2
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Re: m300 / ecu / stock o2 sensor problems (swtch7)
This is from the PLXsupport people. Anyone have anything else?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swtch7 »</TD></TR><TR><TD CLASS="quote"> PLXSupport_SS
Joined: 09 Feb 2005
Posts: 113
Location: California
Posted: Thu Jul 14, 2005 8:37 am Post subject: PLX App 0004
--------------------------------------------------------------------------------
Swtch7,
Have you checked out our applicaiton note about the stock narrowband replacement? http://plxdevices.com/PLXApp004.htm
Do you have the noise filtering capacitor and load resistor properly installed?
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swtch7
Joined: 14 Jul 2005
Posts: 2
Posted: Thu Jul 14, 2005 3:28 pm Post subject: Re: PLX App 0004
--------------------------------------------------------------------------------
PLXSupport_SS wrote:
Swtch7,
Have you checked out our applicaiton note about the stock narrowband replacement? http://plxdevices.com/PLXApp004.htm
Do you have the noise filtering capacitor and load resistor properly installed?
"8. Install the 20 Ohm, 10 Watt load resistor to prevent the engine check error code. This allows your ECU to "think" that your stock narrowband sensor is still being heated. This resistor can be obtained from your local radio shack or electronics store. If 20 Ohms is not available, two 10 Ohm, 10 Watt resistors connected in series (not parallel) will also work. "
This stops the o2 heater ecu cel from comming on. Thats not the cel im getting. Im getting an o2 signal cel. The o2 heater cel is turned off through uberdata.
I do have the noise filtering capacitor installed though.
thanks for your reply!
</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swtch7 »</TD></TR><TR><TD CLASS="quote"> PLXSupport_SS
Joined: 09 Feb 2005
Posts: 113
Location: California
Posted: Thu Jul 14, 2005 8:37 am Post subject: PLX App 0004
--------------------------------------------------------------------------------
Swtch7,
Have you checked out our applicaiton note about the stock narrowband replacement? http://plxdevices.com/PLXApp004.htm
Do you have the noise filtering capacitor and load resistor properly installed?
_________________
PLX Devices Technician
SS
http://www.plxdevices.com
Back to top
swtch7
Joined: 14 Jul 2005
Posts: 2
Posted: Thu Jul 14, 2005 3:28 pm Post subject: Re: PLX App 0004
--------------------------------------------------------------------------------
PLXSupport_SS wrote:
Swtch7,
Have you checked out our applicaiton note about the stock narrowband replacement? http://plxdevices.com/PLXApp004.htm
Do you have the noise filtering capacitor and load resistor properly installed?
"8. Install the 20 Ohm, 10 Watt load resistor to prevent the engine check error code. This allows your ECU to "think" that your stock narrowband sensor is still being heated. This resistor can be obtained from your local radio shack or electronics store. If 20 Ohms is not available, two 10 Ohm, 10 Watt resistors connected in series (not parallel) will also work. "
This stops the o2 heater ecu cel from comming on. Thats not the cel im getting. Im getting an o2 signal cel. The o2 heater cel is turned off through uberdata.
I do have the noise filtering capacitor installed though.
thanks for your reply!
</TD></TR></TABLE>
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