wideband help
anyone know how accurate the plx m300 units are i have bought a used one with a claimed 3 hours of use, installed it and i cant lean out my idle mixture, the moment it gets to about 13.1 the car dies but idles good at about 12.5 and im not sure if its a sensor fault etc. any ideas welcome? engine is a extend port 13b and sensor is mounted about 10" from the back of the turbo
|
I'd replace the sensor. If he used leaded fuel that thing could be garbage. You can get the sensor from VW for $35 or you can get them elsewhere for $80. The bosch LSU4 sensor is only $35 let me dig up the VW part number for you.
I use the plx m300 and it works very well. Make sure your settings are correct if you have a datalogit and power fc. Also, check the calibration on the wideband. Easiest way to do this is. Make sure car has not been running for at least 8 hours. Turn the key to on (the wideband will turn on) DO NOT START THE CAR, just wait 30 seconds.. the wideband should go through a warmup and then read "AIR" If it doesn't, it's not reading correctly. |
Originally Posted by C. Ludwig
The PLX uses the Bosch LSU sensor. The Innovative does also if I'm not mistaken. They are OEM application parts in some VWs, Porsches, Audis, Volvos, and, Cadillacs. Use VW part number 021-906-262-B. Cheapest place I've found is www.1stVWParts.com. ~$38 + shipping. They are a direct fit for the PLX. |
thanks i will try this now
|
ok i have done that, display starts off 14.7 then slowly reads leaner and leaner untill it displays LEAN then a few seconds after that it displays AIR. any ideas?
|
i'd find a tuning wideband and have someone verify it on a known good setup. No way ot know yours is good unless you test it with a higher quality wideband o2.
|
thanks for the help i will try and get it verified. cheers
|
Originally Posted by savana
ok i have done that, display starts off 14.7 then slowly reads leaner and leaner untill it displays LEAN then a few seconds after that it displays AIR. any ideas?
If the engine is idling while its doing that your wideband controller is smoked. |
thats the problem im having. alot of people are telling me that often streetports wont idle any leaner than 13.1 and others say they will? im not really sure who to believe or if it is faulty.
|
Originally Posted by savana
thats the problem im having. alot of people are telling me that often streetports wont idle any leaner than 13.1 and others say they will? im not really sure who to believe or if it is faulty.
Where are you trying to get it to idle at? What RPM? Mine seems to like to idle around 1100RPM and 13.3. I can do 13.9 and have it idle at 1200RPM. But getting my car to idle at 14.3-14.7... no way. It runs like crap and hates it. |
Originally Posted by savana
thats the problem im having.
If that's the case and you changed the sensor then the controller is smoked. Don't even try to tune on it. Send it in for repair or throw it in the trash because its useless as it sits. |
Originally Posted by Trevor
So it's showing "AIR" while the car is running?
If that's the case and you changed the sensor then the controller is smoked. Don't even try to tune on it. Send it in for repair or throw it in the trash because its useless as it sits. |
Originally Posted by savana
thats the problem im having. alot of people are telling me that often streetports wont idle any leaner than 13.1 and others say they will? im not really sure who to believe or if it is faulty.
|
All times are GMT -5. The time now is 11:41 AM. |
© 2024 MH Sub I, LLC dba Internet Brands