Hi,
I have a lot of issues with the Wideband lambda module for my 3s-gte and G4X PNP. It fails 50% of the time when starting the car, as soon as a successful heat cycle has been completed the sensor will run for the rest of the race.
The problem is getting really annoying as I do not dare stopping the engine during lineup as I am not able to start/stop the car when leaving the pit.
Symptoms are:
The Lambda is heated for appx 3 seconds rising the temperature to 650-700degrees, then it generates error 33 Open circult.
State changes to diagnostic mode and Error changes to 16 Heated Too long
The sensor will start heating again and then the problem will repeat itself with intervals from 3 to 10 seconds.
In some cases the sensor will hear correctly and enter operating mode it seems the the initial heat get the sensor a bit higher in temperature then the attempts when it fails (700 degrees vs 660)
I see a strange pattern where the sensor temperature is not rising or even falling during the first 5 seconds of the Heating phase after that point temperature will start to rise , but it it seems that the time when it is acually heating is too short to get it sufficiently heated in many cases.
Setup and performed tests:
- LSU is placed appx 1 meter from turbo and 1 meter from exhaust outlet as the car has a very short Exhaust (MR2)
- The LSU has been replaced by another bosh 4.9 sensor, the old sensor has been tested in a another car running Haltech Elite ECU and CAN lambda where it has been running without any issues.
- I have tested with a direct power supply from the battery and a separate supply it did not help.
- Added a 22uf capacitor as suggested in some of the older threads without any improvement.
- No can or ECU errors
- Power is above 14 volts at all times (measured with multimeter and ECU logging.
- Iridium spark plugs resistor type
-Race Technology Dash 2 and Race technology data logger connected communicating with the ECU using their CAN adapter I have tried removing all other components and terminating the CAN bus without any change.
LambdaError.llgx boost update.pclx