Hi guys, i'll try and put this down in not too many words.
Last year had con rod bearings gone with some serious crankshaft damage. New engine installed, now done less than 5000 miles. Remap still present on the ECU. Some time before the engine went, I had a wide band Air/Fuel gauge installed, brand: PLX Devices. The accompanying sensor is of the self-calibrating type (so I've been told). Never had any weird readings up till now. Normally under 'granny' driving conditions I'd get everything between 14.7 and 15.8 [which is OK for an atmo engine], during warming up sometimes leaner [16.5] and on full throttle [last 1000 rpm before limiter] as rich as 12.2~12.4.
A few days ago the gauge started giving me readings of 17 to 18 during normal cruising sometimes leaning out to 19. :scared: :scared:
Then the other day everything was back to normal.
Today during idle again 17.5 to 18 leaning out to 19 during cruising. I get no abnormal hesitations from the engine, no weird noises.
So, could be the wide band sensor is faulty, could be a problem with the MAP sensor, could even be a vacuum problem in the manifold...
My question: suppose the sensor isn't faulty, shouldn't the Clio's Sagem 3000 pick something up and throw me a fault code on the dash, especially running this lean?
Last year had con rod bearings gone with some serious crankshaft damage. New engine installed, now done less than 5000 miles. Remap still present on the ECU. Some time before the engine went, I had a wide band Air/Fuel gauge installed, brand: PLX Devices. The accompanying sensor is of the self-calibrating type (so I've been told). Never had any weird readings up till now. Normally under 'granny' driving conditions I'd get everything between 14.7 and 15.8 [which is OK for an atmo engine], during warming up sometimes leaner [16.5] and on full throttle [last 1000 rpm before limiter] as rich as 12.2~12.4.
A few days ago the gauge started giving me readings of 17 to 18 during normal cruising sometimes leaning out to 19. :scared: :scared:
Then the other day everything was back to normal.
Today during idle again 17.5 to 18 leaning out to 19 during cruising. I get no abnormal hesitations from the engine, no weird noises.
So, could be the wide band sensor is faulty, could be a problem with the MAP sensor, could even be a vacuum problem in the manifold...
My question: suppose the sensor isn't faulty, shouldn't the Clio's Sagem 3000 pick something up and throw me a fault code on the dash, especially running this lean?
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