harzoune

hello i need help! can you interpret this lamda probe reading with xentry das, having engine misfires I think I have a problem with these probes thank you in advance.

Plutoe

I would suggest that you google auto lambda as I think you are heading in the wrong direction
FYI lambda reveals the amount of air that should be in the cylinder vs the amount of air in the cylinder----whats your point

harzoune

hello thank you for answering , I’m sorry but I didn’t understand the answer I use a translator and the answer is messy my English is null

nemiro

If your sensor capture was taken at idle or cruise, then the reading above would appear normal, as the ECU cycles the air/fuel mixture back and forth across the stoichiometric boundary. Your chart does not show RPM or load, so I would assume you took this capture at idle. The lambda sensor simply reads the presence (or lack of presence) of oxygen in the exhaust. It requires heat from the exhaust to operate (there is also a built in heater to help it get up to temperature more quickly). If there is no oxygen present then the sensor will produce a voltage, which to us means the mixture is rich. If there is oxygen present, indicating a lean condition, then the sensor will not produce a voltage. Typical stock type (narrowband) lambda sensors produce a voltage between 0-1v.

harzoune

bonjour nemiro merci pour cette réponse rapide et très bien détaillée, ce qui veut dire que mon souci se trouve ailleurs, je pense au M A P capteurs mais je n'ai pas de code d'erreur et j'ai lu que cela pourrait provoquer des ratés et un ralenti désactivé sans annoncer le moindre code d'erreur ? Avez-vous une idée ? Merci.

Merci à Plutoe pour son aide.

nemiro

I had a similar set of symptoms. It turned out to not be an electrical problem at all. It was the crank pulley separating. The pulley was visibly wobbling at idle. The ECU interpreted the inbalance of the engine as a misfire, and started setting codes and shutting down cylinders.

harzoune

Hello nemiro desolé for the late reply, job obliges with the translator I have the word crank I assume you are talking about the crankshaft pulley? thank you.

nd-photo.nl

Jep, hes referring to this one

Partnr: 1130300103 / A1130300103

harzoune

Thanks for the quick answer ,c is well the crankshaft pulley,j checked and it is ok I have to look elsewhere . thanks for your help👍