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Discussion Starter · #1 ·
my cam is cosworth mx1.After installtion.Thrown out the p0133 error code(lean out?) in some miles cruising and idle .I can see the wideband guage sometime 16~17.
any ideas?
Thanks
 

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Did you look up the code?

P0133 - Oxygen Sensor Circuit Slow Response (Front sensor)

Maybe your front O2 sensor is going bad, maybe the wiring was cut...something to that extent....that's where I would start at least.
 

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Discussion Starter · #3 · (Edited)
yes sir,i have checked the O2 sensor,it is good.i logged it by evoscan.The STFT was ok.but it was unstable sometime.it could jump max ±11% then back to ±1%,but the LTFT curise and idle is ±5%,it seems ok.I can saw the wideband guage sometime 16~17 and 12~13,not often,it was more time in 14.5~14.7.i think it is the tuning issue.
 

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Discussion Starter · #4 ·
anybody can help?:godance:
 
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