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Re: 300 zx run always too lean, why? |
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| Posted by |
turisimo66 on May 21, 2019 at 1:09 PM |
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This message has been viewed 349 times. |
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| In Reply To |
300 zx run always too lean, why? posted by maniaq on May 20, 2019 at 12:11 PM |
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| Message |
maniaq
if one of your O2 sensors is pegged at high voltage (reporting rich), the ECU will try to reduce fuel to get it to come down to oscilating between rich and lean. Hence your cars runs lean. Your description indicates the LH O2 sensor may be dead (stuck high), giving the ECU the wrong info. I believe an EGR valve problem will send the O2 signal high as well.some info here La-Z-Link something to think about anyway as cjw3 recommends i'd review the 6xP's as well Turisimo
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12:11:59 05/20/19
