p0133

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07-17-2009, 11:45 PM

woopt

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p0133

Got code p0133 had other codes pointing to upstream o2 sensor. replaced sensor several time still get low reading at o2 sensor. Slight rough idle in gear when stopped. Run smooth in park and neutral.

Any suggestions

Tom 99 Blazer 4.3 2wd 4d

Last edited by woopt; 07-19-2009 at 04:35 PM. Reason: not getting a correct response fo my guestion

07-18-2009, 02:42 PM

wolfen

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thats for the obd 2 systems right? Cause all I do in mine is jumper A and B, flip the ing switch to run and count the light flashes, then compare them to the book,

07-19-2009, 04:37 PM

woopt

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not sure you understand my guestion

got code p0133 had other codes pointing to upstream o2 sensor. replaced sensor several time still get low reading at o2 sensor. Slight rough idle in gear when stopped. Run smooth in park and neutral.

Any suggestions

Tom 99 Blazer 4.3 2wd 4d

Last edited by rriddle3; 07-19-2009 at 05:45 PM. Reason: Cleaning Up Double Posts

07-19-2009, 05:56 PM

rriddle3

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Location: Fort Worth,Texas

Posts: 6,595

I have combined your posts on this issue. Please do not double post since it is against Forum rules.

07-19-2009, 06:43 PM

cc4usa

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Location: Helper,Utah

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code p0133 refers to the 02 sensor circuit responding slow on bank 1 sensor 1
1st 02 sensor is responding slow check wiring to sensor for low voltage.