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2006 chevy trailblazer

#1 User is offline   racer65 Icon

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Posted 24 January 2015 - 07:42 PM

Hi am trying to help out an buddy. On his wife's 2006 chevy trailblazer with 5.3 engine ck engine light on code p0171 bank 1 lean.

My question is does any ever found an crack in the plastic intake manifold.

An shop install an front o2sensor but it didn't fix the problem

Any help will be appreciative

Thanks
Brian
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#2 User is offline   mod11 Icon

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Posted 26 January 2015 - 12:41 PM

View Postracer65, on 24 January 2015 - 07:42 PM, said:

Hi am trying to help out an buddy. On his wife's 2006 chevy trailblazer with 5.3 engine ck engine light on code p0171 bank 1 lean.

My question is does any ever found an crack in the plastic intake manifold.

An shop install an front o2sensor but it didn't fix the problem

Any help will be appreciative

Thanks
Brian

No misfire codes with your 171?Possible intake gasket failure but it sometimes has multiable misfires with it.Who pulled the code?I,ve seen kmart code readers throw people off also.Have it diagnosed,several times a year I will be asked to install 02 sensor for evap codes from advance or other free code readers.
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#3 User is offline   racer65 Icon

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Posted 26 January 2015 - 02:16 PM

View Postmod11, on 27 January 2015 - 03:41 AM, said:

No misfire codes with your 171?Possible intake gasket failure but it sometimes has multiable misfires with it.Who pulled the code?I,ve seen kmart code readers throw people off also.Have it diagnosed,several times a year I will be asked to install 02 sensor for evap codes from advance or other free code readers.


i used and cronwell scaner (otc)... they put bank 1 o2 sensor in .. after they drive the vehicle for 2 or 3 months the code p0171 sets the engine light on...

thats the only code ..

am just looking for so more info where to ...

i dont have an fight recorder to loan them...

thanks
for your help
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#4 User is offline   mod11 Icon

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Posted 26 January 2015 - 04:30 PM

View Postracer65, on 26 January 2015 - 02:16 PM, said:

i used and cronwell scaner (otc)... they put bank 1 o2 sensor in .. after they drive the vehicle for 2 or 3 months the code p0171 sets the engine light on...

thats the only code ..

am just looking for so more info where to ...

i dont have an fight recorder to loan them...

thanks
for your help

drive it to get to temp and try some carb clean at intake gaskets,known common failure
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