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Paul M ASE Master
Paul M ASE Master, ASE Master Tech
Category: Car
Satisfied Customers: 4684
Experience:  Ase Master 20+ Years Experience Foreign and Domestic
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Help,p0171 code lean bank 1..intake gasket..rings

Resolved Question:

help,p0171 code lean bank 1 after intake replaced,did he mess up intake gasket or o-rings??
Submitted: 7 years ago.
Category: Car
Expert:  Paul M ASE Master replied 7 years ago.

Hello and thank you for using Just Answer

 

upper intake manifold leak can set this code

 

if you use a can of carb/throttle body cleaner you can spray around the intake while it is idling if the idle raises up you have found a vacuum leak

 

make sure there are no vacuum leaks around the engine and all hoses are connected

 

if you have a leak the idle will raise when you spray the cleaner on it.

 

have you asked the mechanic to double check for vacuum leaks?

 

let me know if you need more help

 

thanks

 

Paul M.

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