Question about 1997 Buick LeSabre

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1997 Buick Lesabre 3800 engine. Mass Air Flow. Cleaned honey comb screen in air body by MAF but after 150 miles with air on, code 102 turns on check engine light.

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Good Evening. You did the right thing cleaning the honeycomb, you should try cleaning the elements on it. It is a very good first step to try that, however if it is kicking on a check engine light feel lucky because the MAF sensor can do things that will also not kick on a check engine light. my words of having been there before would be to replace the sensor. Hope this helps, and if you have any more questions please feel free to ask.

Posted on Aug 19, 2010


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How to resolve a mass air flow sensor code : ALL vehicles.

How to resolve a DTC , p0171, or p0174 code. This code usually does not appear on your vehicles dash, but rather a "check engine" light will display.
If you have an OBD II reader,( some auto parts centers will allow you to borrow theirs) plug it into your vehicle (usually under the passenger side dash) and pull the code.
This code usually means that your MAF ( mass air flow sensor) is reading the air/fuel mixture and senses a problem or may be dirty.
There are a couple of things you will need to solve this problem.
- You will need a can of mass air flow sensor cleaner, and a screwdriver.
Step one : Depending on which vehicle you have you must locate the MAF.
It is usually inline on the air cleaner intake or air "box".
Step two : Unplug the connector from the MAF, and loosen the hose clamp holding it tight.
Step three : Pull the MAF out and be VERY careful DO NOT drop it !
Step four : Make sure you are in a well ventilated area, and place the MAF gently onto a clean rag or absorbent towel, spray the inside of the MAF that looks like a honey comb, and make sure you DO NOT touch the small sensor wire !
Step five : DO NOT dry off the MAF it will dry quickly, re-assemble and test out your vehicle, we usually hear people tell us they notice a difference right away in the performance of their vehicle.

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