1999 Z71 P0300 P0102 P0157

[Chris]

You arent cooling the brake lines enough

[chris001979]

Wow thanks for making fun of a serious situation and i have done the spray trick and no luck

[Chris]

Sorry I was bored in class. Lighten up a little. I'm in the same boat as you with the P0300.

 

Do you have a buddy with a 99-02 V8 truck or SUV? Doesn't matter if its Chevy or GMC. If so swap in their MAF and see if it eliminates the P0102.

 

For the P0157 I would just replace the O2 sensor.

 

And the P0300.... when were the plugs and wires last replaced? This can be caused by the MAF, a catalytic converter, coil pack, injector, or a combo.

 

My mom's G6 had a catalytic converter fail and it caused 5 codes to pop. A MAF code, a catalytic converter code, secondary air injection code, P0300, a body code. Changing the catalytic converter resolved all those codes

 

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[chris001979]

Sorry just so frustrating i am 100% sure number.8 injector is failed i did the listen to the injectors trick and number is very quit sound like it has failed i know the mass airflow sensor is bad and i have a bad 02 sensor im pretty sure if i fix these 3 things it will fix it

[Chris]

Do them one at a time and clear codes after each to see what codes come back. Let us know the results

 

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[chris001979]

Update i pulled the fuel rail of the passenger side and omg the number 8 injector was completely clogged up so i took all 4 out cleaned them up and bingo she is running slot better tomorrow I do the driver side

[Chris]

How did you clean them? I am going to clean my MAF, TB, and now maybe the injectors.

 

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[gmtech4]

you can blow air across the top of the injector and vacumn will suck the debris off the top ,or a wet vac ,,,,,

 

there is a screen at the top

[chris001979]

I just used throttle body cleaner

[Chris]

I may look into this monday