2010 Chevrolet Camaro P0171 and rough engine 

Update: While testing for the vacuum leak while trying to raise the rpm. I should have brought this up. on vehicles with MAF system, if there was a vacuum leak. at idle, the idle would normally be low because the MAF is not picking up unmetered air. But on a MAP vehicle a vacuum leak would cause the idle to be higher due to the MAP sensor picking up the unmetered air and thinking the vehicle is at a higher load. Hope this helps on your next diag. **Want to own the tools I use ?? Click on the amazon link below to get my top 5 Tools I use** Automotive Test Light- amzn.to/3z1Pdxa Flexible Backprobe- amzn.to/3Pyr3zO Multimeter- amzn.to/3PbuT23 OBD Scan Tool- amzn.to/3zaNWnq Wire Piercing Probe- amzn.to/3JpMtNY

Awesome video, interpreting MAP sensor data is one of my weaknesses and this video greatly improved my knowledge and understanding of it. Will definitely save this video for future reference, good job man.

Thank you for explaining how to get the correct MAP reading.

Thank you for the MAP tutorial. So it doesn't measure vacuum so much as absolute pressure. Now it makes sense. Much appreciated, sir!

Good one Oz! Haven't seen a bad map in years! My first was an 83 Oldsmobile Cutlass V8 Computer Controlled CARBURATOR! As Lucky Costa would say, "Fun Times."

Just at the beginning of this video and you said something that will cause you a lot of grief in the future. When taking a car, NEVER trust any previous work or diagnostics. Just look at it fresh and you will have much better luck and less stress. 3/4 way through video now, before replacing the sensor, you should have unplugged it and watched the pids. This confirms you have the right sensor and it confirms wiring.

Chasing parts is the norm when you unaware of cause and effect. Using a scan tool properly is the key to success.

Thank you for the explanations of the MAF and MAP Sensors! Great stuff!

Thank you I’m learning a lot from your videos

Thanks for sharing your knowledge Oz, you don't assume we all know everything. But watching you, we have a chance!

Thank you OZ for the lesson and teaching God bless you 🙏

That was a very clear and concise tutorial on MAF and MAP sensors. I appreciate that.

You are the man, Oz. Thanks for the lesson, brother.

Very good explanation, I've been doing this a very long time and its surprising to see that so many techs (young and old) don't know this.

I loved it Oz! Thank you for the white board help!!!

Man I appreciate you sharing all this knowledge

Another job well done! Thank you for explaining to us how the map sensor works.

Great value repair video thanks

Well done and thank you.

Great demonstration man! Enjoyed it

Excellent diagnosis

Men the best video I ever watched! Wow now I’ll try to fix this I have the same problem thanks !!! 😅

Very well explained, super handy to know the basics and avoid the parts cannon!

This is a pretty well explained video, thanks men.

Thanks for sharing 👍

Great Job 🤘🏼🇺🇸

Thank you very much Oz

Super nice exploration information,blessing

Nice diag & explanation!

NICE VIDEO , GREAT DIAG

GOOD ONE ,,, THANKS FOR YOUR TIME !!!!!!!!

Great fix . It's good to understand what the data from the scan tool is telling you . Keep them coming ! I call that color 🍌 banana yellow .

very interesting thanks

14:33 LOL! "bloppers"! you mean "bloopers". Anyway, that was an excellent vid. I didn't know about the barometer measurements, so thanks for enlightening me about that!!! Rock on, OZ!!!

Darn good job bud,......real good explanation tooo

Great explanation 👌 thanks 😊

I love this guy

Eres un crack, muchas gracias por compartir tus conocimientos, 🙏

great video

Right on the money Man. Just like SD premium

To find the barometric pressure i use the weather channel for my location on that day, and the MAF is so hard to calculate while running (KOEO) due to engine temp and humidity, good fix!

Nice

thanks

Dam good job oz

No parts cannon needed. Always a pinpoint repair. “There ya go”!

Thank you for the video. I have a 2012 SS l99 camaro. Eratic idle until I turn off traction control and stability. Then idle runs smoothly. Hopefully your solution can fix my issue as well.

Great diagnosis Oz! Thank you for your videos, they are very helpful. Do you think unplugging the MAP would force the car into substituted values for a quick test?

thanks that makes sense now in new zealand its average baro is 1008 to 1020mbar

Nice info OZ! Watch out for PIDs that only show live data while receiving a crank signal...

My 2002 model Holden VY SS Commodore is fitted with the 5.7 litre Chevrolet LS1 V8 engine & either a P0171 or P0172 code was caused either by an.air leak or low fuel pressure. If it was associated with an air leak then a P0102 code for the mass airflow sensor was also set !

Car mechanics are not Computer Scientists so math is not super important. For those of us who have bad memories like IVAN over at PHAD, we need to keep a notebook handy to help us prevent silly math errors. Thank you for the lesson on MAF and MAP readings. May I also suggest that you create some short videos for lessons as a stand alone video, then if you ever need to slip it into a diag video like this, then you can follow Bernies lead on how he does his training and slip the clip into a diag video. This way your training bit is better prepared and more accurate and more professionally presented rather than ADHOC, cheers.

KNOWLEDGEABLE

Really good video! I have a question though. My 11 Camaro V6 has a similar problem but no 170 code. I checked my BARO and it stays at 28.1 with engine on or off. Could it be the MAP sensor or something else causing that?

Thanks for all the great videos, and love the bloopers, I think it camera causes interference with the communication between the brain and the mouth and what comes out is all garbled

❤❤❤❤❤❤❤

Hey Oz! My Camaro SS is misfiring on cylinder 5 with a coil pack E circuit open code and a misfire on cylinder 5 code. I replaced the coil pack and wire but it’s still doing it! Oddly enough it only does it when the coolant temp is 160+ degrees. What is going on with my car this is crazy!

Hola primo. Buen video como siempre. Una pregunta nunca se encendió el coquito de servicio? Check engine

Digo por lo del sensor map

Where you located I need to bring my car to you

They never body about the airbag.😂😂😂

Bloppers? 😂 during bloopers perfect.

Sounds like another case of engineered failure GM doesn't want you to fix it they want you to buy a new one