Causes of lean condition trouble codes P0171, P0174 - GM 5 3L

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The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1 and 2) a P0101 (MAF circuit out of range) and a P0300 (engine misfire detected). All of these were related to one single problem.
Engine Performance Diagnostics chapter 1 pages 4-12
Symptoms
- rough idle, especially cold
- check engine light (P0171, P0174, P0101, P0300)
- poor gas mileage
- hesitation on acceleration
- runs much better with engine warm
Fix
- replace intake manifold gasket
Tests shown
- how to use freeze frame data to determine type of lean condition
- how to interpret fuel trim data
- how to locate a vacuum leak with water
- how to smoke test and intake manifold
- how to know what trouble codes to fix first
Tools used
- scan tool
- smoke machine
- water bottle
Playlist
- (Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing
• (Chapters 4 and 5) Fue...
Related videos
- Understanding Short Term and Long Term Fuel Trim (an SD Premium video) • Understanding Short Te...
- How to find a vacuum leak with water
• How to find a vacuum l...
- Misfire caused by a vacuum leak
• Misfire caused by a va...
- Ford F-150 P0171 P0174 Trouble Codes - vacuum leak (water test) • Ford F-150 P0171 P0174...
- Idle Speed Problems P0507 caused by a vacuum leak
• P0507 Idle Speed Perfo...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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8 июл 2024

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Комментарии : 762

@roadkill5333 6 лет назад

I love coming back and re-watching these videos, even after watching other vids, to see if I absorbed any of the info, and can process it in a real world scenario!! Plus, they are just entertaining to say the least!! I can't do much in the way of auto exchanges any longer, I was really into being "PARTS CHANGER", in my youth!! I did my own parts changing for my own vehicle, and some family and friends, but never knew how much I DIDNT KNOW, until MR. PAUL DANNER, and his real world hands on diagnostics approach!! Let me just say that I'm not a paid spokesman for the ScannerDanner teach-a-tech series, but....... I'm not against drawing in some royalties!!! :-D :-D :-D let me tell you where to send the check!!

@ScannerDanner 6 лет назад

thanks so much my friend

@ScannerDanner 6 лет назад

check is in the mail :-)

@roadkill5333 6 лет назад

ScannerDanner!, headed to the mailbox, right now, to await its arrival!!! :-)

@KTHKUHNKK 5 лет назад

roadkill5333 Tomorrow I will go to work on my PO174 code on my 2000 GMC Sierra 4.8

@rdvemo 5 лет назад

@jimbuford4147 8 лет назад

Great video. I always like your willingness to go the extra mile to be 100% on diagnosis and help your viewers get the most out of your videos.

@paulmullins5425 5 лет назад

Awesome video and I used to think these problems were so hard to troubleshoot but not anymore. Man you're a great teacher. Love how you break the problem down and make it simpler. Keep up the good work

@michaelagalasso2389 8 лет назад

Paul, Another great case study. I have two of these trucks. One with a 5.3 L and one with a 6.0 L this video will go into the archives. I always learn something new from you. Thanks

@mrexecutive1 8 лет назад

Thanks for walking us through your thinking process.

@YouTube.TOM.A 4 года назад

I can never figure out how I can watch this video two years ago and look at it again today when I am much more informed, and still find a bunch of new information that I can learn from the tutorial. Thank you sir.

@homeehsan7007 4 года назад

Amazing piece of detailed information about fuel trims and lean condition. He has the quality of teaching those concepts to anyone. There are very few people who have knowledge and can convey to other people So SIMPLY IT IS BEST

@AutoTechEngineeringDHAKarachi 3 года назад

this video was posted back in 2016, and still helping me. Great work

@davesministry7789 8 лет назад

Another excellent diagnosis job. So much better than grunt work part changing. I was surprised how much smoke leaked out with this small leak. Thank you..

@northernpatriot9078 4 года назад

rewatch : thank you!! the correlation between the fuel trims and the suspect intake leak was awesome and finding it with water once you showed that to the customer the job is sold

@wyattoneable 8 лет назад

Good call on the fix and excellent visual with the smoke machine. Thank you for taking the time to show us that. This must be common because my 5.7 had such a bad leak water got into the engine.

@freddysoto6584 8 лет назад

Great diagnostics as always. Thanks for sharing your knowledge with everyone..

@LynxStarAuto 8 лет назад

The water into the carb is a real thing. I witnessed my dad do it many a times when I was growing up. Clears the carbon right out. Especially useful on later emission dressed carb engines which would gunk up the intake manifold, and valves.

@richardr5013 5 лет назад

Much more than a mechanic, this guy is an engineer and has very in depth knowledge of internal combustion engines. When you can't figure out stuff, he's the man. Great job Paul, Thank You for your help

@92camaro100 6 лет назад

Thank you,may GOD bless you, because you just gave me and alot of people vital information on where to begin and check gaskets with water,i never new that,i always seen people check with carburetor cleaner.

@W.Khairi 5 лет назад

ScannerDanner at the top of the game as usual, Thank you very much.

@clintgray8976 6 лет назад

Outstanding! Very thorough and explanatory in your troubleshooting methodology. 👍

@jessevp2348 4 года назад

Thank you for making these videos like how you explain everything and show on screen the scanner.

@mikeoneill7360 7 лет назад

I'm 52 years old and find this to be fascinating....You did a really nice explaining everything in this informative video, thanks.....

@ScannerDanner 7 лет назад

Thanks so much Mike!

@davidcarney7555 3 года назад

@@ScannerDanner p

@glennefaw8118 4 года назад

Paul this was a very informative video. Thank you for the instruction and thorough explanations. That water test was a trick I didn't know. Great procedures for this scenario.

@mikevonkleist6767 6 лет назад

How long have been doing this? I've been at this for 37 years. You're one of the few people that knows what's up and why. You think like I do.You're a good tech, dude. Thank you from all of us.

@ScannerDanner 6 лет назад

About 25 years and I've been teaching at a technical college for 17. Thanks so much!

@mikeoneill7360 Год назад

I’m watching this video again 6 years later from the last time, awesome….

@terf7020 4 года назад

wow, this is a great, informative video. Earns a ranking of Super Duper on the terf scale. Thanks for taking the time to post it.

@Juise187 2 года назад

Subbed at the moment you demonstrated the water test. That was just genius. Your thorough knowledge and process is top notch. I will continue to watch what you have.

@ScannerDanner 2 года назад

Thank you and welcome!

@JMATUS24 5 лет назад

Reminds me of my instructors in school. Your the man!

@alexandergonzalez2232 7 лет назад

Doctor scanner Danner! the word doctor means educator and one who studies complex in-balances in 5 different systems and makes a primary and secondary diagnosis. I keep repeating your videos in the hopes I catch one third of your 150%. God Bless and thanks for empowering the John does of the world.

@ephjay6t87 2 года назад

That water trick showed me the same problem with GF's 2003 5.3. white smoke appeared in the exhaust! Thank you so much.

@geekdiymechanic4539 8 лет назад

Great video. I like when you think out loud. It allows me to follow your train of thought. Thanks for doing the video.

@ScannerDanner 8 лет назад

+GeekDIY Mechanic thank you

@joginderdeol1109 4 года назад

Best teacher best guy best technician. Way off explanation is easy to understand hats off thanks

@baxrok2. 8 лет назад

Well done Paul. Thanks for explaining and then demonstrating this so clearly. These lean codes are most certainly something to become well versed in as they seem to be very common.

@eddiemartinez265 8 лет назад

Hey paul jim posted a new video glad to see him back love this one great job.

@erickrgarcia 5 лет назад

Very good video! Thanks for the tips on checking for possible air leak trouble shooting.

@wysetech2000 8 лет назад

Another outstanding diagnostic video, Paul.

@reneserrano8147 4 года назад

You are amazing, thank you for all the information, I have a Chevy pick up with a misfire code, this video explains a lot. Thank you again.

@PRSQUAD88 5 лет назад

Very nice job I like seeing videos like this showing people the little tricks and stuff showing people how to do it yourself you don't need expensive tools to do it

@Sandbag1300 8 лет назад

Outstanding diagnostic video. As good as you ebook! Really enjoyed watching the Snap-On smoke machine work. Mostly because it was a Snap-On.

@dainbramage8608 Год назад

Thank you for making this video . I really appreciate you taking the time to do so . I am so impressed with your knowledge. I have a lean code and honestly it’s kind of fun trying to figure out what’s wrong . Thanks to the wonderful people like you that put videos on RU-vid. I can be a jack of all trades , master of none lol .

@ScannerDanner Год назад

Glad it was helpful!

@stevenmullins9430 6 лет назад

Hands down the best automotive teacher I've come across, and I've seen several. Please keep up the good work

@ScannerDanner 6 лет назад

Thank you so much! Happy New Year

@ahmedhamoda2995 8 лет назад

just thank you very much indeed scanner danner,, because of you i got my life back to me,, i started a new career and with your helpful videos am taking it forward step by step to successful man, you know only if i were living in the united states i wont miss your classes for the world, A REAL BIG APPRECIATION

@ScannerDanner 8 лет назад

+Ahmed Hamoda that is awesome to hear the impact of this channel on your life. I am blessed to know this. Thank you!

@SaqibKhaliq 8 лет назад

I learnt something today. Thanks Paul, keep up the good work 😀

@DG-america 4 года назад

Although I dont understand what you are reading on the screen during diagnostics, you did explain well enough for me to understand what you were getting at. I'm here bc of a 171, 174 code that occurred during load. At least the light was thrown after being parked at idle for an hour in the middle of a trip. Thank you very much for giving me a direction to go in.

@ScannerDanner 4 года назад

Yes sir. Toward the MAF or fuel pressure would be my top two for under load lean conditions

@carylamari6546 5 лет назад

Thanks, I was leaning toward a vacuum leak on my 06 Silverado 5.3 had a PO 171 code and your video confirmed it, I had a 17% Long term fuel trim and a 0-3 % short term fuel trim. when I raised the RPM to 2500 the short term and long term FT went down a little and when it warmed up it also got a little better down to 15% so I guessed I had a small intake leak as it got better as it warmed up and I noticed better trim when cold as I raised the RPM. I smoked the engine from the intake and after the motor got good and smoked I saw smoke coming from under the intake so that confirmed the leak. I will be installing a new Fel Pro intake gasket and while I am there new knock sensors. From the video's I have seen I need to clean the valley and build a silicon U shaped dam in front of the Knock Sensors. Thanks for the Video Good stuff!

@MorbidXTC 3 года назад

Ran across this video after getting these codes on my 04 suburban with 5.3. water bottle trick definitely helped test the intake manifold gasket and my engine got rougher and steam did come out the exhaust. On cold starts I had noticed a rough kind of idle until warmed up for a little bit but no codes.. no clue... Warmed up and no problem til the codes today leaving work. Thank you for the simple test trick!

@ScannerDanner 3 года назад

Glad it helped! Thanks for the comment

@thelazyhandyman8581 2 года назад

Thanks man. This is definitely something that will point me to the right direction. Very well explained.

@Magnacharger07 5 лет назад

I like the water bottle test it's a good one. My silverado had the intake leak but would run great cold once warmed up would surge and hesitate. Intake gaskets cured it.

@nzkgb1486 8 лет назад

Nice one Paul. Liked the format good to see a person when they are taking to you. I fixed an early 2000 cvic that would run on & ping because of carbon with that water trick no problem just dropped the exhaust at the manifold.

@Herbotune 6 лет назад

Thanks so much for this excellent information which you present very well. I have a similar car with similar symptoms and codes. Very, very helpful.

@juanar6233 5 лет назад

Love using the water test for vacuum leaks.

@DeignsByPrincess 6 лет назад

Man, I’m happy I watched your video. Thank you

@Bowhunter-ft8cn 4 года назад

Thank you for the details in this video. I have been searching ways to diagnose this and never understood the fuel trims and how to use them to help diagnose the issue. Never heard of the water bottle test neither and by golly it did exactly what the vehicle in the video did as soon as the water hit the intake manifold gasket area. I previously tried this with brake cleaner with engine cold as a friend suggested and got nothing. The water gave results immediately. Thanks again for the details given and the tips on how to use the data on the scanner to help diagnose. It really helped me to get a better understanding and I now need to replace my intake manifold gasket. Wouldn't have figured it out without your help.

@ScannerDanner 4 года назад

Best comment of the day! Thank you so much and nice job following along. That is credit to you. Not everyone is willing to understand this stuff

@codyfryer1003 4 месяца назад

One of the most detailed videos ive come across on the LS engine. Thank you sir

@ScannerDanner 4 месяца назад

Glad you enjoyed it!

@stevenbellll 3 месяца назад

THANK YOU SO MUCH! In your videos, you have taught me so much. You're not just posting guess videos. You're slick. You just fixed my Tahoe! Again, thank you so much.

@ScannerDanner 3 месяца назад

Happy to help! Thank you!

@frugalprepper 6 лет назад

I love the water trick. With no smoke machine I have been watching fuel trims while putting some propane or brake cleand down around the intake and seeing if they correct. It always a little nerve wracking to introduce a cloud of explosive fuel around a running engine though. Water seems like it may be a safer way!

@alanv3379 8 лет назад

awesome video mr danner like always thank you and GODBLESS you family

@SteveRobReviews 8 лет назад

Paul my 02 chev 6 liter never had a code and only concern was a stumble on cold start. Once in closed loop trims were fine. I was chasing IAC until I smoked the intake and both banks were pouring out smoke at cold. Engine never exhibited any drivability until the temperature went below freezing. I like the water bottle idea a use it . Nice vid 👍👍

@ozzstars_cars 8 лет назад

Good information on intake leaks. Thanks for posting

@stephenbates8370 8 лет назад

another exelent presentation. thanx for going through the prosses of elimination that makes all the difference for me :)

@dadsgonenuts Год назад

I appreciate your videos SD very informative I just want to say I had all of the same codes along with others so I started replacing everything fuel injectors spark plugs coil packs mass air flow sensor and was tempted to put a new intake manifold & gasket on it but first I started doing some research on what individual components do & control in which led me to check the fuel filter & after struggling to blow through it I realized that it was indeed clogged not all the way but enough to give the codes P0300 P0171 P0174 P1131 P0443 P1400 so I change the fuel filter and thankfully all the codes went away & because I wanted to be convinced that that was my problem the whole time I started taking off the new equipment and putting the old equipment back on and to this day no codes.. Thanks again for your videos and help. 🇱🇷🇱🇷🇱🇷

@sergiozarzoza6926 3 года назад

Te felicito por tu diagnostico, eso es el código del p0171 p0174 en Chevy

@tam5176 5 лет назад

I've got the exact same codes P0171, P0174 & P0300 broken stud from when I replaced the knock sensors, so will go with the water test in the morning.

@adanarceo4636 5 лет назад

Thanks for sharing your knowledge my brother and for your time and dedication to make this videos, 👍👍👍

@nathanzupancic6528 8 лет назад

Thanks for the video! Trying to diagnose the 0171, 0174, and an 0101 code on my truck for emissions testing. When the engine is hot at idle I am getting near zero trim numbers and between 10-19% when hot at highway speeds. Like your truck, my code set at 143* or so. This makes me far more confident that I can fix this issue!

@ScannerDannerPremium 8 лет назад

+Nathan Zupancic cool man, sounds like your issue too

@jptrustno1 4 года назад

This guy is good, really really good. He teaches students, and he knows how to use the snapon scanners probly better than anyone else that i know and i been doing this for 20+ years and i STILL cant do half the stuff my modis edge offers.

@charleswittmer2477 4 года назад

this is what IBM would call a specialists in a certain area. not a normal mechanic. now, if his hands are correctly connected to his brain? some instructors can barely hold a tool.

@joemikos9155 8 лет назад

Man, you love your job. Another great vid Scanner! Thanks

@hallz9117 2 года назад

tightened mine up, runs great now !!!!!!!!! THANKS BROTHER !!!

@chrisday4885 2 года назад

Great info, tons of knowledge and knowhow ! And I really loved the birds in the back ground 🐦 Thanks...

@1Babyjesus1 4 года назад

Woooowww, great video, I just got thee PO171 code on my 2001 Chevy Tahoe, 5.3 liter 2x4 With 251,000 miles. I believe it’s thee original intake manifold gaskets... perfect timing. Because my knock sensors need to be replaced to. I have both codes also for those. Thanks a lot for thee info. Going to do the water test ASAP. 😎👍

@vincescalise4821 4 года назад

That was a brilliant Proof of concept

@chrisbain7773 6 лет назад

I do thank you as I have been to 3 garage's with no help as I have a code P219B as everyone says it is sponsor 2 bank 1 but the light will not come on till I am on the road for 2 hour s . As I do thank you for the water test as that helped me out a lot , I have a 2010 Chevy truck Great Video .

@jenniferflor2264 6 лет назад

Thanks ScannerDanner! We tried the water squirting trick on our 2004 Suburban and nearly killed the engine. I think we found our problem ;)

@0514april Год назад

I think I like you personally. The knowledge is great too.

@lucianlucian9911 7 лет назад

A cool video, as usual! Ha ha, that part when you poured water on the intake manifold and the tail pipe started to make smoke circles was pretty funny.

@rexluongo6470 2 года назад

My grandfather used to pour tranny fluid in the carb or throttle body. Said it cleaned up the system like seafoam, before we knew about seafoam. Used to smoke like crazy. Don't know if it worked but if he did it, it probably worked. He was a rocket scientist, literally.

@Thefox2000unit 6 лет назад

As per usual, excellent vid. Love it! Keep them coming, please. Fox. N/ W Scotland

@shaffer4220 3 года назад

This guy is good. My dad used to remove carbon from the pistons/cylinders by slowly dripping water from a turkey baster into the carburetors. Also, if the ole Holley carb got sone dirt he revved the engine and then quickly covered the top of the carb with his hand to clear the obstruction.

@Dad19676 4 месяца назад

i have the same problem with my chevy tahoe. You gave me hope for tomorrow. explained very well. can't wait to try the water test.. thank you

@ScannerDanner 4 месяца назад

Let me know what you find!

@bekomcar554 2 года назад

Paul, as always deep thanks to your insights, Seoul Korea.

@DaveSender66 7 лет назад

thank you Paul I appreciate you sharing this information with us! very much appreciate your willingness to share your god-given talents with the rest of the world I commend you my friend ! Your book is awesome! !!!!!

@russelldibiase605 6 лет назад

DaveSender66 I

@LadyBugFoxyRoxy 8 лет назад

Awesome video ...Great job explaining the diagnostics process.

@ScannerDanner 8 лет назад

+Tony Marks thanks Tony!

@robqcmccullum8797 8 месяцев назад

Yes when I started as a Tech working for Cadillac and Olds on HT4100 V8 we would use top engine cleaner and pore water down the throttle body to clean carbon and also soak the top with some of that solution for awhile and start it up later,nice work

@damianward2578 8 лет назад

Nice diagnosis Paul, this is the first time I have seen the smoke tester in use, very impressive. The smoke testers also may be used to locate tricky exhaust leaks in the engine compartment I understand.

@giovanyrivas9600 2 года назад

Ur genus thanks to share ur knowledge i hope u millions of happy clients

@neocatharry2693 7 лет назад

Love the water test also. My car stalls at low speeds and when I brake but when engine is hot. I don't have a fancy scanner so I can't determine what exactly is going on but I suspect my problem to be a vacuum leak and not caused by intake manifold. Will open hood and perform visual inspection to see if there's any hoses that are torn or disconnected. Will also test fuel pressure at fuel rail to check pressure.

@dannychuqui4797 8 лет назад

Good videos as always..... thanks for explaining us.....keep up !! and is good thing when is explained with examples to better understand ing and finding different ways and much easier to work in cars......good job!!

@stella362436100 8 лет назад

got a 2002 cheve 53 changed the intake orings runs great now

@neocatharry2693 7 лет назад

Right on brother and great explanation.

@RR-yp8xo Год назад

Good shot ! I'm feelinlg that. Keep up the good simple diagnosis .👍🏾

@nicholaselias8542 8 лет назад

my bro-in law's 2008 trailblazer was throwing a p0171 code with similar data. i also suspected vacuum leak and did a smoke test and found smoke billowing from the intake. it turned out some of the bolts had backed out and I tightened them and then the numbers went back to normal. they were so loose i was surprised they didnt fall out

@nfotabongconrad3564 5 лет назад

Oh man... You're so dedicated to teach us Scanner Danner. Taking some extra of your time just so we can see on our own what is actually going on. We can't thank you enough... I mean... you're such a great person before being an awesome instructor.

@JohnnyMacTahoe 6 лет назад

Had the exact same codes on my 2000 Silverado 327. (5.3) Cleaned the mass airflow sensor... no more bogging or missing - runs like new - no more codes - no more trouble light.

@devonjefferson982 6 лет назад

Johnny Mac I hope that's my problem!

@JohnnyMacTahoe 6 лет назад

Yea, hope so. It's certainly worth trying first because it's cheap and easy. They make a spray cleaner specifically for the MAS, use that. Best of luck.

@codymcfadden8856 6 лет назад

327?

@JohnnyMacTahoe 6 лет назад

327 cubic inch. That's American for 5.3 liter

@kklg911904 6 лет назад

Its 323 cubic inches not 327

@homeehsan7007 4 года назад

Paul is master in his field

@acturus1697 5 лет назад

You rock.. I'm getting your book and moving up from there. Thank You.

@ScannerDanner 5 лет назад

Thank you!

@calimesacox 10 месяцев назад

32 years Heavy line for the first 12... Went to Aftermarket independent shop and started doing Diagnostics and I am in a love hate relationship with vehicles.

@jhager8459 6 лет назад

You are the average joe American hero. Love it.

@esifuentes85 4 года назад

Good video, lots of detail. Thank you

@KTHKUHNKK 5 лет назад

Excellent video my friend tomorrow is another day and I will get on it. Thanks Keith Kuhn

@joelthomas3823 3 года назад

Awesome, same codes and symptoms cold, did the water test, engine started running rough , intake leak of drivers side rear, thank you very much for the video!

@ScannerDanner 3 года назад

Such an easy and SAFE test. Not sure why some dog it

@zeej5003 6 месяцев назад

Danner! I just diagnosed a 2013 Chevy Express that P0174 and P0172 lean codes for both banks. (it ended up being a bad MAF). Fuel trims were normal at idle, but on acceleration the long term fuel trims would go lean at over +20%. I could also hear the engine knocking on acceleration with the doghouse removed. The engine also lacked power and the trans shifted poorly. You NAILED it at the end of the video with your comment about lean on acceleration is likely MAF or fuel pump. I spent hours today doing diagnosis. I finally tried a known good MAF and fuel trims went normal, power was back, no more knocking, and trans shifted properly. I learned to use a Snapon scan tool and scope from your videos 10 years ago. THANK YOU.

@ScannerDanner 6 месяцев назад

That's awesome, way to stick with it and nice find. Thank you!

@alansanchez-cp5lx 2 месяца назад

What brand maf sensor did you get? I got local autozone but told to go to oreillys but don’t know of a particular brand if you could point in brand direction would help! I am having these issues but to the contrary my engine runs great when cold but when warm weather or engine warms up then i get the knocking or rattling on acceleration and sluggish acceleration and poor shifting… i already replaced fuel pump for different symptoms last year and maf sensor to tackle this p0171 but thinking of buying again this time from oreillys… any help would be appreciated

@zeej5003 2 месяца назад

@@alansanchez-cp5lx OEM (A/C Delco)