Chevy Cruze P0171 - Rough Idle - Stalling - Possible Fixes For Diyer's 

Does your Cruze door make an annoying noise when opening , this is my low cost fix . ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nU-RbOPq3Lc.html

A ten minute fix and an 18 minute video. (ha ha) Paul's the best! Great to see you get back to working on a vehicle again.

Thanks for the video. It confirmed my diagnosis and gave me the confidence to repair it myself. Now the car runs as it should.

I have a 2013 Chevrolet Cruze LS 1.8 and did exactly this on your video. Thanks! It really worked.

I bought a 2013 Cruze for a $1000, so far, in order, I've done the rear shocks, the valve cover(pcv failure #1), the turbo and exhaust manifold, oil return line, oil feed line, coolant feed line, thermostat, coolant outlet housing(cracked during turbo replacement :(), valve cover(pcv failure #2), coil pack, and pcv fix v3.4. About $1100 in parts, no labor cost to me except the skin off my knuckles thanks to awesome gents like yourself. Thank you very much.

So much better at explaining things then most other videos very easily understand

Good call!!! Isn't great when a repair works? That feeling, beating the machine! Love it

Hi Steve, it's always a nice feeling when you fix it youself, nice tips. Cheers !

Good morning Steve, great teaching mechanical point Sir and very well detail and Yes these scan tools are very well made ( each time that you go at the garage they will charge you min of 50$ of using their one 😤 ) Thank you for this very good gentleman ( Paul ) and have a great week end Sir Cheers 😉👍🍻

I bought a scan tool 10 years ago it has saved me money.

Thanks for your explanation and your patience

How's she goin'? I can remember when small engines used to stump me. Well by reading, trying and watching RU-vid I feel pretty confident now that I can fix small engines. I think it's the same for car engines. There is a lot of technology, detectors and other things on engines these days that make them complex, but if you watch and read and get an understanding of what you're looking at, repairing your own vehicle can be done and done safely. Thanks for sharing this video Steve!! Take care!!!

Thank you so much. Best video I've found on this topic.

If your intake system has a significant vacuum leak that's allowing air to enter at a point DOWNSTREAM from the MAF sensor and UPSTREAM from the Throttle body, this will allow air to enter the intake system that the Computer is unable to measure (because it's after the MAF sensor). The computer will measure excessive Oxygen in the 1st O2 sensor, and respond by increasing the Long Term Fuel Trim in order to correct the Air : Fuel mixture or Stoichiometry error (Lean Condition). Check to see if your Long Term Fuel Trim has been increased to +10% to +20%. The computer will do this in response to the unmeasured air getting into the system through that vacuum leak. The computer will also issue the "Operating Too Lean" P0171 code. If you think about it, this is the exact condition that the P0171 code was designed for but hardly anyone mentions it. Bear in mind that in a Turbocharger system, this includes the whole intake side of the Turbocharger so it's not going to be simple to find.

Great video Steve - good work also on sorting out the actual issue. Scan tools are very handy in pinpointing the problem and in my case, I usually go to RU-vid for a fix lol - this video will help others so good on ya’ - cheers

He's helped me out before. Nice fix Steve, I bet this video gets a gazillion views

Very helpful video and easy way to explain.. thank you

Hey Steve, Thanks for putting this up. 6:00 helped me determine my wife's 2015 buick encore valve was stuck open because it was sucking in air causing the too lean code.. Appreciate you taking the time to explain and upload this video.

Thank you for your advise. I will be visiting Paul’s channel.

Nice job on the repair Steve. Some people run themselves ragged chasing this issue. Cheers

Thank You. This video will come in handy. I'm getting ready to install a new MAF sensor on my 2015 Trax and hope and pray that fixes the problem.

Thank you for your help. Keep it up

Thanks for your help that will help me out big time even took notes thumbs up

Steve always coming up with widgets, PAPA would just throw a brick on that gas pedal. Nice job on both fixes Steve, good info video! I have a scan tool, comes in handy.

Thanks brother i like your style cheap and get the job done and talk in a way i can understand i subscribed wish you luck brother

Thanks really enjoy having someone explain shit in layman’s term

Thank you for tips

True Gold.... also, check anything you changed on the vehicle recently. Understanding the cars needs. will diagnose problems. Thanks

Thanks Steve, I'm having similar problems with my 08 4runner..,0171,0174,0137 codes. I replaced the 02 sensor and the MAF but still getting the codes and rough idle and bad gas mileage. I'm going to check the throttle body that you are the first to mention,I hope that is the problem. You are right about all the advice on you tube..,very confusing.

Just seeing this now Steve! Thanks for the mention my friend.

It is amazing how much of repair is simply cleaning.

Steve your just to cool ! I think you can almost fix anything! How to fix it the cheaper simple way and doing it right! (Same in medical care you have to fix 8 little problems maybe to fix or work on the bigger problem)

I subbed because your content is thorough. im working on a 2015 chevy sonic. suppose the cruze and sonic are the same vehicle. either way as you said the concepts should be the same for all fuel injected internal combustion engines. well done!

great video steve,i have a 2018 cruze 1.4 code po172.mass flo air senser cleaned.code doesnt always come on.i suspect a dirty fuel injector,so put some injector cleaner in there,so far so good.i will see what happens and if it comes back try cleaning throttle body.car only has 35,600 miles.

Have a obd FIXD reader, you just solved the stutter at idle. Thank you.

I'm workin on my Bugatti, Lamborghini, Ferrari and McLaren...thx for saving me 5 bucks on cleaning spray.

Nice pointers.

cheers mate

Thank you going to Paul

Nice job Steve! My GF has a 2016 Malibu similar engine She was getting these codes also so I went in and cleaned the throttle body real good and it was fine for 3 months and here it won’t autostart with the check engine light on so scan it and the same code so I clean it and all was good for about 3 months again Go back in and clean it and it was due for an oil change so I went with pennzoil because I heard this was one of the better oils to use and low and behold it hasn’t come back on ! Car only has 50,000 miles I was starting to think the car had blowby or something… I do believe there is a recall with some of these for the valve cover or something? Anyways good info bro!!

Save tons of money in doing something on our own and feel a whole lot better.

Hello, I've got P0171 and P1101 faults on my 1.4 turbo. I checked the non-return valve in the intake manifold, the oil separator membrane and the non-return valve in the turbo hose which was bad. I changed it with an used one, but it passes little air from the turbo side ( you can barely blow the air from that side in to the hose). My question is: should I bother to buy a new hose for 50eur? Could the system even feel such a small amount of air coming from the hose and turn on the check engine light?

I've almost rear ended like 10 cars not expecting my car to keep going even when I brake, like a car outta hell but hopefully this and replacing 02 sensor finally fixes it( new maf sensor, cleaning throttle, new air filter and spark plugs didnt work)

Appreciate the tips thanks 🤙

What on Earth is a "Snow Brush"? Maybe to hold the gas pedal down one can use a folded-up sun screen that you always have in your car to keep the interior cool so you don't burn your hands on the steering wheel when you get in the car. 🤔

Can an aftermarket cold air intake cause a lean code due to the new air flow?

My car also has the p0171 code 1.4 turbo. Also oil coming out if Intercooler tube.

Hey man I have a 2014 and when I turn on the ac it starts idling bad the rpm gauge drops below 1 and it keeps going up and down sometimes even without it on and when it’s on high it dies any ideas?

What could be the cause of a P0171 on a 2016 Jeep Patriot Latitude 2.0 we just replaced the MAP sensor but the vehicle still has a rough idle and the rpms run high while driving on the freeway approximately 65-70 mph the rpms are jumping up to 2200-2700 rpms. What could cause that? My husband already checked for vacuum leaks and says he can't find any obvious leaks. We just replaced the map sensor thinking that would fix it but it didn't so I'm thinking it could possibly be a bad Throttle Body w/Actuator IAC Idle Air Control or a TPS Position Sensor or even possibly a upstream 02 sensor. If anyone else can give me some advice on what I should fix next I would greatly appreciate it thank you!

You said no need of scan tool but actually you got the code P0171, it think it was important at first place.

I'm frustrated. I replaced the O2 sensor, spark plugs, ignition coil, fuel injectors , valve cover, and I still have the same problem, rough idling. I cleaned the throttle body and it went away but came back three minutes later. Do I need a new throttle body ? 2014 chevy cruz turbo. The code finder showed about 4 codes

a lot of people have a scan tool but don't understand the data and purely rely on the code is the part to replace

Some know how helps, and now we know. :) That would have cost big $$$$ at a dealer, they would have replaced all new.

I got a sonic and have a diagnosis of a vacuum leak at the actuator under manifold. Any idea what part that is?

Dam I didnt know the cruze 1.8l throttle bottle is electricity operated. I figured since I dumped a whole can of seafoam 20oz and it went to limp mode I cleaned the throttle body and maf sensor and disconnected battery to remove it from limp mode It drives better than before and no check engine light or any stored codes. Is there something I should check? Sensors or sum sort?? Since throttle body is electricity operated I feel like something is messed up lol Help bro

wait what side is not suppose to suck air the tube or the purge valve itself.

can a upstream oxygen sensor cause the car to stall? Im having this issue but i already cleaned the throttle body. And changed the mad sensor. Changed the vacuum hose that goes from turbo to intake manifold.

What’s the name of that line that’s by the throttle body ?

Great job bud. So did you get Xmas cookies for payment lol. But your right, lot of the time it can be fixed without fancy tools. Cheers

In the 'old days, with a lean condition, you would have to adjust the carburetor. Does the "lean condition" you dealt with the same as the lean condition we used to deal with? Also, the throttle body opening kind of looks like the mouth of a carburetor. If that is the case, can you also spray carburetor cleaner in there?

What was the cause of error P2096?

What if a code does not pop up and you get a few seconds of rough idle?

Ive done both of these things that your video shows and the issue hasnt gone away. My friend amhzs the same problem with his 2016 chevy cruze 1.4T limited LT. Ive tested the PCV valve, the purge valve both are good. Hes had the valve cover replaced, the MAF sensor replaced, both O2 sensors replaced, MAP sensor replaced, the plastic hose that runs on top to the turbo replaced, intake manifold replaced... i found this PCV fix kit online which is my last hope and also plan on replacing his timing chain being that the car is over 125k miles and its never been done before. He has a primary code P0171 as well as a few other secondary codes. If this PCV fix kit does not resolve his problem, do you have anymore suggestions?

Sprayed it with what

Spark plugs

All u need is silicon

this must be a 1.8 engine because oil cap is not the same place then my 1.4

Just wanted to verify...depressing the gas pedal without having the engine running doesn't make the fuel pump run, does it? Just don't want to do more harm than good to my vehicle if I do this (2014 Cruze LT 1.4T).

sei americano?

Very helpful video and easy way to explain.. thank you