Low Boost, Lag? Diagnose the Turbo in your Car, Truck, or SUV

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Is your turbo not working correctly? If your vehicle is feeling sluggish, or is making odd noises, it could be the turbo. In this video, Andy shows you some diagnostics you can try on your own turbo.
🔧 List of tools used:
• No Tools Needed
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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[@1AAuto]

√ *Watch the Video* √ *Buy The Part at 1A Auto* 1aau.to/m/Visit-1AAuto √ *Do it Yourself* √ *Save Money*

[@XenoEXTornado]

Straight to the point. Not making a video unnecessarily long. Thank you.

[@1AAuto]

+V8_EATER Thanks for checking us out. Shop for high quality auto parts on 1AAuto.com: 1aau.to/m/Shop-1AAuto-c

[@lexycohen4882]

I agree! He explained everything clearly without all the. B.S.

[@christophercarson3143]

My car wasn't boosting correctly due to the gasket from the manifold to the turbo being blown in half. I fixed this yesterday and today took it for a hard short drive. It was boosting great. 1.5 bar and holding. But on my way back it was peaking at 1.5 and holding 1.0 bar. It shouldn't have any boost leaks either as my charge pipes are bevelled. Clamped and glued. So tomorrow its time to pull it all apart (again) 😭

[@MattsWorks]

Any update? Sounds the same as the problem I’m having now

[@MAKResto]

I didn’t used gasket because on my stock turbo there was no gasket but on stock turbo it was making 0.7 bar but now its not making more than 0.2 is that the reason?

[@timothysummers671]

the rubber coupler on the hotside of mine keeps blowing off. I'm guessing a stuck open waste-gate valve?

[@duaneroberson7447]

Thank you for sharing your knowledge

[@1AAuto]

+Duane Roberson Thanks for checking us out! 1AAuto.com

[@ابنثعلب]

what is the difference between waste gate function, and blow off valve function, are they both have the same function which is getting rid of excessive pressurized air, and if they have the same function why to use two devices that have the same function?

[@spelunkerd]

Waste gate is on the exhaust side, blow off valve is on the intake side.

[@tonymaldonado67]

Idk about my turbo when I accelerated in the night way it Spools up and down like it gains power and loose??

[@yeseniachavez4338]

Did you ever figure it out ?

[@stevenmann6686]

Really helpful stuff, thanks John Malkovich!

[@DubbTV]

1A is one of the best car channels on KZbin. I’ve been watching them for years! They also inspired me to start a youtube on Cars! Keep up the great work guys!

[@1AAuto]

That is great to hear! What is your channel name? We would love to check it out.

[@1AAuto]

+Boob Vlogs Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1AAuto.com

[@GixxerRider1991]

Putting turbos in economy cars has added a lot of unnecessary expense to owning a vehicle. Even if you change the oil religiously it will still have problems eventually, and if it's out of warranty the repair will be several thousand dollars which doesn't seem worth it just to get another ten miles per gallon. Manufacturers build these things to fail and on top of that recommend 5,000-mile oil change intervals which is a recipe for disaster considering the increased heat and blow by generated by direct injection. If you're gonna get a modern car, get one that's naturally aspirated and it will have way fewer problems in the long run.

[@1AAuto]

+Ian Zulick I can agree to that and you make some great points!

[@2fast4all]

My first engine blew at 59K miles. It had suffering from LSPI by 20K miles and pistons has pre mature cracking from the factory. New engine from GM under power train warranty. Now car is at 86K miles and just installed a aftermarket catch can (waited for warranty to run out so didn't want to get flack from dealer before hand). Oil changes were done at 4.5-5K on the dot. 5W-30 full syn. Source: '16 Chevy Malibu 1.5L turbo

[@TheFunSheet]

NA are rare:/ everything has a turbo. You know what they say “ spool now and pay later” 😀🙂😞😕🙁😩

[@UTPP]

I have a question which you might know the answer for. My Ranger turbo wasn't making boost, there was a fluttering noise coming from under the hood when accelerating. A mate said I needed a new turbo so I fitted a new one. The problem was still there. I then replaced the manifold air pressure sensor which fixed it about 80% when driving around town. As soon as I dive at a speed of 80/100kms is like there is a restrictor fitted to the accelerator. There is no power or boost when travelling at that speed. Occasionally there will be a surge and it takes off like a rocket, almost like a solenoid or wire starts working. Any suggestions?

[@UTPP]

Was a blocked catalytic converter. I cut it out and it's running like a dream.

[@adal8590]

Wow that's everything to a vehicle lol

[@DiscipleofChrist101]

"If the waste gate is closed, your car will go faster." Me: and that's exactly what I want.

[@adal8590]

Wow that is so cool how u guys took of some parts :

[@1AAuto]

Thank you, as always, Ada!

[@1AAuto]

+Ada L Thanks for checking us out! 1AAuto.com

[@alexis19081]

My mechanic told me on my TDI that the gasket of the BOV does not work would that fix be easy if it only is the gasket or would the whole turbo need to be replaced I just got a Whole new one some months before. Polo TDI 1.2 2012

[@MJ-xm1jb]

HELP!!! I have a 2011 Cooper S R56 N18, stock turbo, completely stock...my issue is, if I go into boost to fast, I get, what I think is, misfires. I let off throttle before the car goes into limp-mode, it runs normal again. Anybody have any clue what the issue is or could be?

[@normski262]

Does anyone have an idea why ( sometimes) if you kick my CRD C300 down or try and make a drag start, it goes into kangaroo mode bucking or jurcking up the road. Ideas, could it be the waist gate ,actuator or some other other reason. Anyone else had this problem, or engineers know of this issue ?

[@ChristinaStachura-jn9pl]

Quick question the Chevy Cruze diesel turbo is tight fan

[@Tonyrona]

Awesome thanks guys.

[@rbr7li]

My turbo just at 7psi with 30% acceleration... is this normal? I dont want to floor it.

[@MJ-yu7kw]

All of a sudden my turbo started working at 4000rmb . It used to activate at 2000rmb . What could be wrong here ?

[@1AAuto]

+M J We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@igorpozega2129]

I have the same problem on my bmw , did u find any solution?

[@mcgmhp7290]

First do a boost Leak test .. And then check if faulty blow of valve or waste gate not open or shut properly

[@jamescole7302]

you can rebuild for for about half price everything man makes is rebuuildable

[@mersuman6395]

Hey. I have such a problem that sometimes after faster acceleration at idle and at low revs, the boost pressure gauge shows negative pressures until I press the gas and the pressures rise again. This usually happens when the car is started when it is warm, never when the engine is cold. Where is the problem? I asked that for many people, and nobody knows what this problem is 😒

[@luperodriguez8203]

Hey...my name is Estevan. Recently I got a 2021 Buick Encore GX. She just told me her check engine went turned on. She drove to the Auto zone in San Antonio. Where they told her it was her turbo. I'm not sure what they checked,or if they checked a code? She found out it's expensive and dealer part only. We should be covered as we have a out 6 000 miles factory warranty and and extended warranty as well. She was worried about driving car home/ work...she drives and hour round trip every day. I asked her if the car was struggling or anything like that. No it's driving ok. So can someone let me know. She'll have to run it to dealership tomorrow morning or after work. Thanks for a speedy reply!!?

[@1AAuto]

+@luperodriguez8203 We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@ChristinaStachura-jn9pl]

No power from the turbo

[@texaspatriot9064]

My 2014 ram 3500 is real sluggish. Boost only goes as high as 7 lbs. 😡

[@joker8541]

What is normal turbo boost pressure? Bmw 525d 218hp

[@yasindaud6448]

How much pressure doesTurbo devlop at out let and inlet pressuretell me in bar .

[@mauricesheehy4081]

My 2010 D4D turbo does not kick in till 2500. revs

[@mkillen182307]

How much is it to replace the turbo on my 2012 F150 eco-boost? Thanks

[@adal8590]

What is that?

[@spelunkerd]

Well done!

[@CARAIRCONTECH]

Nice

[@lilce1992]

Could a faulty PCM cause the turbo booster to go out?

[@ryannewnham8826]

How much power would you lose with a bad turbo

[@philpilkington]

Great presentation thanks!

[@squigglymunchkinmechanic]

Thanks great video!

[@rossbowman202]

Quite enjoyable

[@1AAuto]

+Ross Bowman Thanks for the feedback! 1aauto.com

[@user-lh2xn5iy2p]

Well done video

[@1AAuto]

+Jean-Philippe Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@righteousman8488]

Good explanations

[@aliyuadamu3945]

Thanks for sharing

[@mridware9694]

Show comparison with new turbo

[@1AAuto]

+M Ridware Thanks for the feedback!

[@scottrobertson2461]

Knows his stuff bigtime!

[@1AAuto]

+Scott Robertson Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@mrz2158]

Thank you

[@1AAuto]

+Mr Z Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

[@keeahn480]

1a auto videos are always great

[@1AAuto]

+Kee Ahn Thanks for the feedback!

[@vitomorris]

My turbo doesn’t work anymore and I’m not sure how to diagnose it correctly. I have an atmospheric blow off valve so i know that when i hear that my turbo is working. As i was leaving my house i accelerated very quickly and fast and i heard a big pop as if something came loose or popped out, and now i don’t hear the BOV, i also get a really bad whistling noise when i rev past 5,000 RPM, Im not sure what it could be but maybe one of the hoses came out ? Any advice would be greatly appreciated!

[@jerryzuniga3291]

Yoo same thing happened to, mine just started doing the whistling 2 days ago