2006 Hummer H3 Chugging at Idle - FIX IT Mass Air Flow Sensor and Throttle Body

I created this video to help other owners figure out why their Truck, Hummer H3 or other vehicle may be Idling rough at start or coming to a stop light or stop sign. I replaced everything that the Codes told me to replace, including Air flow sensors, Intake and Exhaust, and the Solenoid Actuator. Nothing worked, then... I Used my brain. Clean your Air intake sensor and throttle bottle. INSTANT power and no chugging at all, NONE whatsoever.

[@squadcustomsgarage3305]

I would like to add that when you do this procedure you clean the Pressure control valve (PCV) this is why you had oil in the resonator and on the throttle body. Mine was clogged and I needed to use a small screw drive to poke through the sludge that had built up and used the MAF cleaner on it also and the hose. If the hose is cracked it must be replaced with a new hose! Once I did this and the other items my H3 ran beautifully like new and I have since used engine / sludge cleaner and changed the oil also. I love my H3 again instead of hating it because of the issues. Thanks for posting 🤘

[@73SDR]

Positive Crankcase Ventilation (PCV).

[@theSEAacademy]

THANK YOU!!! I have a 2006 Hummer H3 that was doing exactly what you said - idling rough at start and at stop lights, even to the point of conking out! Watched your video and my Son and I tackled this job thanks to you! And WOWOWOW what a difference it immediately made!!! Thank you so much for your wisdom and willingness to share this video! Great video, Great fix and a Great day for Dad and Son getting their hands dirty! God Bless You!!!

[@michaelgamble9650]

So glad you had a great time with your son, I hope when my son is old enough he loves it as much as I do. Haha. Take care! God Bless you too.

[@TOAJET]

Thank you!! This was the fix to the surging at low idle! I smiled when I went to Walmart and found the exact Throttle Body/Mass Airflow CRC combo Kit for 8 bucks. Great Job and thanks for putting this video together. Very Appreciated! Stll helping people after 5 Years of posting.....

[@michaelgamble9650]

You are most welcome! GlAd you're still rocking the Hummer!!!

[@MarceloPGG]

I did it, my hummer was failing when starts, when I remove the resonator, I found the little hose was broken. So, after cleaning everything and replacing that hose, now it works very well. Thanks!

[@MBvideos553]

Thanks. I followed your instructions for cleaning my daughters hummer. Again thanks and keep posting videos!! It helps allot of folks

[@tkosandiego1518]

thanks for the video, I have a 2007 with 140k miles...You just saved me time and money!! Runs great!

[@brianenergi3367]

Good job! I'm the gentleman with the watermark video! After 2 yrs of my Hummer running great, the rough idle is back, so i will be doing this again.

[@michaelgamble9650]

thanks for posting your original video Brian, appreciate that initially! helped me out for sure.

[@muhamadfirdaus361]

Thanks Brian and Michael, I watched your video guys. I had same problem on my 2007 H3 and now running smooth and even more power I felt. No more rough idle. Cheers from QATAR

[@WalidAmoudi]

I would like to thank you for your detailed steps which helped me a lot, i am from Saudi Arabia and my 07 H3 is now perfect idling after i cleaned body throttle. Thanks

[@michaelgamble9650]

That's awesome! Glad I could help you.

[@MrUrrl]

Thanks Michael, I had a problem with the throttle body wires so I left them both attached and put a small tupperware tray underneath to catch the cleaning fluid. She runs great now! You sure saved me some money!

[@michaelgamble9650]

MrUrrl awesome glad you're running stronger now!

[@Sheldor_AFK]

omg this is whats happening to me atm. took the family out with the caravan and it was so stressfull !im going to do this in the morning. hopefully helps. great video thanks

[@mrlocks]

Thanks a lot!!! Mine kept idling up and down when I break, between x500 to x1000 RPMs. It would constantly shutdown too when that would happen. I only paid $10.52, you saved me 100s of dollars!!!

[@michaelgamble9650]

That is awesome so glad you saved yourself some money.

[@andrewarmitage168]

Thanks for the video! The hose at the rear of the upper intake is the PCV hose.

[@ProjectGRX]

thanks, this really works. Hummer would stall when stopping at lights or stop sign. I tried replacing the camshaft sensors & pcm and it still stalled. did this and it like new

[@FirstLast-mx6qb]

Hello, thanks for making this video. I have a 2007 Hummer H3 and it's been idling bad only when I come to a stop at low rpm's. As a result it would shut off at times. After checking online for remedies that might resolve the issues I did the following recommended things. First I checked my oil to see if it was low. It needed a quart. It mentioned if the problem still exists there my be a airflow issue. First thing it mentioned was check the air filter. Mine needed changed. Once I did that it did run just slightly better but the idling issues when coming to stop would still cause the engine to shut off at times. Even my lights was dimming off and on while stopping. It wasn't my battery or alternator cause they was new. Plus my coils and spark plugs was newly replaced. So I knew that wasn't the problem. So my next step is cleaning the sensor and throttle body. I've had the stuff all off before to change my spark plugs and coils. Very easy to get off. So getting to the throttle body again to clean it isn't a problem with removing stuff. I haven't done it yet but I'm kinda excited cause I'm sure I would have the same results you had with it running so much better. Like you said, everything plays a roll in making it run better. I'm planning to do this shortly. Thanks for the video! I'm confident that this will resolve my idling issue when coming to a stop. Just by changing the air filter made it run slightly better so it's definitely a sign that the engine wasn't getting enough air at low rpm's cause the throttle body was sticking on the build up of sticky oil. I've seen and read other Hummer owners who had the same issue said the cleaning made a big difference. It most cases they mentioned it ran like new again! Till it needs cleaned again!

[@YXEFlatl1ne]

ANY UPDATE?

[@b.i.gbuiltbullyzi35bullyz21]

Just bought an 06 hummer h3, seller didnt disclose when you go home an lt it sit it chugs an idles rough as hell, seen it had an electronic throttle body, an new exactly what was going on. It was so dirty! Cleaned an boom problem gone

[@RachelRLewis-ho3wq]

Yoooo! My college auto instructor mr. Martin Gamble is an auto genius. He was the head honcho at my school and ultimately was the only reason I ran circles around my aircraft school classmates in our electrical phase. Any relation by chance? I saw the name and all the thumbs up and was like maybe it’s just a Gamble thing. Maybe y’all just all somehow speak proper Any & All Vehicles language from yalls home planet 😎😅🤷🏼‍♀️ PS this video saved my 07 H3 (@ approx 103k miles) out of all the money I’ve thrown into it and all the time I spent on hummer forums reading thru just to save my baby. I am truly ecstatic that I have been wrong for just long enough to find myself on this vid & to now know that this is relatively normal over time. Also stoked that it was only a $8 Walmart cleaner fix, this video, and a smidge of elbow grease! Lol thanks for doing this vid!!!

[@michaelgamble9650]

No, haha no relation, but my Dad was a mechanic and an Auto Tech teacher for 20+ years. Sounds like you had a smart teacher though and glad you were running circles around the others, that's freaking awesome. Happy to help any other do-it-yourselfers!

[@RachelRLewis-ho3wq]

@@michaelgamble9650 Haha confirmed its just a gamble thing then i guess!! At 9:55 with the O-ring and whatever that casing is called, did you end up having to take that apart and clean it as well???

[@michaelgamble9650]

Haha that's funny lol, no I did not actually take that o-ring / gasket off and replace it or clean it I just wiped what you can see. I'm sure it is definitely recommended to replace the gasket but I've got 245,000 mi on my Hummer so the condition that that gasket was in didn't seem like it need to be replaced and it's still running after that video till today amazing with over 245,000 mi on this baby.

[@moarcos9362]

Awesome video, thank you so much for sharing..😎

[@artstrick]

Excellent Video!

[@andrewyoungkim1104]

I have exact same problem and one time the engine shut off when backing in a parking lot. Will try this and will let ya know how it goes in my case. Very informative and helpful. Thnak you. Thumbs up!

[@michaelgamble9650]

+Andrew Young Kim Hope that solves your issues. I also posted another video with replacing some other sensors and such, that previously didn't help this matter, but in the end run, I am sure they were all tied together, especially Engine Codes that were being spit out. Here is that video if you need it! kzbin.info/www/bejne/e5_QeImggK2KsLc

[@andrewyoungkim1104]

+Michael Gamble Great! Will do. Thanks again!

[@gabrielalmonte4497]

Andrew Young Kim did it helped

[@neromaniac]

Really appreciate your video. Thank you. Do you have more on H3 fixes etc. mine has a mean shake sometimes.

[@capitaldd5840]

Great video. Very informative. Thanks. I've done this before but needed a refresher....and a little motivation. I need to do it this afternoon and it's -10 plus wind......so I don't look forward to it. But the truck is barely drivable it chugs so bad. I'm thinking my throttle position sensor might be bad also.. I'll see after cleaning the body.....🛠 Thanks again

[@michaelgamble9650]

Good luck, Stay Warm! haha

[@jbagglesworth]

Michael, Thank you SO much for this video. I had the same problem but couldn’t afford a mechanic to fix it or even look at it. My engine was dying at stoplights which made getting to work everyday so stressful. My 07 H3 with 144k miles runs so smooth now!! I sincerely appreciate this helpful video. This made my day.

[@michaelgamble9650]

John Brittain awesome, glad it helped you!!

[@ddiemont]

Thanks. This appears to have resolved a similar issue with my 2007 H3!

[@SmllSlvrbck88]

i got a traction control fail cleaning, wondering if thats a issue

[@matthewkoenig6636]

Think my starter is going out. Any videos on that. 2007 H3

[@victorpadilla4929]

Thanks it fix my problem

[@michaelgamble9650]

GREAt! Glad it could help you out.

[@TheUtubewatcher2010]

@Michael Gamble, my mechanic has said I have to replace the air mass sensor- can I just CLEAN it? instead of replacing it?

[@michaelgamble9650]

You can try to clean this, I would do that first, before spending money on parts or labor.

[@jasnapon]

You were right there you should of changed the plugs

[@onvlader]

Got the P0068 code, I'll change the map/maf sensor to see if it fixes mine

[@mikeglassey7642]

Thanks

[@tonyagonegirl195]

My 06 Hummer H3 has a very bad idle when I push the gas and go it's all fine drives great when I come to a stop it's really bad up and down the gauge up and down.. I have changed the crankshaft sensor both camshaft sensors all new plugs I took the throttle body apart and cleaned it and the sensor I've changed my spark plugs I put new coil packs still no change it's the same so my question is where do I go from here..please help

[@michaelgamble9650]

Do you have any codes at all? If not, I did recently have a bad coil and plug, but that seems that you have already replaced those things. Other POSSIBLE and I'm guessing here... Fuel filter, fuel pump (hope not that thing was a pain in my ass to change) I can't really think of anything else unless you have codes, which it sounds you've done your due diligence at this point. I hope you find out the issue.

[@tonyagonegirl195]

@@michaelgamble9650 thank you! i guess i will try that next ..i really hope it has nothing to do with the computer..i did have codes but i have chaged everything for the codes..i just also change the mass air flow sensor no change ..thank you gor the help

[@thingstodowithguru323]

Is there any idle relearn procedure required after cleaning TB?

[@MrCrf450rider]

Usually not

[@murf6612]

I have a code P0014. Camshaft position B timing over-advanced. Would this help at all?

[@z06badboy18]

Murf Davis same thing i had Now its fixed.. Did u fixed yours?

[@michaelgamble9650]

I would try it, I had the same issues before I tried this with my Solenoid that I replaced for that Error. I then did this trick and I think it was the major fix!

[@ccjcadventures2661]

I am going to try this I am getting p0300 misfire and p0305 misfire codes. have rough idle as well. swapped 1 and 5 plugs & coil should have thought to do this when it was already apart. 06 77k H3

[@ProjectGRX]

It worked for me I did it 2 days ago and now it runs great

[@YXEFlatl1ne]

Any update what was it?

[@solidsoto1]

Y luego arrancó con problemas porque desprogramaste el cuerpo de aceleracion

[@stevecagle1835]

My has a Lot of oil in it.. What does that mean??

[@michaelgamble9650]

Could be a few things my friend, however maybe read this guy's article here. www.yourmechanic.com/question/is-it-bad-when-oil-gets-into-the-throttle-body-by-heather-g I'd atleast take your entire air I take out, like in my video and get a new filter, clean your MAS and throttle body really good. You should instantly feel more power and maybe even run a little smoother.

[@garypersons9320]

A clogged air filter will cause the same problem.

[@troyredford149]

I also have an idle issue but it kinda comes and goes and varies in roughness and I tried this but it didn't help in my case. the only thing I can think it could be is either the head or my exhaust manifold. what else could cause this rough idle?

[@michaelgamble9650]

Have you checked your Actuator Solenoid? kzbin.info/www/bejne/e5_QeImggK2KsLc