How to Clean a Throttle Body (2007 Chevy Trailblazer)
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- เผยแพร่เมื่อ 9 ก.ค. 2024
- Recently I had some service done on my truck, a 2007 Chevy Trailblazer. It has the 4.2L inline 6 cyl engine. After the service I noticed the idle was really rough. After some investigation it was determined that the throttle body needed to be cleaned. This is an easy process to do.
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IT WORKED!!!! Not only did it fix the throttling issue, but fixed my A/C issue as well!!! Thanks A Million!!!
Man, That's awesome. I'm so glad you got it.
what was your ac issue??
My 2004 LTTrail Blazer is running like new one after follow your instructions. I noticed a big improvment. Thanks a lot from Dominican Republic.
Sweet. I'm so glad it helped you out.
This was the first video out of several that explains that plug well enough to take it lose. Thanks!
Sweet. I'm glad it helped.
Vids like this are worth a million. I had all the problems and the symptoms. I cleaned both the throttle body and the MAF sensor and it runs like new.
That is so easy dont get exited
I want to thank you so much for sharing this video. I'm a 45 yo single woman and I just completed this, following your instructions. This video helped me fix the stalling and voltage issue I was having. You guys are heaven sent!!!
Awesome. Thanks for letting me know. I'm happy to be able to help.
Im inquiring why she was having voltage issues and hiw this relates with the throttle body cleaning ? I also have the misfire coil 1 issue . And alternator and voltage all over the place ..i cleaned the battery ground connections , battery firewall. Fuse box . And both fenders with three grounds on the drivers side and one passenger side . Check contintinuity on cyclnder head next to coils and nothing ..check the ground strap passenger side has contintinuity . Hmm . Hook batteru back up and fired it up and .now only seeing 12.79 while runninvat the battery. Im going to clean all the positive connections now .. i also cleaned the two grounds on the rear drivers side frame rail next to the tire carrier .. i think im also going to change plugs out , while i clean the throttle body .. im super duper inquiring about the voltage issue ?
How by cleaning the throttle body fix the voltage problem.
dude, you have no idea how happy i was that this worked for me. Here were the things i was dealing with...
Car would studder and shake when coming to a stop and sometimes turn off while idle. The AC will switch off and sound like it was engaging and disengaging. Followed this video step by step and it fixed my issue.
THANK YOU! i owe you a cold 6pk!!!!
Man, thats awesome! I'm so happy you got it fixed.
You made this sooooooo easy. My 2006 trailblazer is idling like it is brand new! I have been struggling with his rough idle for years and now it is fixed! Thank you!
Thats awesome. I'm so glad you got it fixed up.
Did you have to do a relearn procedure in have a 2006 ext 4.2
My 2007 blazer was idling rough and stalling during deceleration or while stoped in traffic. Followed instructions in this video and now it runs beautifully! Problem solved, thanks!
Sweet! I'm happy you got yours running good again.
Thanks for the video. Was able to pull the throttle body and clean it up following your instructions. Greatly appreciated.
Awesome!
Good video. Thanks Jeff!
This video helped and showed me a lot thank you.
As it was turning over even before it started I could tell the difference. That's good humor!
Great video. Very helpful. Very well explained. 👍
I have the 07 Chevy Trailblazer as well. I just replaced my water pump at 198,000 miles, so I might clean the throttle body as well. Thanks Jeff 😊
+Daniel Kelly thanks, it's pretty easy to do.
I've been searching for this problem for the longest
I used an old tooth brush when I cleaned mine with a micro fiber cloth, like he said it does help with start up and I noticed better take off, it use to hesitate bad, also replace your plugs which helps too, good luck!!
Yep, can't go wrong with new plugs.
Awesome video!! 🤗
Thank you for the video. It was super helpful.
Awesome, I'm glad it helped.
Great video! Thank you 😊
Very well explained compared to other videos I have seen doing this job. Thumbs up man!
+TheRealMrJL thank you!
Cheers Bro Great Informative vid . You Rock Man.
Thanks Buddy! I'm glad you enjoyed it.
Thank you very much for this video . Saved me lots of time and money !
Thanks Jeff!
Thank you! Short and sweet! Now this single momma is going to go fix her kids truck!
You got this!
I pulled fuses #10 and #28 before starting. Took no time at all after I watched this video. Vehicle runs very smooth and the engine light went off. Thank you!
+Jeff Film awesome! Glad it helped you out. 👍
Do you remove the positive terminal from the battery THEN the remove fuses for 15-30 minutes? Or do I leave the battery plugged in and remove the fuses
@@benitesw321 I know i'm a year late here, but just remove the fuses for the 15 or so minutes. you remove the fuses to "simulate" the PCM losing battery power, without running the risk of damaging your HVAC system. These trucks are, from what I hear, notorious for damaging the mode door actuator because of the way it slams between settings when battery power has been disconnected and reconnected. Any GM techs or H.B.W. can chime in on this though with more detail. That's just what I've heard through the grape vines.
@@tdmfan750 what fuses do you remove?
Great job!; thank you!
Nice video. My 2005 Trail Blazer has been idling rough for several months now, Chevrolet dealership wants to charge me $250 for fuel system service and $275 for a tune up.
I have a 2003 5.3 Silverado. The truck also shown "Reduced Engine Power" light on when it was 7 degrees above zero. This only happen when it was cold (outside temp). Thus said after watching the video, went to clean the throttle body. The problem was fix. Thanks.
+Ron Barnes awesome! I'm glad you were able to fix it. Thanks.
Thank you so much. Very helpful and I appreciate how you showed each step clearly.
One question do you need to disconnect the battery while you are working?
That was good thank you so much telling us
Appreciate this.
Thank you so much!
This was really helpful and super thorough thank you very much!
I'll give it a try
Just an update from my previous comment, this didnt solve my problem (but probably didnt help cause the throttle body was filthy) but this video was very helpful. My harness was on the back not the side so was harder to see(also I'm 5'3 so didnt help lol) I dismounted the throttle body so that I could look at the connector at a different angle, I could then see the prong that needed to be push. I had to push it in with a screwdriver and pull with my hands but with the pressure from the screwdriver it was nothing. Good luck to all with filthy throttle bodies and with trailblazers
just you looking towards dude made me subscribe lol then comments said great video. i know how to do this but came across your video. about half way through the video and great job man. my kids could probably follow along with you. honestly i might show my 8 and 6 year old this and see if their up to the job! thanks, enjoyed your video
4 years later and i’m about to pull mine off tomorrow in the shop and clean it
Good luck. Its not hard to do. You got this.
I have a similar issue on my nissan versa. I will do this and post how it went! thanks
+Miguel Angel please do, I'd be interested to see how it works.
Do you know of a computer memory saver that we can use when disconnecting the battery? I heard these really help
excellent
Good afternoon ... please have a video of how to change the crankshaft sensor for a Trailblazer 2004 4.2 6L please
hey on my 2004 chevy trailblazer I have a red battery light on and bat and alt is brand new can you help me
Thank you video was very helpful. I too received one of those recall letter for the TB sensor from chevy. I did everything you explained today....I disconnected the battery before replacing the throttle body and sensor on a 08 chevy upland 3.9 flex fuel. I am experiencing rough idle now other then that the van is operating excellent. I do want to add that I was battling a ck engine light for some time with code P0174 (BANK 1 LEAN) Prior to this work done I had replaced all 02 sensors with no luck also tested for leaking fuel injector which tested negative. So I'm going to take your advice and be patient and see if computer recalculates for the roughness
Sounds like a bad MAF sensor.
I have a problem with my Trailblazer when im at a stop or red light and when i press the gas to take off it doesnt respond it kind of hold back a bit and then takes off. Could it be the throttle body? Thanks in advance.
You're talking about removing #10 fuses, do you do that, with the key on, while waiting for 15 minutes, prior to starting the vehicle? 03 Trailblazer 4.2 Thanks again for the video! 🤗
You have the exact same vehicle as mine. Have you ever replaced the fuel pressure regulator? Did you make a video? Any tips where to find and replace this part. There’s loads of videos for 2005 and earlier but I can find nothing for the 07. Thx
I was getting codes p506 and p1400 on my 2007 trailblazer. Took about 45 minutes to remove the throttle body and clean it.
I left the codes alone before I cleaned it. After cleaning and reconnecting the battery the codes had cleared.
Truck runs as if it were new.
The bolt on the throttle body that is on bottom close to firewall is the toughest to remove. I found it easier just to break it loose with the socket and finger remove it.
Awesome. I'm glad you got it fixed!
had error code po121 replace tps error came back clean throttle no more ck engine light and pass smog and notice more engine power great help thanks
Awesome. Im glad you are back up and running.
👌 👌 thanks!!
I'm doing p0303 spark plugs P0496 Eva purge selenoid valve p0128 cooling thermostat P2135 throttle body P0606 control Module processor..
I'm doing it today
Nice video over 100$** (first ima clean throttle body)
After cleaning the throttle body, how many RPM should the tachometer read? thank you
I tried this on a 2006 4.2 and it ran worse the mechanic told me those body or electric and if you move the valve the computer have to be reprogrammed again it was a hassle can you tell me what happen ?
Awesome video! I have a question my 2005 Trailblazer LS i6 with 104,000. I got it from my grandma since she want to down size her vehicles. So i change front, rear differential fluid, transfer case fluid and soon m going to do the transmission flush (not with the flush machines) i also replace sparkplugs, and belts. anyway my TB does not idle rough or giving me any sign of weird RPM BUT it dies on me twice when i shift into REVERSE from parking.. i was like what the heck...... so some say throttle body some say sensors.. just wondering what you u recommand that? Thanks
You could try cleaning the Mass Airflow Sensor with some sensor safe MAF cleaner, otherwise cleaning the Throttle Body might be an option. You might see if you can read any engine codes that may be stored in the PCM. Maybe there will be a clue in there.
Hi body thanks for your great vídeo. I want to ask you a favor. If you can give me the dimentions of the valve cover on your truck?
This helped me big time! Thanks for the help, although not your fault, I can't seem to get all the crap off the TB, I used Seafoam and it got maybe 80% of it clean. Any idea why I can't get this all off? I noticed a big improvment in my acceleration tho! Thanks
It must be really caked on your TB. That's about the only thing I can think of. I'm glad it running better though. 👍
Really caked on, mine was not as bad, but I used a scuff pad, which worked very well 😅
Hi Jeff;. I have GMC ENVOY 2008, I followed all the instruction that u did for cleaning the throttle body but my RPM become v high as it was before cleaning 700 while now it's 1500 at P & when transfer to D it become 1100 & the temperature become v high, so please help, Thanks
I'm going to ask a friend about this for you.
Hello. We appreciate your comments
Thanks for this Tutorial I’m not an car savvy person but I was able to do this with no problem and all I had to pay for was the body throttle cleaner
Awesome! I'm glad it was helpful.
So after the cleaning do you have to disconnect the battery or does the cpu automatically adjust settings
Its not a bad idea to disconnect the battery first, clean it then reconnect the battery. You shouldn't have to do a relearn.
Now i know why my envoy doing that samething but mine shuts off once i hit that ac buttom but i did disconect my battery that why i had that same problems
I'm getting oil in the (?) intake breather box (?) on a 2004 gmc envoy. Any suggestions? Doesn't seem to have a pcv at all.
Blown Intake plenum gasket
Now before you took the throttle body off did you take off a battery cable or still able to keep it on?
clrkkent I left it all connected. Just making sure the key was off.
I have a 2005 Chevy trailblazer i6vortex my idle is low but when I turn on my heater on I cleaned the throttle body twice text me what I can do thank you
I have a 06 tbss 6L I keep it stored for weeks at a time, I always disconnect the negative terminal, never had an issue with this.. weird
nice
Thanks
You can clean the TB on the vehicle. Fixed mine.
To clean it properly you should take it off and clean both sides of the throttle body.
I know this is an old video, but hopefully, maybe you have some input. I have an 07 TB upon acceleration it'll bog down like, as if I let my foot completely off the throttle it does it for maybe a second or two then drives perfectly fine. Any ideas? Thanks
Push the throttle down a second or two before you need the power.
@nojunkwork5735 that's not what I mean. It's only happened twice now since I bought it but it was like the pedal was dead I put it to the floor or even just press it down and nothing happened zero throttle input was being registered. Since I posted this comment it hasn't happened. The only thing that happens now is my damn battery keeps dying. I had a code. Can't remember the number but it said something about the car not registering when it's on or off. Which is annoying but I only paid 500 bucks for it so I can't really complain.
02 Envoy two weeks ago driving down the road boom backfire 45 mph motor dies cranking cranking fired up but after checking 2 coils were bad replaced those new plugs 3 cam engine sensors .Only has 113k mi and is still running terrible Was just fine before it backfired ?
Wow, Thats crazy. I wonder what happened to cause all that at once. I hope its good now.
@@homebuiltshop Coils are all good now 3 sensors switched out not missing now has some power back but running really rough Advanced auto scan still says that one cam sensor on frond of motor its brand new .I don't know all this shade tree dude can do guess will have to get wallet out take it shop .Almost running like it jumped time but not what codes say .
Hey what was the recall for? I have the same truck and I'm praying there's a recall for my issue. Thanks
+Limit AK it was something with the door buttons. Something about them catching fire, nothing too serious. Lol. Also, my gas gauge was not working, that was also covered.
hey how would I get a broken bolt out of the block of 2003 chevy trailblazer thermostat housing
Joe Dye if any is sticking out maybe so.e vice grips could get hold of it. If it's flush you'll probably have to drill it out and use a screw extractor. I don't know how hard it will be to get to though. Good luck with it.
thank you brother
If ya screw up drilling it out and break a bit off in the bolt like my genius self did get a rescue bit, they're like 60 bucks but talk about a life saver, they'll even drill through an easy out...too legit to quit
did you have to reset the throttle bory after you cleaned up
Nope, I just drove it around and the computer relearns the info it needs.
Hi I bought a 2018 Silverado dealership had to put a new engine in it the engine has 63 thousand miles on it but it run good drive good but when I come to a stoplight rough but it run smooth do u think my body throttle need to be clean
Hi it’s me again they the engine out of truck 4 a month so I no they did not clean the throttle body it might need to be clean they had body throttle cover up
Its a good possibility it could use a cleaning.
Do you need to do a relearn for the throttle body that’s all that’s stops me
I didn't have to. It fired right up after I had everything connected.
I have a 2003 Envoy XL, my idle seems fine but it burns gas like crazy, will this improve my gas mileage?
+John Henley it's possible.
John Henley iknow its late you ever fix? I had same problem but i had a check engine light and it was the secondary air injection valve.
Did you open the flap and clean that as well?
+Cody Smith I cleaned it from both sides.
Cool, I opened the flap and cleaned both sides also. I was hoping it'd get rid of my rough idle but it didn't. I think I have a bad VVT and camshaft position sensor.
Opening the flap by hand is a not ideal. You prob just need a new TB
did u have to take out fuses. or the #10 an #28
I didn't remove any fuses. The computer should relearn everything.
He is WRONG! You do take out them fuses BEFORE you start taking off ANYTHING! That way the computer does not have to relearn it'self .
You are right, but it's not so that the computer doesn't have to relearn things...You must disconnect the fuses and reconnect them SO THAT IT DOES RELEARN how to run properly with the NOW CLEAN throttle body.
Flap Erball I have used the cleaner to clean my throttle body running and stepping on the gas is what the cleaner can saids , but I have not disconnected the sensors after I cleaned , should I do just that so the computer relearn that the Tbody has been cleaned ?
How to Clean a Throttle Body (2007 Chevy Trailblaz: th-cam.com/video/XWNlP5FFZ-A/w-d-xo.html
how many miles was on the vehicle when you did this sir? Thanks!
Around 100k.
+Jeff Baker Thanks for the reply. My 2011 Acura TSX V6 is about 73k and getting same issues as described in your video and also at WOT (I have a video of this posted resulting in misfires, knocks) also did a crankshaft relearn, but I think it's time for a tb clean :) thanks brother
will i disconnectthe battery? yes or not.
Yes. It's a good idea.
Do you have to do the " relearn process " ?
+Daniel harvey The chocolate kyle kulinski from what i know about it, the computer relearns as you drive. I didnt do anything special.
just what I needed thank you
+Joe Dye you're welcome. Glad I could help.
oh you did very much
my 2004 trail blazer runs good until I turn on the ac then it runs bad
I cleaned my throttle body and reinstalled and now there's a lack of acceleration. I try to pull out into a turn and give gas and there's nothing but regular pull. I have to push to the floor to trigger acceleration and then let off to get more speed. Is there something else I should do? Should I unplug the battery for a long time? Will that help?
Sometimes when you disconnect the sensor or battery you have to a manufactural drive Cycle so the sensor can Re learn you can look it up online every Vehicle is Different
@@DIESEL250 thanks I'll see. Since I cleaned the throttle body I've worked on cleaning the catalytic converter. Still sluggish. I'll see about a relearn process. Thanks
Not exactly sure, but I heard something about a throttle relearn combo. Something along the lines of turn vehicle on, turn off. Turn to aux power, off again. Fully press gas pedal 3x and turn on. Then do about 45 mins highway driving.
Like I said, not sure if it's actually a thing, but may be worth looking into. Or just take it to a shop and ask for an idle reset. Unfortunately, I also heard you need a more specialized scanner in order to initiate the idle reset. But, hopefully that's all you need.
Dirty O2 sensors can also cause TB's to go into limp mode while driving. Basically RPM drops while you're driving. Which can be scary, but relatively cheap fixes. You can even take them all off and soak them to fix em on up.
Would def try that before potentially spending a fortune on cat conv.
What about resetting it?
Would a dirty throttle body cause battery charging issues
I'm not a professional mechanic but I dont see how the 2 could be related. Maybe have the charging system checked if you haven't yet. Many auto parts stores can do that for you.
Already cleaned with brake clean sprayed on a rag lol oops. Seems fine 2000 4.3L S10
Getting those wires off the throttle body is tough. Can't get it off for some reason.
+EagleLogic you can try to very carefully pry with a small screwdriver. Don't break the plastic though.
Okay I'll be messing with it. Worse comes worst maybe I'll just clean the throttle body with a rag while it's still connected.
+EagleLogic it can be done with it on if you're careful. Good luck.
I've found when you have difficulty with these old plastic connectors hit them with a little silicone spray first.
God bless
this video saved china
I know this is an old video. I have the same issue. Replaced battery and boom. Do I need to disconnect one or both battery terminals?
+James Taylor I believe just the positive cable.
I'm working rn lol
What about power loss ishue
Cleaning the throttle body can help with this issue as well.
I have cheavy tahoe 07 model but can't found problem...it's misfire and can't moving in fast ...plz help to know the problem?
zaman khan check the spark plugs for a misfire they might be full of oil or just old. Try replacing the old spark plugs with new ones. That should help with your misfire hopefully.
I cant get that darn connector off.
Always start bolts by hand? DUHHHH!!! Starting em with your feet would b extremely difficult.
I was thinking teeth. Thats an extreme challenge. Lol.
Very good tipping , but you are messing up the ground your driveway with cleaner fluid . Thanks