Throttle Body Cleaning GM 3.8L Series 2 (Naturally Aspirated/ None Super Charged)
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- เผยแพร่เมื่อ 5 ก.ย. 2024
- Please read entire description before attempting this!
In this video I'll show you how to clean the throttle body on a GM 3.8L Series 2. The vehicle featured in this vehicle is a 2001 Pontiac Bonneville. (note: this procedure may not apply to every 3.8L series 2 engine out there. If your vehicle has a super charged 3.8L then It would not be advised to do this. Do not clean the throttle body in this manner if you have a super charged engine.)
Cleaning the throttle body is one of the easiest and best things you can do for your vehicle. It helps to maintain throttle response, engine idle and overall performance. Also, its supper cheap!
Use intake cleaner not carburetor cleaner.
Do note: Disconnecting the battery on some vehicles will put the radio into "anti-theft" mode. If this is the case for your vehicle you will need a code to get your radio working again after the battery has been disconnected. This code is usually located on a card in your owners manual. Be sure you have it before doing this.
Also Note: After spraying intake cleaner through the mesh let the vehicle idle for a while and then rev it a few times to help get the intake cleaner off the mesh. Also, after letting it run and reaving it a few times take some compressed air and spray it though the mesh. The goal is to remove all of the chemical from the mesh so you'll need to clean every inch of the mesh, every hole. MAKE SURE ALL THE INTAKE CLEANER IS COMPLETELY REMOVED FROM THE MESH. Do this before putting the MAF sensor back into the throttle body. By making sure all the chemical is off the mesh before installing the sensor you will prevent potential damage to the sensor from contamination.
Read and follow the instructions provided by the maker of the intake cleaner used.
Perform cleaning in a well ventilated area!
Warning! Doing automotive repair is dangerous. Use extreme caution! Heed all warnings applicable to the project you are performing. Read, understand and follow all warning labels located on the container of any chemical you may be using! Keep hands face and body away from intake as back fires can happen. Have a fire extinguisher readily available. Repair your vehicle at your own risk!
For tool reviews and product recommendations visit my store front on Amazon by clicking the link: www.amazon.com...
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DISCLAIMER
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for your vehicle is essential for correctly and safely performing ANY repair to your vehicle. Always wear safety glasses and heed all instructions for use applicable to any piece of equipment you may use. Due to circumstances out of the control of Barbours Auto Help, Barbours Auto Help makes no guaranty that by the use of the information given in this video a quality repair will be made. Barbour'sAutoHelp makes no guaranty that the information provided is totally complete, syncronized and accurate. Verify everything using an appropriate repair manual. You can do it. Do it right and do it safely.
Repair your vehicle at your own risk! Barbour's auto help does not guaranty a proper repair using these techniques.
Here's that link to to the video mentioned in the video:
• Battery Replacement 00...
Here's a link to another video showing this done in a similar manner on a different car:
• Does Seafoam Actually ...
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You can take your honeycomb mesh screen off to clean inside better. There is an internal snap ring with a hole in each end that holds it in. Put a nail or something small in one of the holes and take out that end and work your way around until it falls out. Be careful not to damage the honeycomb.🙂
Thanks I am going to look for this snap ring.
Thank you so much! I had no idea how I was going to get around that screen until I read your comment.
@@TheyAreHere2 You're welcome. The snap rings aren't real obvious it took me a while to find it.
Q@@TheyAreHere2
I have the eight cylinder Northstar, should I take the whole throttle body off and if I do will I have to buy a gasket to put it back together,
Thanks Rocky
Thank you for these 3.8 videos, there’s not a lot of them out there specifically for Oldsmobiles or Buicks with the 3.8 engines.
As a buick owner just want to say thanks for all the help!
No problem
First off nice how to video. Second the never ending honeycomb filter debate. To remove or leave in? The only reason the screen is the throttle body is too straighten the airflow going over the mass air flow sensor itself. Why? To help provide the ECM with a steady accurate reading from the mass air flow sensor at idle. Yup that's it! It improves your idle by basically stabilizing the airflow going into it. Is there any reason to remove the honeycomb filter? Yes! Flow bench tests have shown time and time again those honeycomb filters restrict 10%-15% of airflow going into the engine. Therefor causing less high RPM horsepower, hardly an issue for a everyday driver or commuter car. I've been working on the series II 3.8 for well over a decade and have two of these engines in my own privately owned cars. I have one stock 3.8 in a impala and one 3.8 SC in Pontiac GTP with motor modifications done. Both have the screen removed and both idle just fine. I've actually had the 3.8 supercharged series II on a dyno and seen a HP gain of 13hp removing both the screen and stock airbox. Can't say what the amount the screen was responsible for since both where done at the same time. But a educated guess would be a 3-4hp gain.
Do you think it's safe to clean the l67 sc 3800 throttle body like this?
Thank you for this comment.
I've got the Northstar eight cylinder, should I take the whole throttle body off to clean, will I have to have a new gasket to put the throttle body back on or is it machined
Thanks Rocky
Man you just helped me fix a problem I have been trying to figure out for awhile. Thank you.
Cool!
Dude You're a beast for this video thanks a ton I'm about to be doing this in an hour and its way different than the 3800 series 3 I'm used to. I'd be lost without you keep these videos coming
Well thanks.
My 03 Lesabre idled kinda noisily before doing this and now it is super quiet. I noticed also while trying to manually open the throttle that it would get stuck due to the buildup(didn’t really notice when using the pedal) and now it doesn’t get stuck. Amazing video! Mine would stall out if I sprayed it without opening the throttle(even a tiny spray) so as long as I opened the throttle a little bit I could spray this in there without it stalling.
You could also get a new throttle-body gasket, and remove the throttle body to clean it. That way, you would remove the egr crud from the back-side of the throttle plate. You are only spraying the front of the plate. I bet the back side still is coated with sticky black goo,
great, simple but thorough video
Excellent video! My throttle body had a significant amount of carbon build-up so I just removed the entire unit to clean it up offline. After reinstalling I also did what you did to pull the cleaner through and help clear up some remaining junk. Also the mesh disc comes off very easily for better access to the throttle butterfly. Nice work!
thank you so much!!!!!. I will be doing this tomorrow morning. I appreciate you doing this for us all. YOU ROCK!!!!!🎉
Thank you, I enjoy your videos. Something odd happened in my car when I did this on a 3800 Series 2. There was a pop at one point and some smoke... somehow the vacuum lines popped off and one of their boots melted slightly. I also managed to stall the engine a few times doing this, even though I was using the throttle wire to rev the engine. No big deal, works fine now -- but it was very unnerving.
Glad everything is ok.
@@BarboursAutoHelp Keith, I took another stab at this and decided to remove the screen with a snap ring tool. I feel like it made the job so much easier and I could actually clean the throttle butterfly with a blue towel. Also helps to ensure it's entirely dry before putting in MAF.
thank you thank you- worked like a charm/ starts runs idles like new
There you go!
Just wondering why didn't you take off the entire throttle body assembly for a more thorough cleaning?
Shouldn't need to if you keep up with the maintenance regularly. A light cleaning should do fine.
@@BarboursAutoHelp my car hasn’t had this maintenanced I’m pretty sure because I am 2nd owner of a 1990 Oldsmobile I bought at 48k miles it is now at 66k miles over 4 years that I’ve owned it. Should I be looking to remove the whole filter since it is most likely not a “light” cleaning?
That's your call.
Sweet advice mane...stopped the throttle from sticking just like he says. I also found out how blocked the air intake must have been because a loud whistle went away following this advice. Great video indeed!
Thanks my 02 firebird is hiccuping when I mash the gas, going to try this, subscribed.
Do you have any videos on how to do this for a supercharged pontiac bonneville? My car is experiencing rough idling and surges and i would like to do this but im having a hard to finding videos on how to clean the throttle body for a supercharged!:(
This video saved me a major amount of trouble !!!
That's exactly what I like to hear!
You have been so helpful, Thank you. As a woman, it's not easy going to an auto shop because I don't know if I am been taken advantage of. Would you have a link to order the special tool T20?
I don't. But, quick google search will get you there. Remember it's tamper proof.
I picked up my T20 tamper proof at Menards for less than 5 bucks.
You could buy a snap ring pliers For 20 bucks in autozone To take off the snap ring on the throttle body that holds the screen It's usually at the bottom of the screen You'll see 2 little holes To insert the snap ring tool
thanks for the video, good explanation! gonna do this to my car tomorrow!
My car did not like this haha! Blew some smoke and quit on me 3 or 4 times, thought I hydrolocked the SoB!
thanks for the vid. Already ordered a torx set that includes tamper proof bits as well as the spray cleaner i'd need. definitely keeping this vid pinned for when i get the chance because there's a little bit of a rough idle and, with it being 16 years old, it would help to clean the MAF sensor anyway as a preventative thing while it's separated anyway.
so how did it go bro? did it fix any of your problems?
@@RealbruvYT haven't had a chance yet.
@@killer13324 damn
Thanks for the video! Did this in my identical motor (1999 Olds 88) and after finishing I got a misfire in cylinder 2… pulled the plug, to check it, all seemed fine. All brand new plugs wires and coils 3 months ago. Any ideas? I’m a wanna be mechanic. No codes or misfires before I cleaned throttle body.
that could be dirty fuel injectors… or it’s moisture somewhere it shouldn’t be.. i just had that happen to mine as well. i’ve got a 1998 oldsmobile 88 same motor. i checked my plugs, packs and wires and everything was all good. i now have noticed that sometimes after driving a long period of time, i’ll fuel up, and as soon as i turn the car over, my car will roughly idle between 1000rpm-2000rpm. it goes up and down, and when it goes down below 1000 it feels/sounds like it wants to stall out. i’m not too sure what it could be, i’ve been told it’s probably vapor lock.. as soon as i stick the car into drive and press on the gas, it wants to die on me so i have to really kinda get goin on it before it dies out on me. all as this is happening my gas pedal is stiff, i hope cleaning this will help me in my case! for as i’ve already replaced my idle control valve..
and the rough idle only happens after driving a long period of time.. such as 200+ miles. my car is at 180k miles as well lol. i’ve replaced almost everything, just the motor is stock and original.
exactly what I needed brother, thanks.
Hi Keith; you removed the "snorkel" off the throttle body with SUCH EASE. Did you use a lubricant or anything to assist with that?
I'm having no progress removing the snorkel with my bare hands as I've seen other people do in their videos. I'm wary of using anything to pry it off as I don't' want to damage the seal or the TB itself. And I'm wary of spraying any lubricant because I don't want to get anything in my intake.
Any advice for removing a snug snorkel? Thanks in advance!
You could try a plastic non marring trim tool. Just use care not to rip or damage it. Be careful what you pry against.
When I sprayed it with some cleaner on the outside of the rubber it flew off. It's still really difficult to get it back on
@@HellNoKamala Oh geez. Please don't tell me that. lOl
@@sharyndaley-zackery You can do it but not simple as it's smaller than what you're fitting it around. I just cleaned mine again and try a soap spray?
Thanks for the good idea u just solved my problem on my 2005 buick park avenue 👍😎
No problem 👍
Will this work on a 3.8 with a supercharger?
Have a magnet Next to the screw So you don't drop it When removing screws Also place a RAG underneath
Is running the engine without the snorkel and MAF bad for the engine at all?
this worked for me fixed my problem thanks man
Glad I could help
Thank you for this video. What type of socket should i ask for at parts store to take off my Mass Air Flow sensor? Thank you again for your video. Im a diy"er" and videos like your's really help.
My ‘03 Lesabre used a T20 bit
I've watched about how to clean a throttle body on my 2000 Buick LeSabre, but it said not to have the car running cause you don't want the cleaner to go in the engine. I'm just searching for the best help I can to do this myself being a woman. Thank you. Please answer me back
Read and follow the instructions on whatever product you use. That should put you at ease.
I cleaned my TB now I have reduced engine power code and check engine light same car
Did you leave something unplugged?
I don’t have a t20 with a hole in the middle of the bit to remove the MAS so I literally used pliers lol
Very helpful. 2003 impala. Thanks! 🇺🇸😎
MERICA!
We got a 2001 Buick LaSabre with the 3800 engine, do I need to use Mass Air Flow sensor cleaner as well? Or is that just a gimmick? I got throttle body cleaner. Car has 178k miles, and we inherited it late last year with no records or knowledge of its service history- its come down with a rough idle and so we're going to use your video to clean throttle body to see if that helps. I just replaced the PCV valve as well.
looking to complete this tomorrow. having trouble with sticking pedal and a P0122 code on 1996 buick century special sedan. replaced TPS sensor & confirmed wiring good with voltage tester. going to get compressed air to complete this job tomorrow. You stated your pedal no longer sticks. did you have any codes on vehicle before completing job? I understand removing MAF sensor creates codes also great video on removing battery.
I did not have codes.
@@BarboursAutoHelp thanks for your quick response!
No problem
I’m concerned I’ll get a check engine light. Can I just take the mesh off and spray TB cleaner in with the airflow sensor out (I’m replacing it) and just wipe the TB clean after spraying it? I just don’t want the check engine light issue. Thx.
Can you help. In cold weather my choke won't release at operating temperature.
How do you clean the throttle body of a Buick with a 3800 Series 2 supercharged engine?
This is awesome.
I have a question, I read a comment that says you can stick your finger and push the honeycomb filter out or mesh filter how ever you call it,and this way you can clean it diaper.
Is that possible
Its possible but hard to do without damaging it. Imho there is no need to if using a good cleaner.
@@BarboursAutoHelp thank you very much!
No sweat
Are there different steps if your have a supercharged one ??
my car hasn’t had this maintenanced I’m pretty sure because I am 2nd owner of a 1990 Oldsmobile I bought at 48k miles it is now at 66k miles over 4 years that I’ve owned it. Should I be looking to remove the whole filter since it is most likely not a “light” cleaning?
Hello, can the mesh be removed for a better cleaning?
Do you disconnect the battery before removing the MAF Sensor and then reconnect once it is off to run car while cleaning the throttle body? Or is the battery disconnected and then reconnected after this whole process is done?
Thankny pou for the video. I have never worked on this type of car before and feel stupid for asking this. The t20 scres what size socket do I need to remove it?? I went mechanic and they want to charge me over 100.00 to fix the issue. I would really appreciate some help here and thank you in advance.
No problem at all. Its a T20. or "star bit" as some folks call it. 20 is the size. I believe it was tamper proof so it will have a hole in the head of the star. Just get a set of small tamper proof torx bits and you should have a T20 in there. Its a common size. Make sure they are tamper proof.
I just bought a 2003 Monte Carlo SS, aKa 3800 series 2 like yourself.. I’m not sure if my issues could be solved just by cleaning the throttle body but I’m bugging out over it, the car won’t go over 4k Rpms when you floor it and is extremely sluggish to accelerate. No check engine lights or codes
Have you checked the fuel pressure? Also, how does your air filter look?
@@BarboursAutoHelp that was my next guess but I’m letting the guy who sold it to me take a look at it. I think it’s maybe fuel filter or a clogged cat. Hoping it’s something simple but he’s had it for a few days and I haven’t heard anything, it’s extremely frustrating lol. I love the car though and I only had it for a day
@@BarboursAutoHelp also the air filter looks brand new I’m pretty sure it was changed just before the car was sold to me
Nice video AWSOME Job! but could you or others give me some advice please. i own a 2004 Olds Alero 3.8 ( i think lol } it runs great but when i start it up it smells gassy i put B32 injector cleaner in it , it did ok but still smells gassy whats wrong
thanks for any advice
if it's an alero it'd have a 2.2, 2.4 or 3.4 lol
i would check gas cap, fuel lines, and fuel filter
@@anthroism26mc thanks gas cap is gpod
Champion. 🏆🎉 Thanks!
Why should I not do this if it’s supercharged?
Thank you for the video.
You're welcome
I have a 3800 96 camaro and I have followed all instructions to a tee and now when I plug up my maf my car does not run. I’ve tried three different mafs and same thing. Nothing works but when I keep it unplugged car runs but runs very rich. Please help. I can’t figure it out and mechanic can’t figure it out. Help
Did you erase codes and then try it?
I have a 1990 Pontiac Grand Prix 3.8 what's the easiest way to put a heated throttle body back on mainly the two rubber water hoses
Are you having a hard time getting the water hoses on? What exactly are you having a hard time with? How so?
BarboursAutoHelp what are the length of the two rubber hoses that connect between the throttle body and the two metal water lines
Oh, I can’t recall. You may be able to buy a long section of that hose at the parts store and cut it to length.
I have a 2007 grandprix 3.8 reduced engine power light comes on got it scanned it said it was something with the peddle got that replaced it still didn't fix it got it scanned again it said it was the throttle body got it clean it still didn't fix it should I buy a new throttle body?
Check mass airflow sensor
I would think a tooth brush could work good on the honey comb cover to clean it.
It’s not the cover that need cleaning it’s shat is behind the cover like the IAC and the throttle plate.
^what^
^what^
What happens if you do this with the MAF sensor plugged in? Risk of damaging the sensor wires themselves?
It will damage the sensor which can be expensive to replace
thanks for the video helped out a lot was just wondering is there any way to remove that screen to get in there a little bit better
There is a way but the screen isn't the only thing in the way. So, in my opinion, it's not worth it to take it off. If you want to clean the plate by hand then the best way to do that is to take the throttle body off.
@@BarboursAutoHelp thanks
My 2000 SS monte wont stay running, it will start and stay running while i give it gas, but as soon as i stop it dies.. i removed the MAF and IAC for cleaning, but i snapped the heads off the t20 screws holding the IAC module in , so hopefully thats the issue
I hope so too. Where you able to get the screws out?
BarboursAutoHelp in a way .. the iac module fasteners got stripped .. so I had to drill and tap the bottom one for a fastener ..and it's only has one in it ..
I see. I hope it holds.
Exact problem I’m having on 01 Lesabre. Guessing this will work.
Does this work on a firebird 96
I’m having many of the same problems as others are saying in the comments.
I have same vehicle 03 le sabre that your working on in this vehicle. Stalls while driving. Revs up but won’t switch into gears correcectly. So I’m gonna try what u did in this vehicle.
Another thing is in the owners Manuel it says to flush transmission fluid and change filter at 100k miles and I have 122k miles on my car. Do you recommend me doing a flush and cleaning it all up and see if my car runs better that way. Because all problems I’m having seem to be what everyone is saying and my mechanic keeps telling me that my transmission is on its way out
Id listen to your mechanic. He's seen your vehicle and has probably driven it. He would know better than me.
Is it ok to just let mesh dry for a few hours instead of compressed air?
Its possible some of it will not dry all the way.
BarboursAutoHelp ok thank you just had my buddy drop off can of air
Once you have to scream out of the throttle body you could get in there with a toothbrush And throttle body cleaner
I replaced purge valve now I Need help with Service vehicle soon light ? Does removing negative cable help to rest ? Thanks!
Yes, for 10 minutes
So removing the mass air flow sensor will keep it from dying while you spray .. ?? .. Ime fixing to do this to my car today .. any advice would be greatly appreciated ..
No, but working the throttle will. Just like in the video. Remove the MAF in order not to contaminate it.
Amazing!!!
Hi, I started doing this but I forgot to wait 5 minutes. Anyway when I tried to spray while it was idling it cut off twice. I hot a little bit but not much. I still have over half a can left 2002 Buick Regal. Please advise 🤔
I later on after writing my first comment I got a scanner SC204 OBDII/EOBD. The codes that came up are P0102 P1035
You gave me a bunch of info but what's your question? I guess I could assume what you would like addressed but it's best I don't. What specifically is your question?
I was wondering why my car was cutting off while I reved up the throttle body I didn't flood it. So I was hoping for a tip? I want to get enough cleaner to be cleaned as well for the IAC but I'm not sure I did. I it did help of what city was able to do.
Where can I find that socket?!?
Can that in fit the rear wheel drive 3800 : )
genius! thanks
Hopefully be doing this one soon. Thanks so much!!!
I have a 03 parkave i have to hold the gas down to start and when running it seems a lil idle high would this procedure help?
Yes it might. I had a 05 allure that would stall when starting cold. It solved the problem.
My buddy put a small scratch in the mesh screen while removing the snorkle. He had never done this before and had a hard time so he pried it off. Should we have any concerns?
I've done that before. I don't think you should have any problems. Only one way to know for sure. See how it drives.
@@BarboursAutoHelp Ok, Thanks. That is what I was thinking. I will see how it goes.
@@BarboursAutoHelp Hey Keith, I was just about to try this cleaning method and upon reading the instructions on the can of Throttle B cleaner, It say that it is not to be used on cars with a supercharger. Mine has one! Any recs?
Thx
@@mrt1626 Yes, I would not do it this way then. The best thing you can do is take it off and clean it off the vehicle.
What was the symptoms?
Hi, any chance I can approach you privately for help?
Thank you
I'm more than happy to help any way I can, but we can do it right here.
Can I remove that mesh looking honeycomb screen thing in throttle body?
You can but I wouldn’t. I had a pretty lengthy chat with another person about this below. Just scroll down a bit.
it's held on my a big snap ring kinda. Or at least it is on my 1997 Camaro.
Bad Ideal
Can u use carb clener
I would only use throttle body cleaner.
Anyone have stalling issues?
Can I use brake cleaner?
Negative.
Should i turn engine on to clean?
Not sure what you are asking.
@@BarboursAutoHelp keep car running than spray throttle body?
I think the video showed this didn't it?
@@BarboursAutoHelp thank you 💯
isn't there any way to remove and reinstall that mesh for a better plate cleaning?
It’s very difficult to remove the mesh without damaging it. Plus if you do get it out you will not be able to reach the throttle plate.
BarboursAutoHelp then I don't have other option than work through the mesh
my Pontiac Bonneville 97 has the same engine size Ok I'll follow up all your instructions in the video
thank you your videos saved me a good money 👍
Well. You could take the whole throttle body off and clean it from the back side, but that would be a lot of work. Just make sure you get ALL of the intake cleaner off the mesh before you put your MAP sensor back in.
BarbursAutoHelp
Yes it's a lot of work , I'll just clean it I already have the cleaner stuff .
thank you
I’ve heard some people say it’s held in with a snap ring but you’d still have to use a pick to remove it
You can't hydrolock a 3.8 from that.... can you? I though the engine had to be literally submerged for that
Yes, you can. It's hard to do but it's possible. Thats why I suggest a little at a time. Better to er on the side of caution ⚠️.
You can and the engine would be fine after doing it just pull all the plugs and turn it over dry or replace plugs and it'll fire up
I have a 2004 Century, low k/m's. And my son's Mitsubishi Lancer needs a TB (throttle body), which costs $1000 at the dealer, can you believe this modern BS that we have to take today. So the mechanic installed a used T-B $150, it failed, of course, so Saturday he will try another used one. Mitsubishi is more popular in Asia, but here in America, not so much.
Can you use CRC Throttle Body Kleen?
I have info in the description about what can be used.
Yes
Would Maf cleaner work?
Not nearly as well.
👍
Thanks for replying!
What throttle body cleaner do you use? CRC?
I did in the video. But, CRC is not a sponsor and I'm not getting paid by them.
BarboursAutoHelp Just asking to make sure no special brand is required. Thanks!
Are you using this spray: CRC 05078 Throttle Body and Air-Intake Cleaner
Because in other videos explaining how to use that spray they don't spray much. Also, after spraying they dry it with a rag, so I'm afraid to spray it through the mesh and possibly leave it wet inside there. Any thoughts?
I have a 93 oldsmobile 88, wanted to clean the valve while I was changing the air filter but didn't know removing the honeycomb mesh thing is almost impossible..
Ive got some good info in the description about it. It must be completely dry after cleaning. It’s achievable without a rag.
Got you, is the purpose of compressed air is to push the liquid out or just to make it evaporate faster?
My worry is that the dissolved gunk might still sit behind the mesh if that makes sense?
Just by changing air filter my vehicle runs much smoother so I'm really leaning towards trying the spray as well and I already have it.
Tamper proof because the manufacturer doesn't want anyone but the dealership working on it.
Test
Ditch that mesh.
What's the point of the mesh
Why don't you just take it off ...
Gang busters ? 😂😂😂
I learned that from the streets... jk. Lol
You can take the screen off and reinstall it does only a clip holding it on
That's not your throttle body that's your MAF...
You did see me take the MAF out of the throttle body before cleaning the throttle body right? The MAF goes into the throttle body and should be removed from the throttle body before cleaning.
Can you use brake cleaner?
I don't suggest it.
Steve Phillips brake cleaner pops holes in rubber and plastic. Don’t want that anywhere but the brakes
I would not suggest it. Plus it won't do a thing about cleaning the throttle body.