Throttle Body Cleaning - Dirty Throttle Body Symptoms And Problems




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tigaspinoypower: Please help...My Honda Passport 96. while im driving and when stop sign i got high rpm and when i shut off my engine and counted 5 sec. and i start it went back to normal rpm and the following day same thing happen when im onthe freeway and then was so traffic and i drive slowly and my rpm went up. I just want to know if something to do with this with throttle body symptom? Thanks

brillopad6901: I just had my computer reflashed and my throttle body cleaned on my 2003 Toyota Camry and it drives better (it was dying at a dead stop) but it seems to chug when I get up on the gas, almost feels like one cylinder is misfiring but I get no check engine light codes. Could I have a leak in my intake? Should I replace the throttle body? I've taken it to 4 different mechanics and they can't figure it out.

Sayed Youssef: I have a 1998 infiniti i30. Do I have to take the throttle body out to clean it? is there any house hold products i can use to clean it? 

J. Wilson Perez: update 2... all is working good right now like a brandnew car.. idle is stable with aircon on and when in drive mode. no more idle stalling.. thanks very much.. godbless.. just one more minor problem. rear engine support was broken but it was an easy fix.. anyway thanks again.. :)

prince keem: Ok so my car always idle at 1100 I just replaced my iac valve this morning I cleaned the inside of the throttle body and plate and right when I started it up it idled where its supoose to be at 700 but den 30 mins later went back up to 1100 well I didn't notice a change in the way the engine souded still quiet and normal but the needle was back at 1100 rpm at idle should I replace my throttle position sensor also?would that help? already checked for leaks and seafoamed my car i have a complete tune up also

RentonReturns: hey i have a 94 buick century and when im at a stop light or turn it stalls, happen 3 times within 4minutes one day, any suggestion on whats the problem? 

Paul Mansfield: I get this problem on my Ford Maverick (2003 model) - 2L engine, sold in USA as the Ford Escape. Cleaning the throttle body solves a stalling problem where the engine won't idle if you stop for a short while and try and start the engine when hot. I am wondering if it's related to the exhaust recirculation valve reporting a fault.

Joe Mault: What do you use as a cleaner?

J. Wilson Perez: update.. my car is now idling smoothly with aircon on. but still stall a little bit when in drive mode. by the way i replaced all the hoses in egr valve which helps a lot in idling smoothly.

Rahman Kodiyil: i have got a strange issue with my Toyota corolla 2011 (auto transmission GCC specification 1.8 ) i see a surge in RPM when getting to complete stop (AC is on )and i feel the push of the car, as if it wants to accelerate and gets to complete stop. I notice this more when i drive in slow moving traffic where i have to accelerate a bit a then stop. The push or the jerking is more when i drive in D3 or D2 . i have cleaned the IAC and throttle body, replaced my brake pads but still has the same issue. i don't feel much issue when the Ac is off , well there must be a bit but cant notice it nor the RPM jumps or surge. kindly help me way out of it.

brittany p: can a throttle body stop your car from turning on? i have a dodge magnum and she wont start. and if she does i have to hold my foot on the gas to keep it on and as soon as i let go she turns off and it sounds really rough if she turns on

J. Wilson Perez: yes i adjusted the biss screw to compensate the idle issuues when in drive mode and Ac on. do i need to check the Ecu?

J. Wilson Perez: i tried it already cleaning the throttle body and replacing the idle stepper motor with a working one. it idle normally when in neutral/park mode. but when in drive mode it stall and when the aC is on..

Marcus N: Why the hell would 14 people not like this ? "Oh god damn I hate a clean throttle body.!! .grrrrrrrr "

Silver Fox: 2008 mazda 3 auto. My car makes this loud humming/ buzzing, like a moose at night sound when accelerating. It mostly does it with AC on but can happen with no Ac. The noise increases with the gas pedal but would die down after about 7 seconds. Any idea? 

Otto Soldiers: Please help mu toyota avensis 2003 auto shakes or vibrate while on idle and revvs itsself up nd downs, hen i stop at the red light or when driving at a traifc it start shaking then later the check engine light comes on, it is even worse when am doing reversing it shakes like hell no but when on motion everything seems normal, what culd be the problem? 

Kadeem duparl: OK so I have a 2010 mercury Milan and it's stalling and the check engine light comes on, the rpm gauge also is jumping like crazy, do you think that could be a the throttle body needing cleaning?? 

J. Wilson Perez: hi i have a 1992 6g galant automatic transmission. we recently overhauled it so i know.that the engine is having a high compression. the problem is when the car is in Park/neutral mode it idle normally but when i put in into Drive mode its suddenly stall from 900 rpm down to 600 rpm and goes down to 500 when i turn on the a/c.. thanks in advance for your help.. godbless

Joe Lewis: I have a 2000 lincoln navigator when I turn the AC on my car will start to shut off but if the AC is off my car run good

Andy D: Hi, I'm just cleaning my TB now on my Ford150. Should I put silicone on the gasket or TB to make sure it seals properly?

VroomVT: My 1996 nissan 200sx idles weird but only when warm, and when going down the road. If im engine braking, or lightly pressing on the gas, it will jerk. Could this be my throttle body?

Christine Kewallal: can I just say how much I appreciate the time you took in your about section explaining the situation? 1 minute into reading through the description and watching the vid, and I'm keeling over at how my situation mirrors this. I'm going to find the cleaner today. Thanks again from Toronto!

Penfold8: I have heard that you shouldn't mess with the butterfly valve because that will send the computer into a learning mode and will take a while before the vehicle starts to behave again. Is that true?

David Johnson: I replaced a throttle body on jeep commander but engine is still on should I clean that rubber casket also

Voloria Hooker: +Garrett Staats did the cleaning help? I have the same car and seems like the same problem too!

Augustine Lopez: My minivan has these problems; very rough idling, exhaust smell and poor fuel economy. I'm wondering if this will solve those issues and what kind of cleaner are you using with that brush?

Voloria Hooker: My RPM is off the charts on my 2004 Cadillac CTS. When I start my car the rpm shoots up to 4 & then will go up & down...The fluctuating RPM and the surge and die thing at stoplights.... Going to try it tomorrow. Just a tip, though. I was told by the dealership that I need to replace the throttle body gasket & connector. Will the cleaning really help that much or is it more precautionary?

Garrett Staats: Holy crap. This exactly what I have been looking for. I bought some MAF sensor cleaner and it helped a little bit, but I think this is my problem. The fluctuating RPM and the surge and die thing at stoplights.... Going to try it tomorrow. Just a tip, though. If you run a K&N air filter, you might have to clean the MAF every few thousand miles. Kind of makes me wonder about the K&N filters.....

davidbdoucette: On a side note, I do believe you had a hitchiker on board. Look in the lower right hand corner of the video for the first 30 seconds and you'll see him hanging on for dear life, legs dangling. :-) May not be responsible for your rough idling, and it is almost 2 years later now, but you may want to check for nests.

derrell lee: +TrustMyMechanic.com ive cleaned my throttle body a couple of months ago and the rpms kept going up and down after cleaning , after awhile it went to normal , few months down the line my idle issue is returning , is there a certain procedure that you have to do so it wont do this 

Missy Jane Music: My car used to always have a low rpm, 20 max when accelerating to get on the freeway or pass a car. Now the rpm hovers at a minimum of 5 rpm, even when at 0 mph. It ramps up to 20 rpm when doing basic accelerating or street driving. Could a dirty throttle be the cause or should I be worried about the transmission? Thank you! 

Luke Moore: i prefer to remove the throttle body when i do this so alot of that junk doesnt run into the engine, is this a good practice?

LCCharlie: I was surprised that you used a steel brush on an aluminum throttle body; I would have stuck with nylon or plastic.

TrustMyMechanic.com: Yes it can if the throttle body is really gummed up with carbon. Also a bad throttle cable can cause it as well. I would clean the throttle body first and see what happens...it should be part of routine maintenance anyway.

TrustMyMechanic.com: Yes it is a profitable job for the shop, but most...if not all customers will not or do not feel comfortable doing it themselves. Using cheap gasoline, and just the nature of come vehicles cause dirty throttle bodies more than others. Ford seems to be the worst when it comes to needing to clean. Yep, good comment on the brake leak. If the fluid is low either the brake pads are worn out causing too much fluid to remain in the caliper or there is a leak.

TrustMyMechanic.com: Yes it could be and if you were in my shop it would be the first thing I would look at...then I would check for a vacuum leak under the hood somewhere. With the engine running, open the hood and listen for a hissing type sound usually around the air cleaner fresh air duct work going to the air filter/cleaner case.

TrustMyMechanic.com: Did I reply to your question???? If not, sorry, Yes, start by cleaning the throttle body first, then if you still have a problem I would look under the hood and listen for a vacuum leak (hissing noise) if you still have an issue. Also make sure the "base idle speed" is set correctly.

TrustMyMechanic.com: Check the automatic transmission fluid, if low fill it up and check for a leak. If it is full, then you have excessive internal wear inside the transmission. If this is a standard shift, probably due for a new clutch.

TrustMyMechanic.com: Yes, I would start with cleaning the throttle body and see what happens. Also make sure there are no vacuum leaks from any rubber hoses or hose connections. You can sometimes hear a hissing noise under the hood with the engine running if you have a vacuum leak somewhere.

Mabelle Montina: This is really helpful, thank you.

jeannie baker: Many years ago my 1968 Malibu would not start...The maintaince man at this business came out...seen what my problem may have been. He left and returned with a can of cola and and dripped it on my battery cable connections... I've been a believer of this ever since. Too bad I didn't view this first...my vehicle goes in for a throttle body cleaning tomorrow. Least wise they will stand by on their word for the job. My vehicle is getting only 135 miles per tank full!

superchunkwii: Thanks for the video! However, you're holding your phone wrong. Needs be horizontal when using as a camera, not vertical. Your TV is horizontal right?

DGJunkie1: I got a code on the #3 cylinder today for ignition problem. Thought it might be the coil but I checked the plug first. The plug was only held in place by two threads. Easy fix. I'm still gonna clean my throttle body and replace coils and plugs soon. Almost 100k miles time for it anyways.

TrustMyMechanic.com: No I dont think so. If the engine speeds up (RPM goes up) but the vehicle does not move then I would suspect an internal transmission problem or a linkage problem not engaging the transmission. If transmission fluid is full, then there is not much you can do except pull the transmission out, or remove the transmission drain pan for inspection.

TrustMyMechanic.com: I think cleaning the throttle body would be a good place to start, also check to see if you have a vacuum leak somewhere under the hood...any rubber vacuum hoses broken or unplugged? Sometimes you can hear a hissing noise under the hood with the engine running in park.Your mechanic should also check the PCV system, I have seen these cars get plugged up with oil sludge causing idle and running issues.

WHINEUP1: Could a dirty throttle body cause the gas pedal to feel stiff, or make takeoffs jerk forward when pressing down on the accelerator pedal ?

Marilyn Gines: i have a 99 ford escort and it keeps on turning off while driving it. i put it on P and turn it back on and it keeps going but it does the same thing. we put in the diagnostic scanner and it read the the IAC valve needed to be changed. we changed it and it still turns off. are there any other parts that may cause the car to turn off? i would appreciate your help thank you!

MsCerise007: I tried to put my car in reverse & I did but it wouldn't back up it rolled down the drive.I put it in drive & it would not go forward.The fan belt is fine so I checked oil, transmission fluid, and power steering fluid & they were all full.Car starts fine just won't go forward or backward.I have not had transmission problems or any problems at all. What do you think is going on? I have a 1993 Ford Tempo.

juicy9600: please respond back. when driving sometimes my car will jump/lunge forward then in park the car wll idle high up to 3k rpm once I was driving and it completely cut off kia told me they couldn't find a problem took it to another mechanic same thing told me my car has to be idling high when I bring it in ive google my car symptoms and come across it could be 1. throttle body or failing idle air control 2. throttle position sensor 3. vacuum line going to the valve cover has a leak

TrustMyMechanic.com: It could be a vacuum leak, or could be a problem with an injector or the fuel pressure regulator. A bad injector or completely clogged injector can cause a miss (although I rarely see bad injectors anymore) or a leaking or bad fuel pressure regulator can cause lack of fuel pressure which can feel like a miss sometimes. Last thing, I would do a compression test on all cylinders to make sure one cylinder is not damaged or weak compression.
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Throttle Body Cleaning - Dirty Throttle Body Symptoms and Problems