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Oh for crying out loud.
How people take a simple thing and turn it into a life or death struggle.
It's not rocket science folks.
Take it off, gently push it open ad wipe it clean.
It's really NBD.
Lose a finger?
LOLZ
It's just an FYI.
Previous posts are talking about using a stick or having someone floor the pedal in the "on" position. If either slips and your finger is in the path of the throttle butterfly, your finger will be in the way.
From the referenced site: WARNING: Do not do this while the throttle body is on the vehicle. An electronic throttle body is built with a powerful motor and a gear reduction set that’s strong enough to cut off your fingers. If you force the throttle plate open while the unit is on the vehicle, it will try to close and may cause injury.
Oh for crying out loud.
How people take a simple thing and turn it into a life or death struggle.
It's not rocket science folks.
Take it off, gently push it open ad wipe it clean.
It's really NBD.
Lose a finger?
LOLZ
Doing an oil change is a relatively simple process. Jack the car, drain old oil, replace filter, refill, done, right? Yet, oil plugs get over tightened or cross threaded (even when a professional does it), double gasketed filters, and over/underfilled oil level. Sometimes incorrect jacking points are used and body damage results. If there's a way to screw something up, someone will find a way.
Thanks for the DIY write up. Just did this successfully yesterday. At 73k miles the inside of the TBs were absolutely filthy with black gunk. The primary reason I did this was because the engine RPMs were constantly dipping at idle. It was getting so bad the engine would almost completely cut out at stoplights.
Happy to say after cleaning the TBs and doing an both an ECU reset + idle air relearning procedure, I can report that the car (6MT sedan) now idles rock solid at ~650rpm. No engine check lights or anything.
- No, I did not disconnect the battery.
- No, I did not remove any hoses nor electrical harnesses going into the TB.
- Yes, I did move the butterfly valves. I gently nudged them open in order to spray TB cleaner and wipe the seam between the valve and the TB housing. For an effective cleaning, you have to move the valve. Pretty much no way around it. This is where most of the air passes through when the valve is at idle/closed position.
FYI I replaced both o-ring throttle body gaskets (part number is 16175JK21A) even though they still looked fine upon removal. I also tightened the throttle body bolts in X-pattern to seat it properly. An improper seal here may result in idle surging and/or lean ignition.
So, just installed a new K&N CAI on my 2012 Coupe and decided I needed to clean my TB's at the same time. All went exactly to plan thanks to this nice DIY. I've had the car since 12/2015.. bought it with 30k miles, has 38.5k now. TB's were a little dirty but most noticeable is that the throttle feels a bit smoother. I don't think mine were a problem yet but likely that idle issues were coming. I reset the ECU (thanks to another DYI on this site) and car seems to be pulling VERY strong.
Pass side before
Pass side after
Driver's side before
K&N Cold Air Intake Install
Last edited by bryang37; Oct 11, 2016 at 03:19 PM.
Did this today. Had a moderate amount of oily junk at 22k miles.
Did not disconnect the battery. removed the intake hoses and the TB but did not disconnect any other hoses.
Pushed open the butterfly valve with my finger and cleaned it from both sides.
No idle relearn procedure was done and the car idles around 600rpm. Absolutely no issues faced, simple diy and a must do especially on the higher mileage cars
Hey everyone! I just bought a 2008g37s and I am having issues with the car starting up and shuts off right away. After 5 attempts to start the car the sixth time I gave the car a little gas and the car started right up. Will cleaning the the throttle body also help with this problem?
I recently cleaned my throttle bodies and couldn't help but notice the spring sound coming from both the Left and Right TB, when moving them around or tapping on them. Is the spring noise/rattle supposed to be audible or am I dealing with something that needs to be addressed?
Cleaned mine today, no battery disconnect and moved butterfly to clean. On initial start up it has a quick rpm jump (higher than normal) and settled back down without issue. Second start was normal.
Can someone confirm if the hose is push in all the way the next time you do a throttle body clean or remove the engine cover? if not, can you take pic of how yours is like?
it is the hose that goes from the back of the engine to the passenger side throttle.
Anyone by any chance have a link where to buy new o-rings for the throttle body? I plan on doing this DIY this week and would like to change my current o-rings but can't seem to find them anywhere and would really like to refrain from going to the dealer for a set.
I actually found the part number and part on a vendor website of ours. For those who had the same question as me the part # 16175-JK21A and you can purchase it off the czp website!
