If you’re unsure how to identify the throttle body, have someone press the car’s accelerator (while the engine is off). The throttle shaft will shift noticeably since it’s connected to the gas pedal.
The battery looks like a large block with two cables attached. The negative terminal is black and marked by a “-” symbol.
Alternatively, you can also use specifically-designed labeling tape to mark each duct.
Some cars may have air ducts attached to either side of the throttle body, but removing one of them should be enough to expose the throttle for maintenance. In addition, some cars may have electrical wires attached to the throttle; take care not to detach any of those while you work. If you’re unable to remove the air ducts yourself, stop what you’re doing and take your car to a trained mechanic for throttle cleaning.
Continue to spray, scrub, and wipe the inside of the throttle body until all the metal is clean and bare. It’ll be easier to monitor your progress if you shine a flashlight inside the throttle body between scrubbing. [9] X Research source
Keep in mind that you don’t need a lot of oil to do this. One drop is plenty!
Your car has an unsteady idle, which drops when you come to a stop, and may even lead to an engine stall. Your car’s “Check Engine” light might turn on. You might have a hard time shifting while driving your car.
Clean off your tools and dispose of the paper towels and rubber gloves in the trash can. Keep in mind that the cleaner fluid is flammable, so you may want to wrap the paper towels in a bag and then throw them away.
Move all tools and materials out from under the hood of your car before reattaching the battery. To ensure you’re tightening clamps accurately, think about the force that went into loosening each clamp and apply roughly the same pressure as you tighten them back up. [13] X Research source
If either of these occurs, don’t panic. Your car will return to normal once the cleaner and residue burn away.
Even if your car doesn’t feel all that different, remember that cleaning the throttle body is supposed to be preventative. Your car will drive smoother in the long term!
