So, like many other members on this board (I hope), I too take the time to remove each wheel when washing the car to be able to clean the inner plastic fenders, calipers, and springs. The temperature controls are set to 72 F, not because thats comfortable , but because it places the dials in the vertical position. The front passenger's seat has to be in line with the drivers, and so on...
Now that I have shared a little bit about my OCD, you should be able to understand why I took the time to clean all ten throttle bodies. It wasn't that the car needed it, as much as I needed to do it for the car. Hopefully this will aid others in accomplishing the same.
1) Remove air filter boxes (top and bottom), cabin air filters and trays, and remove hardware and electrical connector securing coolant expansion tank
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2) With a long flat head screwdriver, loosen the clamps that secure the air collector to the throttle housings (the clamps are secured so they will not spin).
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3) Remove the rubber spacer/holder at the front of the air collector
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4) Remove the plastic ignition coil cover (snaps off)
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5) Completely remove the large vent hose
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6) Step 5 will allow you access to disconnect the oil return hose from the valve cover
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7) Remove the rear and front vent hoses, and carefully remove the air collector
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8) Remove bolts that secure fuel rail and rear cover
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9) Carefully pull straight up on the fuel rail/injector assembly (note: there are two o-rings, top and bottom of each injector, make sure they do not become misplaced when removing the injectors from the throttle housings).
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10) Remove the pull rod from the operating lever
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11) With any and all 11mm wrenches, sockets, etc, remove the nuts at the bottom of each throttle housing (I used a 3/8" drive 11mm crow's foot on a 12" extension to reach some of the nuts.
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12) I also removed the injectors from the fuel rail to allow more room to work. You can see the difference once cleaned.
![Image]()
13) Remove each butterfly valve from within the throttle housing
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![Image]()
15) Using a soft brisseled brush and throttle body cleaner, I cleaned each housing and butterfly valve
![Image]()
![Image]()
Reassembly is the same in the opposite order. I used a little petroleum based jelly on the injector o-rings and air collector hoses to ease in the reinstallation process.
So, I have it all back together, check for leaks (fuel, air, oil) and go for a test drive.
I will comment that the throttle response is identical to before the cleaning, I feel no increase in horsepower, and my fuel consumption is the same. However, that is not why I cleaned them.
Diego
Now that I have shared a little bit about my OCD, you should be able to understand why I took the time to clean all ten throttle bodies. It wasn't that the car needed it, as much as I needed to do it for the car. Hopefully this will aid others in accomplishing the same.
1) Remove air filter boxes (top and bottom), cabin air filters and trays, and remove hardware and electrical connector securing coolant expansion tank
2) With a long flat head screwdriver, loosen the clamps that secure the air collector to the throttle housings (the clamps are secured so they will not spin).
3) Remove the rubber spacer/holder at the front of the air collector
4) Remove the plastic ignition coil cover (snaps off)
5) Completely remove the large vent hose
6) Step 5 will allow you access to disconnect the oil return hose from the valve cover
7) Remove the rear and front vent hoses, and carefully remove the air collector
8) Remove bolts that secure fuel rail and rear cover
9) Carefully pull straight up on the fuel rail/injector assembly (note: there are two o-rings, top and bottom of each injector, make sure they do not become misplaced when removing the injectors from the throttle housings).
10) Remove the pull rod from the operating lever
11) With any and all 11mm wrenches, sockets, etc, remove the nuts at the bottom of each throttle housing (I used a 3/8" drive 11mm crow's foot on a 12" extension to reach some of the nuts.
12) I also removed the injectors from the fuel rail to allow more room to work. You can see the difference once cleaned.
13) Remove each butterfly valve from within the throttle housing
15) Using a soft brisseled brush and throttle body cleaner, I cleaned each housing and butterfly valve
Reassembly is the same in the opposite order. I used a little petroleum based jelly on the injector o-rings and air collector hoses to ease in the reinstallation process.
So, I have it all back together, check for leaks (fuel, air, oil) and go for a test drive.
I will comment that the throttle response is identical to before the cleaning, I feel no increase in horsepower, and my fuel consumption is the same. However, that is not why I cleaned them.
Diego
