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e-Gas throttle body cleaning

GranburyChuck
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GranburyChuck Member

GranburyChuck

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I have searched and found DIY on how to clean a non-egas throttle body so I was wondering if anyone has done this on an egas car? I did this about 6 months ago by holding the throttle plate open and spraying cleaner down the TB and wiping with a clean lint free rag. I still have a slight stumble at idle so I was going to take the TB all the way off. I bought the rubber gasket (TB to manifold) and a gasket for the idle control valve (paper gasket). Has anyone removed that part and cleaned it?

Thanks in advance

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Orient Express Member

Orient Express

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Thanks Orient, saw that one, guess it is egas. Just wondering if anyone has taken it off and seen more of a difference.

For cleaning purposes they are exactly the same. What you are trying to do is to remove the gunk buildup at the edge of the backside of the butterfly, and around the bore of the throttle body.

The butterfly is not quite closed at idle, and that little gap is where the gunk builds up and causes the idle roughness.

This process is the one I use for all my fuel injected cars, and it works just fine regardless if the butterfly is operated electrically or by a cable to the gas pedal.

If this cleaning process does not cure your idle roughness, then taking the throttle body off the car to clean it (there really isn't anything else to clean except the butterfly and throttle bore) won't gain you anything. I would recommend that your next step is to look for loose or frayed vacuum lines, and then replace the plugs.

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GranburyChuck Member

GranburyChuck

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Diego, I had to use some force to open mine up first time I cleaned it. I was wondering if the idle control piece connected to the throttle body allows some air flow through it and it needs to be cleaned. I bought the gasket for both the TB and the idle control piece. I have already changed out the plugs about 20k miles ago.

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