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bighaas79 · 01-11-2009, 04:38 PM

When you clean your throttlebody are you removing it from the plenum or just spraying it down with it still attached? It might not hurt to pull the throttle body off the plenum and thoroughly clean it from the backside as well. You should be able to clean out the iac passage this way too. Just 3 little bolts/studs, and the 2 little coolant lines and its off.

01-11-2009, 04:38 PM	#2
bighaas79 Registered User Join Date: Nov 2008 Location: manly iowa Posts: 390	Re: 99 Silverado Rough Start When you clean your throttlebody are you removing it from the plenum or just spraying it down with it still attached? It might not hurt to pull the throttle body off the plenum and thoroughly clean it from the backside as well. You should be able to clean out the iac passage this way too. Just 3 little bolts/studs, and the 2 little coolant lines and its off.