I have a manual transmission 2005 Scion tC.
What my car is doing is during idle, every few seconds it wants to die. The RPM gauge will be at 750 rpm or so and go down a lil and it will act like it wants to die but doesn't. When I'm driving it does the same thing at lights. With the new exhaust i can hear the engine better and i hear it doing the idle thing i just described.
My gran says it's prolly the spark plugs and to just change them. The car has 63,000 miles on it. Was thinking about getting the 3M 3 step tune-up thing i saw on their website. I made an attempt at cleaning the throttle body but it's impossible to get my hand inside it and also wondered if i can just take it off and clean it from the other side. There is a net like grill in the first half of the throttle body so i could only insert like a long gadget in the part that opens. But taking it off and cleaning it would be ideal. What would i need to beware of if doing that? As far as i know only air travels through the throttle body. I could be wrong and am in most cases. lol