Iv'e had a bored out throttle body on my TJ for a long time. It used to never make any noise but recently it (or at least I think its the TB) is making a very high pitched squealing noise when the gas pedal is pressed about half way. If I punch it, it squeals quickly then goes away but then I'll let off and when the pedal is halfway again it squeals. I cleaned the hell out of it in hopes to fix it but to no avail. It's actually getting louder, especially with the new Volant cold air I just installed. What's going on?!?
11-06-2011 09:38 AM
pretty common for incorrectly bored geometry on throttle bodies, cold air intakes and throttle body spacers. IIRC, its caused by turbulence around one specific lip of one of the sensor ports.