If throttle body deposits are interfering with the movement of the throttle plate there can be related problems and such problems are fixed if the deposits are removed. And note that deposits interfere with the throttle plate when it is mostly closed or at idle. More of a problem when engine is warm as the throttle plate is more open for a cold engine. Do search and read. NEVER spray cleaner in the TB as it will pool in the manifold and there have been reports of severe problems getting the system to run after that.
Grab TB or feed pipe at the TB and try to move things. Rarely, we see a loose TB or manifold. Things should be rock solid.
Check condition of VAC lines. They can be cracked or split. But be careful as you can damage them. Be careful with plastic fittings that the hoses attach to. Some can be very brittle.
posted by 68.91.152...
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