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v_dub_ya · 17 Feb 2008, 04:59 pm

On some of our old meter reading trucks (90-93) F150s the throttle body would get really gunked up which caused some rough idling. We used throttle body cleaner and put it on a rag and rubbed it inside the throttle body and on the butterfly and then, with the engine running, you can spray it directly into the throttle body.

Could also look towards the coolant temp sensor.

17 Feb 2008, 04:59 pm	#2 (permalink)
v_dub_ya Pulling the belts tight Join Date: Jan 2005 Location: Racing in an autocross event :) Posts: 10,608 v_dub_ya's Gallery	Re: Rough Cold Idle On some of our old meter reading trucks (90-93) F150s the throttle body would get really gunked up which caused some rough idling. We used throttle body cleaner and put it on a rag and rubbed it inside the throttle body and on the butterfly and then, with the engine running, you can spray it directly into the throttle body. Could also look towards the coolant temp sensor. __________________