throttle body?
 

today my 89 ranger 2.3 started acting funny, once it warmed up, the idle never kicked down (from 900 to 550) like it always does and should. Is this a dirty throttle butterfly? It finally started running right, but I still want to figure this out.

thanks

Check/clean TPS
And check/clean idle air controller

Brad.



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Brad
88lx 2.3T soon to have 350hp
www.turboford.org