Ford Focus Forum, Ford Focus ST Forum - View Single Post - Duratec coolant sensor replaced, now acting weird
View Single Post
Old 12-07-2012, 10:50 PM   #2
Focus Fanatic
elsolo's Avatar
Join Date: Mar 2012
Fan#: 96835
Location: Long Beach, CA
What I Drive: 2003 dark shadow grey metallic ZX3

Posts: 2,172
FF Reputation: 17 elsolo Great Standing Member
Buy-Sell-Trade Rating: (1)
The hoses heat up, the thermostat is not stuck closed then.
It could be stuck open, your engine will get up to normal operating temperature if the car is sitting still or low speeds.

Get driving down the highway and you get airflow through the radiator, the coolant gets below normal operating temperature and the computer does the hanging revs because IT IS warming up.
elsolo is offline  
    Reply With Quote