Question about 2004 Ford Freestar
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Posted on Jan 02, 2017
i will try to help. 171/174 indicates lean condition in engine. the mass air flow sensor is located in the rubber tube going to throttlebody. you can try to clean it. using mild carb cleaner safe for sensors, remove sensor from tube. spray clean the tiny wires located in the cylinder. do not touch them, they are very delicate. these engines are also notorious for leaking intake gaskets and faulty pcv valves. these will all set these 2 codes. feel free with anymore questions.
Posted on Nov 15, 2008
There is a great number of things that can cause this **** as an oxygen sensor. or charcole canister, gas cap,or even your catalatic converter you will have to have the car hooked up to a diagnostic computer to find the problem for sure.
hope i helped you
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Posted on Apr 21, 2009
I had the same problem and apparently fixed it by mistake. I replaced the cruise control deactivation switch under the master cylinder, hoping the cruise would be fixed. Some how with that the "trac off" light went out and gave me the ability to turn it on/off from the button again. The part was $30 from the local dealer and easy to replace. Before you run out to replace the switch check the connections on the old one. It plugs in upside down which may accumulate water from puddles and things causing connection issues ( a known problem ).
Posted on Sep 23, 2009
Not sure what you are asking for but here is some info about the Speedometer and Speed Control.
Speedometer Gauge The instrument cluster receives the vehicle speed signal from the ABS module over the SCP communication network and commands the speedometer with an appropriate pointer placement based upon the data received.
The cruise control also gets the signal from the same source. The transaxle has an input speed sensor and an output speed sensor. They are primarily for transmission shifting. Hope this helps. Please don't leave me a bad thumbs up, I am trying to help with the info you have provided. ... Cobra.. :-)
Posted on Jun 15, 2010
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