Question about 2005 Ford Freestar

1 Answer

How to replace engine coolant temp sender on 2005 Ford Freestar?

The temp gauge on my 2005 Ford Freestar fluctuates wildly at highway speeds. But when I look under the hood the engine does not seem to be overheating. I've already changed the thermostat and the same problem exists. So I will try to replace the temp sender, but I'm not sure how to access it. Has anyone done this before? If so please write down a brief step by step. (Did you have to remove the upper manifold or is there an easier way to access it? If you did have to remove, did you also have to get new ring seals or were you able to reuse)

Posted by on

  • Anonymous Mar 13, 2014

    Ford Freestar engine temp gauge reading low



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 112 Answers

Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader. also check instrument voltage stabilizer.

Posted on Jan 19, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Why is temp gauge fluctuating while driving car is not hot.

Check the coolant level. Sometimes when the coolant level is low, it will cause gauge fluctuations like you suggest, since air is getting into the cooling system. When air is in the system, it causes the thermostat to open and close frequently resulting is wild temp gauge swings.

Mar 12, 2015 | Cars & Trucks

1 Answer

Ford freestar temp gauge pegs red as soon as you start it.

try replaceing guage ,had simular problem with my P30 after guage replacement
problem went away .................

Jun 23, 2012 | 2005 Ford Freestar

1 Answer

Hey, I'm working on a 2004 Ford Freestar van with a coolant problem. There is no consistency, it happens at low and high speeds. While driving the temp gauge goes from its normal running position,...

do you have access to a good scanner (that reads engine parameters like engine temp?)-your gauge could be bad, you might have an intermittent problem with the cooling fan (connector?), your thermostat could be hanging open or closed, or you might have air in the cooling system.

Sep 05, 2011 | 2004 Ford Freestar

1 Answer

Why does my temp gauge fluctuate when i drive in town but stays level on the highway

When on the highway the wind blown through the grille naturally cools the rad coolant. While stuck in traffic the radiator fan will intermittantly cut in to prevent over heating, thus the fluctuations in the temp. gauge.

Aug 03, 2009 | 2001 Dodge Stratus

1 Answer

2001 dodge stratus engine temperature gauge spikes occasionally

Look for a loose connection to the temperature sender unit on the motor.
If all connections OK, you may need a new temp sender unit.

Jul 28, 2009 | 2002 Dodge Stratus

1 Answer

Freestar temp gauge moves erratically and enigne not overheating.

try the dealers and get a dealer fitter on the job

Jul 09, 2009 | 2005 Ford Freestar

1 Answer

Gauge reads Hot but truck doesn't appear to be overheating - help

is antifreeze dirty looking and if was changed was it chemically flushed?

Jul 06, 2009 | 2002 Nissan Frontier Crew Cab

1 Answer

How to replace engine coolant temp sender on a 4.2L 2005 Freestar

I am not a Ford guy but I am going to take a shot at this. The switch should be on the intake manifold around the front of the engine or in the front of the engine just below the intake where the radiator hose goes into the water pump. A few of the videos I researched for this answer showed the switch under the truck and screwed into the exhaust manifold but I do not believe yours is there but just in case the other two don't work look there. If all of this fails do a search on goggle for "Where is the temp sw located on a 2005 4.2 liter ford freestar." Hope this helps and I have not confused the issue.

May 06, 2017 | 2004 Ford Freestar

1 Answer


Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader.

Jul 29, 2008 | 1990 Ford F350

Not finding what you are looking for?
2005 Ford Freestar Logo

499 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

79186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

5681 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides