The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
A defective thermostat can cause the engine to overheat. It can also cause the engine to not reach full operating temperature if the thermostat is stuck open. It is possible this could set the check engine light.
On a 2007 Ford Freestyle : The 3.0 liter DOHC " Duratec " V6 engine has ( 2 timing CHAINS ) * * ( 1 timing chain to each cylinder head )
The 3.0 liter " Duratec " V6 engine in a 2007 Ford Freestyle has : ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
On a 2007 Ford Freestyle : The 3.0 liter DURATEC V6 engine has ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS ) * no timing BELT
In a 2007 Ford Freestyle , with the 3.0 liter DOHC " Duratec " V6 engine : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
Can be many things. Have the ECU scanned.
The problem to your 2007 tour glide check engine could be tensioners.
The 3.0 litre " Duratec " Dual Over Head Cam , V6 engine in a 2007 Ford Freestyle has ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
Have vehicle scanned to determine problem
You use a scan tool after repairing the cause of the code.
I was looking at the 2005 / 2006 / 2007 Ford Freestyle Owner Guides : With engine oil filter change : The 3.0 liter " Duratec " V6 engine takes : ( 6.0 U.S. quarts of 5W-20 )