Where is my optical sensor at on my 2005 ford f150 5.4 3valve

check here...

https://www.google.com/search?q=2005+ford+mustang+overdrive+flashing&rlz=1C1CHBD_enUS885US885&oq=2005+ford+mustang+overdrive+flashing&aqs=chrome..69i57j0i22i30j0i390i650l2.6288j0j4&sourceid=chrome&ie=UTF-8

Visit the on-line site, known as
https://big-manuals.com/products/ford-freestyle-2005-2006-2007-workshop-service-manual
they have the best repair solu tions

first the sensors on the exhaust manifold or before the cat converters are heated oxygen sensors ( not O2 sensors but HO2S sensors)
there are O2 sensors after each cat converter before any muffler

You need to find out which oxygen sensor needs to be replaced, your vehicle could have 2 or 3. They are located in the exhaust system either in the exhaust manifold or the exhaust pipe before the catylitic converter and one after the catalytic converter. http://www.rockauto.com/en/catalog/ford,2005,freestar,3.9l+v6,1430707,exhaust+&+emission,oxygen+(o2)+sensor,5132 Where is the o2 sensor on 2005 ford freestar 3 9

Hi Rusty, There's two links below showing the position of 2005 Ford Explorer Crankshaft Position Sensor and the 2008 ford edge camshaft sensor location. It seems like they're all in the same position, I hope this helps.....CHEERS
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2005 Ford Explorer Crankshaft Position Sensor Location

2008 ford edge camshaft sensor location

2005-2007 Ford Five Hundred Speed Sensor - JC Whitney

www.jcwhitney.com/2005...ford-five-hundred/...speed-sensor...speed-se...
Shop for a 2005-2007 Ford Five Hundred OE Replacement Vehicle Speed Sensor by Motorcraft with a 30-day Satisfaction Guarantee at JC Whitney, America's ... images for 2005 Ford Five Hundred Where is the ...

o2 sensors are after the cat converters

hi,
It is not expensive to replace the ABS sensor in your car. It costs exactly $26.65. I have provided the picture and the link in which you can buy the product online.please rate my solution as helpful.

www.thefind.com/query.php?query=cost+of+abs+sensor+for+2005+ford+explorer

According to my book, it looks like a bad O2 sensor, the sensor behind the catalytic converter on the passenger side exhaust.

Bank 1, Sensor 2.

You can pick one up at the parts store for around $75.

for a Nissan Quest, it is in the distributor. Not serviceable, replace distributor. Famous for nearing failing and getting brown dust on optical sensor for camshaft sensor. buy on ebay for $200. Cleaning optical sensor is temp repair.

Call dealer & see if yours is there too.