Need to know where the cylinder head temperature sensor is on a 2000 ford focus with a 2.0 zetec engine

It doesn't have a coolant sensor it has a CHT, cylinder head temperature sensor. This type of sensor is much more precise measuring engine operating temperature.

What engine does yours have ? 2.0l Zetec ? You need special tools !

I put your question into internet explorer & apparently
there are 2 engines in 2001 & 2001 that are interference

Seen the 2002 are the way to go if your buying one.

You can do a cylinder leak down test & there are some
nice cameras that go into small places that are for checking
things even inside your head thru the spark plug hole

Your not going to buy any of that,but can have those services
performed for piece of mind

A compression test is not really giving you the whole picture
that a cylinder leak down test would

Play around on You Tube & learn all you can

Most of the Focus the name of the item they call it cylinder head temperature sensorIts No.13 in the diagram

Automobiles: 2000 Ford Escort ZX2 4-cylinder 2.0L MFI DOHC

NOTE
The "left" side of the engine is the driver's side.

The Engine Coolant Temperature (ECT) sensor is a thermistor (a device which changes resistance or voltage as temperature changes). The sensor detects the temperature of engine coolant and provides a corresponding signal to the PCM (Powertrain Control Module - aka "the car's computer").

The ECT sensor is mounted in the following locations (small Ford engines):

1.8L engines: in the cylinder head
1.9L engines: threaded into the heater hose inlet pipe
2.0L engines: at the left rear of the engine

2.0L Zetec Engine

(1) Partially drain the engine cooling system using a clean container. If coolant is in good condition, retain for reuse.
(2) Disconnect the battery ground cable.
(3) Disconnect the electrical wiring connector from the engine coolant temperature (ECT) sensor.
(4) Remove the retaining clip and the ECT sensor.




Fig. 1 Escort ZX2 ECT sensor - The retaining clip is removed (at the solid arrow). Withdraw ECT sensor by gently wiggling/pulling in the direction of the dashed arrow.

To install:

NOTE
Coat the ECT sensor O-ring with clean coolant prior to installation.

(1) Replace the retaining clip and the ECT sensor.
(2) Connect the electrical wiring connector from the Engine Coolant Temperature (ECT) sensor.
(3) Connect the battery ground cable.
(4) Refill the engine cooling system. An inexpensive plastic "Radiator Funnel" will help with this task.

I had same problem. located above/behind the Right Front Tire. I didn't believe it either.

sounds to me like the thermostat is sticking and allowing the car to overheat. with the a/c on the fan comes on and runs constantly to keep the engine cool

it sounds like if attached to the exhaust a 02 sensor if not then it may go to a sensor to the transmission or it may be the engine temperature sensor

its screwed into the cylinder head ,when you fit a new 1 dont overtighten it they sense temp of the head they dont screw into the water jacket!!!!!!!!!!!!!!!!!!!!

please helpme i need timing marks for ford focus 2000 16 valvs