Chirping sound coming from engine?

The noise is high pitched and vehicle is ford taurus.
In most cases the noise you are discribing is cuased by a failing camshaft position sensor synchronizer which is the drive gear for the camshaft position sensor . Its located right next to the thermostat housing on the intake and in most cases it will require replacing to resolve the noise.

The drive gear runs about $156 and the cam sensor run about $36.00 so about $180 in parts and about 1.5 hours in labor will resolve this.

This details will help.

Thanks.

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