Ford Escort Quiz
Central (single-point) Fuel Injection (CFI) system

Knock sensor - removal and refitting

In this manual: Central (single-point) Fuel Injection (CFI) system
Routine maintenance and servicing — 39OHV and HCS engines — 18CVH engines — 18Cooling, heating and ventilation systems — 15Carburettor fuel system — 19Bosch K-Jetronic and KE-Jetronic mechanical fuel injection systems — 25Central (single-point) Fuel Injection (CFI) system — 22Electronic Fuel Injection (EFI) system — 21Manifolds, exhaust and emission control systems — 9Starting and charging systems — 12Ignition systems — 9Braking system — 25Suspension and steering — 29Bodywork and fittings — 35Electrical system — 26Wirind diagrams — 13Reference — 6
~1min read

Removal
1 The knock sensor is screwed into the cylinder block, near the oil filter (see illustration).

15.1 Knock sensor location - 1.4 CFI engine
15.1 Knock sensor location - 1.4 CFI engine

A Knock sensor
B Wiring plug
C Securing bolt

2 Disconnect the battery negative lead. 3 Disconnect the sensor wiring plug by depressing the plug locking lugs and pulling the plug from the sensor. Do not pull on the wiring. 4 Unscrew the securing bolt and withdraw the sensor from the cylinder block.

Refitting
5 Refitting is a reversal of removal, but ensure that the mating faces of the sensor and cylinder block are clean.

Test yourself

A quick Ford Escort quiz: every answer comes with an explanation and a link to the manual page.