Lh Front Upper Heated Exhaust Gas Oxygen (Hego) Sensor-Renew - Aston Martin V8 Vantage Workshop Manual

Engine Management System (03.14)
Engine (03.00)
LH Front Upper Heated Exhaust Gas
Oxygen (HEGO) Sensor-Renew
Repair Operation Time (ROT)
Item
Front Upper Heated Exhaust Gas
Oxygen (HEGO) Sensor-Renew
Removal
1. Raise vehicle on ramp.
2. Remove rear exhaust silencer (see Workshop Manual
procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access & Refit).
3. Disconnect multiplugs (x2), HEGO sensors.
4. Secure sufficient lengths of string to HEGO sensor
multiplugs for assembly purposes.
5. Loosen LH and RH clamp nuts, catalysts to centre pipes.
6. With assistance, manoeuvre exhaust centre pipe
assembly rearwards to release from catalysts.
7. Remove nuts (x3), catalyst to exhaust manifold.
8. Release and support weight of LH catalyst from exhaust
manifold.
9. Manoeuvre HEGO sensor leads and remove cable tie.
Release HEGO sensor leads from behind heat shield.
Remove string from HEGO multiplugs.
10. Remove catalyst assembly.
11. Remove and discard gasket.
12. Remove HEGO sensors from catalyst.
Installation
1. Clean catalyst, mating joint faces and HEGO sensors.
2. Install and tighten HEGO sensor to catalyst.
3. Apply proprietary exhaust sealant around clamp joints.
4. Install new gasket to exhaust manifold.
5. Position catalyst, secure string (x2) to HEGO multiplugs,
feed sensor leads behind heat shield. Install catalyst to
exhaust manifold.
6. Instal land tighten nuts (x3), catalyst to exhaust manifold.
7. Align centre pipe assembly to catalyst, tighten clamp
nuts to.
8. Remove string (x2), connect multiplugs (x2), HEGO
sensors.
9. Install rear exhaust silencer (see Workshop Manual
procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access & Refit).
10. Lower vehicle on ramp.
3-15-2
RH Front Upper Heated Exhaust Gas
Oxygen (HEGO) Sensor-Renew
Repair Operation Time (ROT)
Code
Item
LH 03.14.EB
Front Upper Heated Exhaust Gas
Oxygen (HEGO) Sensor-Renew
Removal
1. Raise vehicle on ramp.
2. Remove rear exhaust silencer (see Workshop Manual
procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access & Refit).
3. Disconnect multiplugs (x2), HEGO sensors.
4. Secure sufficient lengths of string to HEGO sensor
multiplugs for assembly purposes.
5. Loosen LH and RH clamp nuts, catalysts to centre pipes.
6. With assistance, manoeuvre exhaust centre pipe
assembly rearwards to release from catalysts.
7. Remove nuts (x3), catalyst to exhaust manifold.
8. Release and support weight of LH catalyst from exhaust
manifold.
9. Manoeuvre HEGO sensor leads and remove cable tie.
Release HEGO sensor leads from behind heat shield.
Remove string from HEGO multiplugs.
10. Remove catalyst assembly.
11. Remove and discard gasket.
12. Remove HEGO sensors from catalyst.
Installation
1. Clean catalyst, mating joint faces and HEGO sensors.
2. Install and tighten HEGO sensor to catalyst.
3. Apply proprietary exhaust sealant around clamp joints.
4. Install new gasket to exhaust manifold.
5. Position catalyst, secure string (x2) to HEGO multiplugs,
feed sensor leads behind heat shield. Install catalyst to
exhaust manifold.
6. Instal land tighten nuts (x3), catalyst to exhaust manifold.
7. Align centre pipe assembly to catalyst, tighten clamp
nuts to.
8. Remove string (x2), connect multiplugs (x2), HEGO
sensors.
9. Install rear exhaust silencer (see Workshop Manual
procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access & Refit).
10. Lower vehicle on ramp.
Workshop Manual
Code
RH 03.14.GB
October 2005