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1987
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Horizon Standard
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EGR System
EGR System
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Description
Operation
Notes
Ported Vacuum Control System
2.2L, 2.5L
Coolant Vacuum Switch
2.2L, 2.5L
Testing
System Functional Check
2.2L & 2.5L Engines (Except Turbo)
2.2L Turbo Engine
Coolant Vacuum Switch
Servicing
EGR Valve
Trouble Shooting
Notes
CARBURETED Engines
EGR Valve Stem Does Not Move On System Test
EGR Valve Stem Does Not Move On System Test, But Operates Normally On External Vacuum Source
Engine Will Not Idle, Dies On Return To Idle Or Idle Is Very Rough Or Slow
EFI Engines
EGR Valve Stem Does Not Move On System Test
EGR Valve Stem Does Not Move On System Test, But Operates Normally On External Vacuum Source
Engine Will Not Idle, Dies Out On Return To Idle Or Idle Is Very Rough Or Slow