Page text (OCR transcript)
TROUBLESHOOTING
Problem | Possible cause | Remedy | Page
Engine overheats | Cooling system problem | Troubleshoot cooling system | CO-1
| Incorrect ignition timing | Reset timing | IG-20
Engine will not crank or cranks slowly | Starting system faulty | Troubleshoot starting system | ST-2
Engine will not start/hard to start (cranks OK) | Vacuum leaks
• PCV hoses
• EGR valve
• Intake manifold
• Air intake chamber
• Throttle body
• ISC valve | Repair as necessary |
| Pulling in air between air flow meter and throttle body | Repair as necessary |
| Ignition problems
• Ignition coil
• Igniter
• (7M-GE)
Distributor
(7M-GTE)
Cam position sensor | Perform spark test | IG-5, 10
| High-tension cord disconnected or broken | Inspect cord | IG-6, 11
| No fuel supply to injector
• No fuel in tank
• Fuel pump not working
• Fuel filter clogged
• Fuel line clogged or leaking | Troubleshoot EFI system | FI-10
| EFI system problem | Repair as necessary |
| ISC system problem | Check ISC system | FI-106
| Spark plugs faulty | Inspect plugs | IG-7
| Low compression | Check compression | EM-20, 21
Rough idle, stalls or misses | Vacuum leaks
• PCV hoses
• EGR valve
• Intake manifold
• Air intake chamber
• Throttle body
• ISC valve | Repair as necessary |
| Pulling in air between air flow meter and throttle body | |
| Incorrect idle speed | Check ISC system | FI-106
| Incorrect ignition timing | Reset timing | IG-20
| Ignition problems
• Ignition coil
• Igniter
• (7M-GE)
Distributor
(7M-GTE)
Cam position sensor | Perform spark test | IG-5, 10
| High-tension cord faulty | Inspect cord | IG-6, 11
| EFI system problems | Repair as necessary |
