Chrysler Dodge Caravan 2002 Manual page 1279

9 - 78 ENGINE 3.3/3.8L
ENGINE 3.3/3.8L (Continued)
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - PERFORMANCE
CONDITION
ENGINE WILL NOT START
ENGINE STALLS OR IDLES
ROUGH
POSSIBLE CAUSE
1. Weak battery.
2. Corroded or loose battery
connections.
3. Faulty starter.
4. Faulty coil(s) or control unit.
5. Incorrect spark plug gap.
6. Contamination in fuel system.
7. Faulty fuel pump.
8. Incorrect engine timing.
1. Idle speed too low.
2. Incorrect fuel mixture.
3. Intake manifold leakage.
4. Faulty ignition coil(s).
CORRECTION
1. Test battery. Charge or replace
as necessary. (Refer to 8 -
ELECTRICAL/BATTERY SYSTEM -
DIAGNOSIS AND TESTING)
2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to terminals.
3. Test starting system. (Refer to 8 -
ELECTRICAL/STARTING -
DIAGNOSIS AND TESTING)
4. Test and replace as needed.
(Refer to Appropriate Diagnostic
Information)
5. Set gap. (Refer to 8 -
ELECTRICAL/IGNITION CONTROL
- SPECIFICATIONS)
6. Clean system and replace fuel
filter.
7. Test fuel pump and replace as
needed. (Refer to Appropriate
Diagnostic Information)
8. Check for a skipped timing
belt/chain.
1. Test minimum air flow. (Refer to
Appropriate Diagnostic Information)
2. (Refer to Appropriate Diagnostic
Information)
3. Inspect intake manifold, manifold
gasket, and vacuum hoses.
4. Test and replace as necessary.
(Refer to Appropriate Diagnostic
Information)
RS