Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (5.7L ENGINE (SERVICE INFORMATION))DIAGNOSIS AND TESTINGPERFORMANCE
2014 Jeep Grand Cherokee Laredo, AWD
Diagnosis And Testing: Performance
2014 Jeep Grand Cherokee Laredo, AWDSECTION Performance
WARNING: This page is about a different variant/trim than selected.
| CONDITION | POSSIBLE CAUSE | CORRECTION |
|---|---|---|
| ENGINE WILL NOT START | 1. Weak battery. | 1. Charge or replace as necessary. |
| 2. Corroded or loose battery connections. | 2. Clean and tighten battery connections. Apply a coat of light mineral grease to the terminals. | |
| 3. Faulty starter. | 3. Refer to DIAGNOSIS AND TESTING . | |
| 4. Incorrect spark plug gap. | 4. Refer to SPECIFICATIONS . | |
| 5. Dirt or water in fuel system. | 5. Clean system and replace fuel filter. | |
| 6. Faulty fuel pump, relay or wiring. | 6. Refer to FUEL SYSTEM . | |
| ENGINE STALLS OR ROUGH IDLE | 1. Idle speed set to low. | 1. Refer to ENGINE - DIAGNOSIS AND TESTING . |
| 2. Vacuum leak. | 2. Inspect intake manifold and vacuum hoses, repair or replace as necessary. | |
| ENGINE LOSS OF POWER | 1. Dirty or incorrectly gapped spark plugs. | 1. Replace spark plugs. |
| 2. Dirt or water in fuel system. | 2. Clean system and replace fuel filter. | |
| 3. Blown cylinder head gasket. | 3. Replace cylinder head gasket. | |
| 4. Low compression. | 4. Refer to ENGINE - DIAGNOSIS AND TESTING . | |
| 5. Burned, warped or pitted valves. | 5. Replace as necessary. | |
| 6. Plugged or restricted exhaust system. | 6. Inspect and replace as necessary. |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.