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.
Engine Will Not Start
2004 Acura 3.5RLSECTION Engine Will Not Start
WARNING: This page is about a different car, the 2001 Acura MDX, 2001 Acura Integra, 2001 Acura 3.5RL, 2001 Acura 3.2TL, and 2001 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
Ensure steps for spark and fuel testing in BASIC DIAGNOSTIC PROCEDURES article have been performed.
- Check ignition system. See BASIC DIAGNOSTIC PROCEDURES article.
- Check fuel pressure. See BASIC DIAGNOSTIC PROCEDURES article.
- Check fuel pump (PGM-FI) relay. See BASIC DIAGNOSTIC PROCEDURES article.
- Check CKP/TDC/CYP sensor (if equipped). See DTC P0335, P0336, P1336, P1337, P1361, P1362, P1366, P1367, P1381 or P1382 in appropriate SELF-DIAGNOSTICS article.
- Check for contaminated fuel.
- Check A/T gear position signal. See SYSTEM & COMPONENT TESTING article.
- Test PCM power and ground circuits. See POWER DISTRIBUTION and GROUND DISTRIBUTION article, in WIRING DIAGRAMS.
- Other possible causes are engine compression, intake air system leakage, engine locked up, timing belt, starting system, overheating and battery. On all models except Integra, engine will not start if PCM has been replaced and immobilizer code has not been rewritten to it using a Honda PGM tester.
RENDER: 1.0x
NO RELATED
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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.