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 MANUALSCHRYSLER1987FIFTH AVENUE 5.2 4REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMEFC SYSTEMTESTINGCOLD DRIVEABILITY TEST 14
1987 Chrysler Fifth Avenue 5.2 4
Cold DRIVEABILITY Test 14
1987 Chrysler Fifth Avenue 5.2 4SECTION Cold DRIVEABILITY Test 14
At this point, test procedures have determined that all engine control systems are operating correctly and are not the cause of the driveability problem. Check the following as possible causes:
- Check for at least 13 in. Hg engine vacuum in Neutral.
- Check engine valve timing.
- Check engine compression.
- Check engine cooling system.
- Check exhaust system for restrictions.
- Check engine PCV system for free flow.
- Check intake manifold heat crossover for plugging.
- Check fuel pump pressure, volume and vacuum.
- Check torque converter stall speed.
- Check power brake booster for internal vacuum leaks.
- Check for fuel contamination.
- Check carburetor for circuit contamination and proper calibration.
- Check Technical Service Bulletins that may apply to vehicle.
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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.