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 PERFORMANCESYSTEMEGR SYSTEMTESTINGSYSTEM FUNCTIONAL CHECK5.2L
1987 Chrysler Fifth Avenue 5.2 4
System Functional Check: 5.2L
1987 Chrysler Fifth Avenue 5.2 4SECTION 5.2L
- Warm engine to operating temperature, and let idle at least 2 minutes after warm-up in Park or Neutral. Disconnect hose at EGR valve and attach a vacuum gauge to the hose.
- Open the throttle quickly several times. A fluctuation of several in. Hg of vacuum should be observed during throttle movement. Disconnect vacuum gauge.
- Attach a hand vacuum pump, or other vacuum source to the EGR valve. With engine running apply vacuum to the valve. The engine speed should drop several hundred RPM, stumble or stall.
- Disconnect the vacuum source and reconnect the normal signal hose to the EGR valve. If the system operated as described, the system is operating correctly. If the system did not operate as described, see TROUBLE SHOOTING .
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.