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.
1989 Eagle Summit DL, AutomaticFACTORY OEM SERVICE PROCEDURE
EGR System (California)
- Disconnect vacuum hose (Green striped) from EGR 3-way vacuum connector. Connect a hand vacuum pump to valve nipple.
- With engine coolant temperature 140°F (60°C) or less, press the accelerator quickly and observe vacuum gauge. There should be no change in pressure (atmospheric pressure).
- With engine coolant temperature 158°F (70°C) or more, press the accelerator quickly and observe vacuum gauge. There should be a temporary rise in pressure to 3.9 in. Hg.
- Disconnect vacuum pump from 3-way connector and connect it directly to EGR valve vacuum nipple. Apply 5.9 in. Hg or more. Engine should stall or exhibit unstable idle condition.
Factory Service Tools
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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.
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