Idle Problems & Stalling
1. Incorrectly adjusted curb idle speed.
2. Incorrectly installed EGR valve.
3. Carburetor flooded.
4. Worn or damaged idle mixture adjusting screw.
5. Restricted idle port.
6. Restricted main jet.
7. Defective idle compensator valve.
8. Worn or damaged intake manifold gasket or carburetor insulator seal.
9. Damaged throttle valve.
10. Defective slow fuel cut solenoid valve.
11. Broken, worn or disconnect vacuum hose(s).