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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1987MONTE CARLO LS, 4.3 ZREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCARBURETOR - ROCHESTER E4MC/E4MEDESCRIPTIONIDLE STOP SOLENOID (ISS)
1987 Chevrolet Monte Carlo LS, 4.3 Z
Idle Stop Solenoid (ISS)
1987 Chevrolet Monte Carlo LS, 4.3 ZSECTION Idle Stop Solenoid (ISS)
The solenoid is actuated by an ECM controlled relay for 2 operational modes:
- On A/C equipped vehicles, the idle stop solenoid is used to increase idle speed to compensate for A/C compressor load. When the climate control switch is moved to a position that turns on the A/C compressor, the ISS is energized and the plunger extends, to give a greater throttle opening, and maintain idle speed.
- On all applications, the solenoid plunger extends during certain deceleration modes for improved emission control. This action also occurs on A/C equipped vehicles, whether A/C switch is on or off. Specific adjustment procedure is included on the vehicle emission decal.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.