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 MANUALSCHEVROLET1986CHEVETTE L4-98 1.6LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEXHAUST GAS RECIRCULATIONEGR CONTROL SOLENOIDDESCRIPTION AND OPERATION
1986 Chevrolet Chevette L4-98 1.6L
EGR Control Solenoid: Description and Operation
1986 Chevrolet Chevette L4-98 1.6LSECTION Description and Operation
This switch is used on some V8-350 diesel engines. When vacuum at this switch is below 8 inches Hg, the switch's electrical contacts are normally closed. Regulated vacuum from the vacuum regulator valve is directed to the EGR-VS. When vacuum is above 8 inches Hg, the switch's electrical contacts close and complete the circuit to ground. The EGR vacuum solenoid valve is energized allowing unregulated vacuum from the vacuum pump to be directed through the EGR vacuum solenoid valve to the EGR valve.
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.