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 MANUALSEAGLE1994SUMMIT WAGON AWD L4-1795CC 1.8L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEXHAUST GAS RECIRCULATIONSERVICE AND REPAIR
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHC
Exhaust Gas Recirculation: Service and Repair
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHCSECTION Service and Repair
EGR Control Valve Cleaning
CAUTION: Do not wash EGR valve in solvent or degreaser as permanent damage may result. Also, sand blasting of the valve is not recommended since this can affect the operation of the valve.
WARNING: To avoid possible injury to the eyes wear approved eye protection for this cleaning procedure.
Clean the control valve and passages as follows:
1. Disconnect vacuum hose from EGR valve then remove EGR valve-to-manifold retaining bolts and the control valve.
2. With a wire wheel remove any deposits from the mounting surface and around the valve.
3. Open the control valve with an external vacuum source and check for excessive carbon deposits (anything more than a thin film is excessive).
4. Scrape the carbon deposits from the control valve poppet being careful not to scratch the valve seat or dislodge the poppet from its stem.
5. Check the poppet valve and stem for wear. If it is worn the control valve must be replaced.
NOTE: Care should be taken when cleaning EGR valve and intake manifold EGR passages to ensure that all loose particles are completely removed, preventing them from clogging the EGR valve or being ingested into the engine.
6. Using a wire wheel remove all deposits from valve mounting surfaces.
7. Blow deposits from EGR ports and control passages using compressed air.
CAUTION: Do not use drills or wires to clean carburetor control passages as calibration may be altered and result in poor engine performance.
8. Install the EGR control valve with a new gasket.
9. Connect EGR vacuum hose
CAUTION: Do not wash EGR valve in solvent or degreaser as permanent damage may result. Also, sand blasting of the valve is not recommended since this can affect the operation of the valve.
WARNING: To avoid possible injury to the eyes wear approved eye protection for this cleaning procedure.
Clean the control valve and passages as follows:
1. Disconnect vacuum hose from EGR valve then remove EGR valve-to-manifold retaining bolts and the control valve.
2. With a wire wheel remove any deposits from the mounting surface and around the valve.
3. Open the control valve with an external vacuum source and check for excessive carbon deposits (anything more than a thin film is excessive).
4. Scrape the carbon deposits from the control valve poppet being careful not to scratch the valve seat or dislodge the poppet from its stem.
5. Check the poppet valve and stem for wear. If it is worn the control valve must be replaced.
NOTE: Care should be taken when cleaning EGR valve and intake manifold EGR passages to ensure that all loose particles are completely removed, preventing them from clogging the EGR valve or being ingested into the engine.
6. Using a wire wheel remove all deposits from valve mounting surfaces.
7. Blow deposits from EGR ports and control passages using compressed air.
CAUTION: Do not use drills or wires to clean carburetor control passages as calibration may be altered and result in poor engine performance.
8. Install the EGR control valve with a new gasket.
9. Connect EGR vacuum hose
RENDER: 1.0x
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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.