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 MANUALSDODGE1987SHADOW L4-135 2.2L SOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSTESTING AND INSPECTIONCHARGE TEMPERATURE SWITCH (CTS) TEST
1987 Dodge Shadow L4-135 2.2L SOHC Turbo
Charge Temperature Switch (CTS) Test
1987 Dodge Shadow L4-135 2.2L SOHC TurboSECTION Charge Temperature Switch (CTS) Test
1. No EGR operation with engine warm:
a. Check hose routing and EGR solenoid operation.
b. Remove center connector from CTS and wait 90 seconds.
c. If EGR operation now resumes, replace CTS.
2. EGR operation with engine cold:
a. Check hose routing and EGR solenoid operation.
b. Remove center connector from CTS and check for 10 ohms resistance between center terminal of CTS and ground.
c. If ohmmeter indicates an open circuit, replace CTS.
d. If ohmmeter does not indicate an open circuited CTS, check for open circuit in the CTS to engine ground wire. When replacing CTS switch, do not torque more than 60 inch lbs. Over torquing will break off the nylon threads in the intake manifold.
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.