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 MANUALSPLYMOUTH1994LASER FWD L4-1997CC 2.0L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)DESCRIPTION AND OPERATIONCOOLANT TEMPERATURE SWITCH
1994 Plymouth Laser FWD L4-1997cc 2.0L DOHC
Coolant Temperature Switch
1994 Plymouth Laser FWD L4-1997cc 2.0L DOHCSECTION Coolant Temperature Switch
Coolant Temperature Switch Circuit (A/C Only):
The Coolant Temperature Switch, located in the thermostat housing, is a contact type switch. It is normally in the closed position allowing current flow. When the engine coolant temperature is 233 - 244° F (112 - 118° C) the switch will open cutting power to the ECM, and helping to prevent engine overheating.
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.