Fault Code 17-1986

Synopsis

Notes: For 1986 models only

Description: Engine stays cold too long
Power loss light: Off
Limp-in mode: None

Possible Causes

Thermostat stuck open - Replace the thermostat. This is usually accompanied by poor heater performance. The thermostat is located inside the water box behind the housing where the raditaor hose connects. Be sure to get a new gasket.

Coolant temperature sensor failure - The sensor should measure 9,120 ohms to 10,880 ohms at 77^F. May be accompanied by a fault code 22, also. On 2.2L and 2.5L engines, this sensor is located on the right-hand side of the water box.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module. Clean and regrease any corroded connectors with dielectric grease. You may have disconnected the sensor if you recently set the base ignition timing.

Diagnostic Method

Trigger Parameters

- Sensor indicates temperature -20^F to 212^F at startup
- 20 minute timer has expired
- Coolant temperature is below 160^F

Results If Component Fails

Fault code 17 is stored.

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This page is maintained by Russell W. Knize and was last updated 08/28/98. Comments? Questions? Send email.