LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Engine Controls - Tests W/Codes - 5.2L CNG) >> Self-Diagnostic Tests >> Test NTC-5A - Checking Coolant Sensor Calibration

Test NTC-5A - Checking Coolant Sensor Calibration

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine. Using scan tool, read coolant sensor value. If engine temperature is more than 180°F, allow engine to cool to 150°F. Observe scan tool and allow engine to reach normal operating temperature (more than 180°F). If coolant temperature value did not increase smoothly, check for mechanical cooling problems. Replace coolant sensor if mechanical cooling problems are not present. Perform TEST VER-2.
  2. If coolant temperature value increased smoothly, but did not increase to more than 180°F, check for mechanical cooling problems. Replace coolant sensor if mechanical cooling problems are not present. Perform TEST VER-2. If coolant temperature value increased smoothly to more than 180°F, coolant sensor is okay. Test is complete.
scientia non olet · About LEMON Manuals