Daytona Shelby Z L4-135 2.2L SOHC Turbo VIN E FI (1988)
Temperature Sensor (Gauge): Testing and Inspection
Oil & Temperature Sending Units Test
Gauge failures are often caused by defective wiring or grounds. The first step in locating trouble should be a thorough inspection of all wiring,
terminals and printed circuits. If wiring is secured by clamps, check to see whether the insulation has been severed thereby grounding the wire. In the
case of a fuel gauge installation, rust may cause failure by corrosion at the ground connection of the tank unit.
1.
Test dash gauge and voltage regulator as outlined above.
2.
If system is satisfactory, start engine and allow it to reach operating temperature.
3.
If no reading is indicated on the gauge, check the sending unit to gauge wire by removing the wire from the sending unit and momentarily ground
this wire to a clean, unpainted portion of the engine.
4.
If the gauge still does not indicate, wire is defective. Repair or replace wire.
5.
If grounding the new or repaired wire causes the dash gauge to indicate, the sending unit is faulty.
