Quote:
Originally Posted by turbo69bird
So is this correct?
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Yep, I’ll break down the diagnosis,
1. Ignition On, using a test light connected to ground, probe the battery terminal at the back of the gauge. Test light should light up. If not, check fuse. If fuse good, check wire.
2. If you have battery at the gauge, ignition On, find a GOOD ground and jump to the sensor terminal at the back of the gauge. Gauge needle should sweep to its limit. If it does, gauge is good, move to step 3. If it does not sweep, replace gauge.
3 Ignition On, Again, using a GOOD ground, disconnect the sensor and jump from ground to the sensor wire terminal. If the gauge pegs again, sensor wire is good, go to step 4. If it does not, you have an open circuit in the sensor wire between the gauge and sensor.
4. Using a volt ohm meter, check for continuity between the body of the sensor(not the center terminal) and the intake manifold, you should have continuity, if you do, the sensor is bad. If you don’t have continuity, remove sensor and clean excess gook from threads, reseal and reinstall.