Engine Coolant Temperature Gauge Inaccurate Or Inoperative; Engine Oil Pressure Gauge Always - GMC Chevrolet Camaro 1998 Service Manual

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Body and Accessories
Instrument Panel, Gauges and Console 8-483
Engine Coolant Temperature Gauge Inaccurate or Inoperative
Step Action
Value(s) Yes
No
1. Turn the ignition ON and the engine OFF.
2. Disconnect the engine coolant temperature gauge
sensor connector.
3. Using J 33431-8 J33431 or equivalent, connect one
red clip lead from the tester to the sensor connector
1 terminal A.
-
4. Connect the other red clip lead to ground.
5. Adjust the resistance dials of the tester to 380
n
and
then 55
n.
Does the coolant temperature gauge register 71 °C (160°F)
and then 127°C (200°F)?
Go to Step2 Go to Step 3
Replace the engine coolant temperature gauge sensor. Go to Instrument
2
Is the repair complete?
-
Cluster
-
System Check
Inspect for a poor connection or high resistance in
Go to Instrument
3
CKT 135.
-
Cluster
Did you repair a poor connection? System Check Go to Step 4
Replace the instrument cluster. Refer to IP Cluster
Go to Instrument
4
Replacement.
-
Cluster
-
Is the repair complete? System Check
Engine Oil Pressure Gauge Always High (VS Vin G)
Step Action
Value(s) Yes No
Important: Inspect for proper oil level, then inspect oil pressure with a mechanical gauge before proceeding. Refer to Engine
Mechanical Specifications in Engine Mechanical.
1. Turn the ignition switch to the RUN position with the
engine OFF.
1
2. Disconnect the oil pressure sensor connector.
-
3. Connect a jumper between terminal A of the
connector and ground.
Does the gauge move back to the left (low pressure)? Go to Step2 Go to Step 4
Inspect the oil pressure sensor connector for a poor
Go to Instrument
2
connection.
-
Cluster
Did you repair a poor connection?
System Check Go to Step 3
Replace the oil pressure sensor. Go to Instrument
3
Is the repair complete?
-
Cluster
-
System Check
Inspect CKT 31 for a poor connection or open. Go to Instrument
4
Did you repair a poor connection or open?
-
Cluster
System Check Go to Step 5
Replace the instrument cluster. Refer to IP Cluster
Go to Instrument
5
Replacement.
-
Cluster
-
Is the repair complete?
System Check