Question about 1999 Chevrolet Malibu
If you are loosing coolant, you need to find out where. If nothing is coming out externally, then it has to be going inside. If you have a cracked cylinder head or blown head gasket, you can diagnose this by having a hydrocarbon test done at radiator. If you do, that can explain the fan problem as exhaust can drive coolant down below the sensor...no sensor reading...no fan.
You also need to check the fan relay and fan itself (fan quick check is to hot wire it to battery...if it runs, it's OK) Most manuals run through the test procedures you need...get one and do some testing.
Posted on Jul 30, 2009
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Posted on Jan 02, 2017
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