2000 caddillac dts overheating

2000 CADILLAC DEVILLE DTS
129,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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QUINT45
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the car I have is overheating. I replace the water pump, coolant tank, radiator, thermostat, top n bottom holes to radiator, checked the lines/clear. car is still running hot. even when its just sitting there idling. before I changed the water pump and radiator, I could drive it under 45mph and leave it idling without it overheating. now just sitting running, it overheats. help?
Mar 27, 2017 at 1:10 PM
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HMAC300
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  • 48,601 POSTS
pressure check for a head gasket leak also there is a chemical additive you can get at auto parts that will detect a leak.
Mar 28, 2017 at 9:47 AM