2002 Cadillac El Dorado engine overheating

2002 CADILLAC ELDORADO
110,987 MILES • V8 • 2WD • AUTOMATIC
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THEMEATMAN
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  • 1 POST
put in new radeator new theremstat new coolant new cap pressure tested head gasket and system runs fine for a few days coolant gets about a quart low then it starts to overheat there are no visible signs of coolant loss in or under the car or around the water pump
Dec 11, 2008 at 1:56 PM
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RASMATAZ
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  • 75,992 POSTS
Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: ,Pressure test the Rad. cap,Clogged radiator,air lock in the cooling system ,Fan clutch,Radiator electrical fan,collaspe hoses,water pump
Dec 11, 2008 at 2:28 PM