Question about 1995 Cadillac Eldorado
When the car is completely cool,check the electric fan(s) for smooth rotation.
Clean/check/change the thermo sensor,contact and wire.
Excavate air pocket in coolant system / check for head gasket leak
This test will kill two birds with one stone.
MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!
RAN THIS TEST IN A WELL VENTILATED AREA ONLY!
You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!
Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .
Top of the coolant reserve tank
Let it ran for 10-15 minutes.
Monitor for air pockets escaping from coolant reserve tank.
Small amount of bubbles is OK at 1-5 minute mark
After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.
If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.
Give the thermostat host few gentle taps.
If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.
Let engine cold down and top off coolant reserve tank.
Start monitor for coolant lost
A coolant flush is require every 2 years or 24,000 miles.
I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.
Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.
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Posted on Dec 05, 2009
If problem 2 is really elated to the low fuel incident then most likely you have pulled some debris from the bottom of the fuel tank and replacing the fuel filter will remedy your problem. The are cheap and need replacing periodically anyway and it's a good place to start.
Overheating only has a few causes, I am going to assume you are not running the car low on coolant or on low engine oil. Those 2 will not only overheat you but kill your engine in a hurry.
The second possible cause is a lack of coolant circulation which can be observed by open the radiator cap on a COLD CAR ONLY! Then start the car and watch for circulation. It may take a few minutes for the engine to warm up to open the thermostat but then circulation should be visible. If not the the thermostat or water pump are not functioning properly and will need replacing.
If you have circulation and are not low on fluids then generally it is a blown head gasket or a crack in the head or block which will cause remnants of oil in your anti-freeze and or anti-freeze in your oil.
Posted on Nov 13, 2009
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Posted on Jan 02, 2017
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