Question about 1994 Cadillac Eldorado

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94 Cadillac Eldorado overheating uphill

Cadillac Eldorado overheating only when i go up hills, changed thermostat, heater core, upper hose, radiator, and water pump. Runs fine around town, soon as i go uphill it over heats boils all coolent through releaf hose, both fans ruining full time

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This actually sounds like your motor is not the problem it sounds as
thougth your transmission is in need of work. if you have flushed your
system also may look at your oil pump system as the change in pitch of the road to climb hills may infact be pulling sludge against the sump
tube screen and plugging the oil pump. these are the only two reasons I can see for this to happen if system only dose this when climbing a hill
.

Posted on Dec 19, 2012

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Posted on Jan 02, 2017

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dennymulford
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SOURCE: 96 Deville Overheating....TroubleShooting

did you run a compression check? if so and its good then you have a blockage in the water jacket
if not then you have a head gasket leaking

Posted on Feb 26, 2009

Kravcar
  • 192 Answers

SOURCE: 1993 Cadillac Eldorado overheating

I am assuming you have the Northstar engine.

Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.

Are you running it without a thermostat? If so,then strangely enough,this will cause overheating as the Northstar cooling system is different to most conventional systems and therefore will not help you diagnose the problem.

Posted on Aug 22, 2009

bluebirdmate
  • 1190 Answers

SOURCE: i have a 99 cadillac eldorado it is overheating i

Hello: Open hood, stand in front of car look on left side (driver side) of engine toward the radiator, there will be a black metal guard, under the guard there will be a small belt. This is the belt that drives the water pump. Make sure the belt is there. If belt is there start car and with engine running check to be sure belt is turning and that the water pump is turning. If all that is okay then you may have blown head gaskets. To check head gaskets you need a sniffer tool to smell the engine coolant which will tell you if you have exhaust gas in the coolant.

Posted on Jan 21, 2011

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My heating stopped working in my 1992 Cadillac Eldorado what is the problem


Try checking the heater control switch/valve, sometimes located in line with the heater hoses (it is a fairly common defect). You may also have a clogged or bad heater coil. (similar to a small radiator) or maybe a fault in the heat system's controls.

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My heat stopped working in my 1992 Cadillac Eldorado what is the problem...


1.COOLING SYSTEM POSSIBLY BLOCKED . SOME TIMES BACK FLUSHING USING A WATER HOSE.
2. FLUSH RADIATOR
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5. PUT WATER HOSE IN WHERE YOU REMOVE THE THERMOSTAT
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I have a 1976 Cadillac Eldorado Conv. and changed out the 2 core radiator that was not stock for a 3 core radiator both have had overheating issues. I have also replaced the thermostat. Can you give me...


i had a 81 oldsmobile i had to put a 3 core radiator in and a direct drive cooling fan, had to get rid of flex fan it was not pulling enough air through radiator to cool the engine,when sitting idling in long traffic line,i got direct drive fan off 350 engine dont use the clutch type fan.

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NEED A LITTLE MORE HELP 88 CADILLAC ELDORADO NO HEAT,HAVE REPLACED THE THERMOSTAT STILL NO HEAT.TALKED WITH DEALER THEY SAY NO HEATER HOSE CONTROL VALVE HOW HARD IS THE CORE TO GET AT. CANT SEE HOSES UNDER...


The heater core may be stopped up.Remove bothe heater hoses from the heater core,and use a water hose to flush out the heater core.Put the water hose up against one heater core pipe,it will come out the other pipe.Make sure the vent door inside the car is moving when you select heat,If I can help,any further,please let me know.>>roniecon@gmail.com

Oct 06, 2009 | 1988 Cadillac Eldorado

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My 1999 Cadillac Eldorado north star is over heating, how can i change the thermostat? where is it located?


The thermostat is usually located on the engine end of the upper radiator hose.

Drain the radaitor of coolant, remove the upper radiator hose from the housing.
Usually a couple of bolts hold the housing in place, once the bolts are removed, seperate the housing from the engine, you should now see the thermostat, you will also discover it has a gasket to be replaced at the same time. make sure the surfaces are clean, use some gasket cement to hold the new gasket in place. reassemble the unit, reinstall rad hose, and refill radiator.

Hope this is od some help.
Ed

Apr 20, 2009 | Cadillac Eldorado Cars & Trucks

1 Answer

1999 cadillac eldorado


Just follow the Upper Radiator Hose to the Block. The Hose will attach to a Bell housing on the Manifold. Remove this Bellhousing and the Hose. The Thermostat is Right underneath the Bell Housing. Reinstall the Same way that the Old one is sitting when you find it or it will not work Properly.

Jan 26, 2009 | 1998 Cadillac Eldorado

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