Question about 1994 Cadillac Eldorado
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
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
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
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
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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