Question about 1993 Cadillac Eldorado

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1993 cadillac eldorado V8 4.9 engine is overheating

I have already flushed the coolant system

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: overheating

I assume you are talking about a Northstar. Could be a lot of things. Start with the coolant level. Another easy step is to check the coolant pump belt. It is located at the top of the motor (driver's side front). It is under a belt guard next to the valve cover. You can see and feel the belt under the cover without removing anything. The belt is only about 1/4" wide and is driven by a pulley off the overhead cam. You can see the tension pulley as well. My problem was a broken belt and an easy fix.

Posted on Nov 08, 2008

MrScary66613
  • 1990 Answers

SOURCE: 1996 cadillac eldorado turn signal flasher

Very well could be. Cadillac changes from year to Year. If so it will be a Small box or Circle Plugged into a Wiring Harness.

Posted on Jan 22, 2009

cadman000
  • 607 Answers

SOURCE: Overheating

Many items need assessment. First what is THE COOLANT LEVEL enine running from cold start. IF LOW . Is there a coolant leak and where ? Lets say all of the previous check OK. ARE THE COOLING FANS OPERATING ? . They are , GREAT. Is it possible the cooling system ( i.e. radiator ) is clogged internally, or blocked exterior cooling fins of the radiator restricting cooling air. Hope this helps.

Posted on Apr 16, 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

  • 396 Answers

SOURCE: wire diagram for a 1993 cadillac eldorado radio

Easiest way. Go to any auto store, Pep Boys etc, locate the book for the year of your car and write down the wire diagram.

Posted on Sep 10, 2009

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1 Answer

1993 Eldorado Cadillac ac compressor won't take freon. Display says compressor off, low refrigerant. How to bypass computer? Can compressor relay be jumped using paper clip? Which holes? to


Grab some refrigerant gauges and take readings. If the low side has more than 40 psi or so of pressure, the low limit switch will close and allow the compressor to run. If there is indeed low pressure causing the compressor not to run, you will need to flush the system after eliminating the source of the leak. If the a/c compressor has never been changed, it is probably the source of the leak.

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The Heat only works on defrost and on the floor. Cannot get the heat to come out of the vents.


If you have heat then you need look no farther with coolant. The only problem you have is with the damper that is controlled by the switch method on dash. Either something is undone or stuck. Sometimes a vacuum line is disconnected. Good luck. Oh, don't force anything under dash, plastic breaks easily.

Feb 23, 2013 | 1993 Cadillac Eldorado

1 Answer

94 Cadillac Eldorado overheating uphill


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
.

Dec 07, 2012 | 1994 Cadillac Eldorado

1 Answer

Overheating


ignition timing off,check engine coolant level make sure coolant level is not too low.make sure you have 50/50 mixture of antifreeze and water in cooling system.if been long time i would flush out engine block and radiator.replace water pump and thermostat and replace radiator pressure cap.make sure front grille and radiator core not blocked restricted preventing air flow through the radiator.make sure cooling fans are working also.check engine oil if looks like milk shake you have blowed head gasket which will cause car over heat.

Oct 02, 2012 | 1991 Cadillac Eldorado

2 Answers

1999 Cadillac eldorado overheating. Changed thermostat, still overheating now with white smoke coming from exhaust. Checked water pump belt, it is there and turning. Cold air blowing from heater, no heat.


coolant leaking into engine probably blown head gaskets. More damage will occur the more you drive it. Unfortunate and expensive repair on a northstar.

Aug 24, 2011 | 1999 Cadillac Eldorado

1 Answer

97 cadillac eldorado overflowing through overflow pipe


The most common overheating problem with the Northstar engine is a blocked purge line. It's job is to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank(not the cap),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.Or trace the hose back until you find the blockage.The hose goes in to the engine to a crossover and comes out the other side to near the thermostat housing,the blockage may be there.

Apr 11, 2010 | 1987 Cadillac Eldorado

2 Answers

2002 CADILLAC OVERHEATING BUT WHEN I GIVE IT GAS IT COOLS DOWN


Water (coolant) level is probably low, or it has air in the system.

Jun 08, 2009 | 1993 Cadillac Eldorado

1 Answer

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.

May 29, 2009 | 1993 Cadillac Eldorado

1 Answer

Overheating


Many items need assessment. First what is THE COOLANT LEVEL enine running from cold start. IF LOW . Is there a coolant leak and where ? Lets say all of the previous check OK. ARE THE COOLING FANS OPERATING ? . They are , GREAT. Is it possible the cooling system ( i.e. radiator ) is clogged internally, or blocked exterior cooling fins of the radiator restricting cooling air. Hope this helps.

Apr 16, 2009 | 1993 Cadillac Eldorado

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