Question about 1998 Cadillac Eldorado

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COOLING 1998 Eldorado northstar engine

I have a 1998 eldorado with a little leak between the firewall and the engine I can't see where is coming from . The metal tubes going to the heater are only thing that I can see.The water drips in the middle of the car. If you drive 55 it will get hot quick. But if you slow down the temp go down some.

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Check the termostate it's not opening up all the way

Posted on Mar 17, 2009

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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

I WOULD LIKE TO KNOW MY FIRING ORDER ON MY 93 ELDORADO CADILLAC


if its a northstar engine its1-2-7-3-4-5-6-8 if its a 4.9 engine its 1-8-4-3-6-5-7-2 in 1993 0nly the eldorado etc and the seville sts had the northstar engine

Aug 27, 2010 | Cadillac Eldorado Cars & Trucks

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My 1997 cadillac eldorado overheats plugs, thermostat, water pump, intake value have been replaced and still over heats.


Make sure the air in the cooling system is bled out,and make sure the cooling fans are coming on,and going off on there own.If they come on,they have to go off too,when it cools down.If the cooling fans do not come on,bled the cooling system,and replace the coolant sensor,this tells the computer to activate the cooling fan relays.Also check the fuse,and the cooling fan relay.

Apr 14, 2010 | 1997 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

1 Answer

'99 cadillac eldorado, Northstar engine w/AC problem


Have you unhooked the battery since you put the freon in? If not, do it.

Jul 04, 2009 | 1999 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

1 Answer

Northstar Engine


First NORTHSTAR ( 1992 ) engines were quite troublesome, from faulty starters ( in the middle of the engine ) to loss of oil pressure.

Apr 08, 2009 | 1992 Cadillac Eldorado

1 Answer

Location starter on 1998 cadillac eldorado northstar engine


well some people like where it is and some don't! i do on my 1997!, i assume u have a 4.6 engine? if u do the starter is under the intake manifold,on a 4.9 engine it is under the car on the left side facing the car, these can be a paine.,go to your local auto supply store and pick up a auto repair manual for your car,by Haynes,good book to own. the 4.6 starter is not that bad to tackle,hope we helped and good luck to u.

Mar 08, 2009 | 1998 Cadillac Eldorado

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