Question about Cadillac Eldorado

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According to CarFax the radiator was flushed out in 1998. My mechanic wants to pressurize the radiator to see if there is a leak, since the thing overheated yesterday and lost a substancial amount of coolant. He told us to cut the air conditioner on and leave it running in the meantime, since both fans would come on and keep it cool until we could return for the pressure test.

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Posted on Jun 23, 2009


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1 Answer

I have 1998 suzuki vitara, i have noticed even when engine cold, there is lot pressure in radiator when i open the cap!

Does it still make heat as normal? If not, may be stuck thermostat, time to replace this. Could also be a clogged radiator...if no leaks, may just need radiator flush...

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My engine is overheating. I have replaced the thermostat, and did a pressure test (found a small leak in my radiator). I have flushed the coolant and refilled with bars leak (for the radiator leak)

bud not to be funny get the head gasket replaced and get some expert to see if your head is not buckled or hair cracked due to over heating

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My 1998 century over heats

Check condition and operation of thermostat.
Check operation of radiator cooling fan when hot.
Check radiator coolant level. If low, then perform a cooling system pressure check to identify cause of leak.
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Nov 07, 2012 | 1998 Buick Century

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Water seems to leak from my engine ... when i fill my radiator up ..

For radiator replacement procedure and radiator problem troubleshooting. I suggest you to click the link below and follow the detailed procedure :-----

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Transmission fluid leaking?

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This details will help.


Feb 06, 2012 | 1998 Kia Sportage

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How to flush a radiator in a 1998 chev lumina

remove the coolant at the bottom drain valve, then remove the bottom radioator hose also the top radiator hose, make sure its park at the steet or curb. put a garden hose on the top radiator hose holding up with a rag around the hose and radiator hose so it wont leak the pressure. and just let the bottom empty all that **** out. i done this to so many cars to clean up all the built up between the guides. hope this helps you k!!!

Aug 01, 2010 | 1998 Chevrolet Lumina

1 Answer

My car is over heating when im going down the hwy

May have head gasket leak. If so will be loosing water, possibly quite slowly. At highway speeds cylinder pressure is higher and so gasket leak more likely. Means gasket damage or loose cylinder head. Can be checked by mechanic. (pressure test and cylinder head bolt tension test)
Less likely alternatives, the spark timing is too advanced or the fuel too poor.

May 28, 2010 | 1998 Oldsmobile Aurora

1 Answer


Where is it leaking from? The radiator its self, the heater core found under the dash, or some where in between? Look for pools of coolant under the front floor mats, If you find it there, then the heater core needs to be replaced. Next time it happens, Pull over immediately and look under the car to see where it is leaking, (look from more than one angle). Or park it over some clean cardboard, where ever the stains are, will give you a clue of where to look for the problem. And most easy, Bring it back to the mechanic who installed the new radiator., Most legitimate mechanics warrant their work and yours may be responsible in some way, or at least be familiar with your particular Caravan.
The solution is to locate and fix the leak, but also perform a thouro cooling system flush. The system bay have serious dirt, clay, or corrosion that is causing issues with proper flow and pressure, thus causing leaks.
And Always Pull Over when it begins to OverHeat! Heat damage to an engine can spell Death to any Car, even Caravans. Good Luck.

Jan 04, 2010 | 1998 Dodge Caravan

2 Answers

1998 aurora overheating

I had the same problem and tried several things that didn't help. A friend introduced me to a Northstar mech. that explained the real problem. Internal engine relief was faling which created overheating between cylinder sleeves and engine block creating blow back pressure in cooling system. There is a fix for this. The mechanic helped me with the problem and car is running once more... Anyone thinking they have a head gasket, intake gasket, or thermostate problem should look at this fix.

Jun 01, 2009 | 1999 Oldsmobile Aurora

1 Answer

Coolant leaking,temperature too hot when stopped

sounds like your being ripped off if mechanic cant isolate and repair what is a simple problem.You will need to find a mechanic who has a pressure tester to isolate the leak and confirm that its leaking from that specific point not guess and replace at your expense every part of the water system.

Oct 19, 2008 | 2002 Oldsmobile Silhouette

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