Why would my 97 Olds Aurora idle cool and run hot? Just replaced the engine due to leaking head gasket (engine had over 201,000 miles). Replacement engine also runs hot. Replace the radiator. Engine still runs hot. Front air scoop is missing, but has been for over 5 years. Any suggestions would be appreciated.

Could be bad install on water pump or wrong pump, Bad install on timing belt, colasping suction hose from rad to water pump. Could be a bad head gasket or cracked head. you did not tell us why you replaced the water pump. was the car running hot before. ? Check your oil to see if there is any water in it. would look like brown mud .. if there is water in it. Post a comment and let us know what you find.

does anyone have experience changing a water pump on a 2001 ...

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Aug 13, 2008 - aurora.................good luck. if u got the "short star" (3.5 dohc v6) good luck. if u got the 4.0........even better luck. happy trails. TonWon · 8 years ...

Aurora 4.0 Exhaust Leak and Water Pump Whine - YouTube

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https://www.youtube.com/watch?v=5mjg_Ps1Ctg
Dec 13, 2012 - Uploaded by Brendan Doyle
Aurora 4.0 Exhaust Leak and Water Pump Whine. Brendan Doyle ... How to Install a Waterpump on a Cadillac Northstar engine. ...How to access spark plugs on a 2001 Oldsmobile Aurora 3.5L Engine - Duration: 3:19. Dennis ...

Oldsmobile Workshop Manuals > Aurora V6-214 3.5L VIN H ...

workshop-manuals.com/oldsmobile/aurora/...3.5l.../water_pump/.../page...

Oldsmobile Workshop Manuals > Engine, Cooling and Exhaust > Cooling System ...Aurora V6-214 3.5L VIN H SFI (2001) ... Install the new water pump gasket.

How to change water pump on 2001 olds aurora 3.5 - Fixya

www.fixya.com/.../t16902718-change_water_pump_2001_olds_aurora_...

Mar 4, 2013 - 4.0? It's not that hard to replace but you need a special socket to changeit ... The starter motor sits in the "valley" between the two bank of cylinders ...

Because leaking gasket,normal for GM cars.

First off you never have to drive to seal any gasket! If it did not run hot before the replacement of the pump it should not run hot now unless something is defective or improperly installed.Presure test the system for leaks first and repair any leaks before doing anything else.Be sure to make sure that the Head Gaskets are not leaking as well!

Sounds like you have a faulty head gasket or maybe a cracked head.This can cause overheating and the check engine light to come on.The code for the o2 sensor is probably caused by coolant getting into the exhaust system and coating the sensor.The coolant fan may work but it cannot remove enough heat from the rad to make the engine cool off.Try some engine coolant stop leak to see if it will help.This maybe only a temperary fix.Let me know if you need more.MOE

is the coolant reservoir bubbling while engine is running??? if so, two things may be going on, 1st, one of the 2 cooling fans may not be working properly, usually the a/c condenser fan goes bad causing an intermediate over-heat and if the bubbling in the reservoir is happening then you now have a external leak in the cylinder head gasket from the over-heating causing a rough idle at times...you will need to have the head gasket replaced hope this helps.

sound like a blown head gasket and a worped head, when removing head for gasket replacement check head for flatness also preasure test it for cracks and leaks. find cause of over heating replace cap,radiator, thermostate, hoses

Dude KravCar i seriously want to thank you for helping me fix my car!!@! i have a 1995 Oldsmobile Aurora Northstar 4.0 V8 and i came across your response to someone who was having an overheating problem with their Northstar Engine.....you commented for them to remove and inspect one of the purge lines to bleed out the air........ now after countless hours in my garage and wrongful diagnosis from a repair shop i finnaly have my engine running back fine after reading your response......thanx dude

with the cap off when you start the car does the water shoot out? if so the head gasket is blown and when the cap is tight the water is pressurized by the leaking head gasket and will cause to overheat from pressure blowing all the water out of the overflow. or the head gasket leak is boiling the water in the head and causing the water to overheat.
this is my guess or you have a coolant leak somewhere over the exhaust and it isnt making it to the ground from evaporation.
check for swollen hoses. if you have swollen hoses ill bet they are covered in oil this will break down the rubber and weaken the hoses keep all oil leaks from getting on your hoses at all times as this will destroy them.if you need to replace the cap then the pressure release in the cap is worn out or stuck and the pressure isn't reaching the over flow. replace cap and see if problem is resolved.overheating isn't usually caused by a cap.
but cars differ in design and the thermostat may need the pressure to release properly.
if that doesnt work try replacing the thermostat it is responsible for releasing hot water from the engine to the radiator to be cooled by the fan then close off so the water can cool in the radiator. if this cycle doesnt work properly then the thremostat is usually the culprit.
replace as nessesary.
good luck

I've had the same problem all year. I've had four different mechanics look at this car - 97 legacy with 2.5. I've had the coolant seals replaced, the radiator cap, the thermostat, the water pump - all to no avail. I've realized now that it only overheats shortly after running sustained high rpm's. Recently the last mechanic mentioned the bleeder valve (I didn't know it had one and think maybe he didn't know either - not a subaru mechanic). Recently it overheated again (again sustained high rpm's - apparently more prone to produce air in the system), I sat the vehicle on an incline (raising the bleeder valve to be the highest point) and let the car warm up and run for half an hour. Now 300 miles and no overheat. I went through alot with this car to get to this point. Unbelievable.