Question about 1999 Oldsmobile Alero
I visually tried to view where the leak was.. slid under the vehicle and tried to look up from beneath. all I could see was trickling liquid running along the block down to the ground.. couldnt see any hoses leaking or punctures or spraying water.. Not sure if item was a water pump close to me or not but it appeared if it was it was above that part.. is there a soft plug or something like that above that could have started a leak? The motor has starting running warm to the 3/4 mark of hot..on gauge. Have had the red icon showing low fluid in radiator or container light up.. then go off.. have filled up the reservor and kept the cap loose as not to push the coolant out fast.. is this bad for this system.. However last night I started the car up .. plenty of water in reservoir drove couple blocks.. car warmed up but no heat ..then heat..then light came on then no heat then heat.. then a funny noise.. like a pencil tapping an inside plastic container for a couple taps.. got home a few blocks away.. checked the engine.. checked fluid added some while engine running.. then turned off motor.. any ideas about this leaking situation.?
Lets hope you can find & fix the leak
I think the noises are just air,that will go away
once you fix & fill the system
Leave the cap on- so it can draw back coolant
at night -when engine cools
Posted on Dec 01, 2012
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Posted on Jan 02, 2017
REPLACE THERMOSTAT.ITS STICKING CLOSE TO KEEP COOLANT FROM CIRCULATING THROUGH ENGINE AND RADIATOR. THE FANS SHOULD COME ON WHEN VECHICLE SETTING AT A LONG IDLE.THE COOLANT TEMPERATURE SENSOR GET TO CERTAIN TEMPERATURE WHICH WILL COMPLETE CIRCUIT PCM SEND POWER TO COOLANT SENSOR THEN TO COOLANT FANS RELAYS AND FANS.IF VECHICLE OVER HEATING WHILE MOVING THERMOSTAT FAULTY.IF YOU TURN AC AND COOLANT FANS DONT RUN CHECK COOLANT FANS FUSE AND RELAY.IF COOLING FANS DONT TURN ON WITH AIR CONDITIONER ON EITHER COOLANT TEMPERATURE SENSOR FAULTY OR PCM FAULTY.IF ALL LOOKS GOOD.IF ENGINE OIL LOOKS LIKE MILK SHAKE.YOU HAVE BLOWN HEAD GASKET.
Posted on Nov 12, 2010
Testimonial: "This was all checked and fixed. You are right however the downpour of the radiator fluid out of the overflow tank area said it was the water pump. "
That engine is FAMOUS for the intake manifold gaskets to leak. Does it run hot all the time or only when its low on coolant. When its hot and the fans are on, is the air coming through the radiator HOT? it should be, if its not HOT or LUKE WARM, the radiator isnt flowing coolant. Make sure the water pump isnt leaking. The thermostat is a pain to replace, so make shure its bad before replacing it. Does it run hot sitting still or going down the highway? If it cools on the road, check the cooling fans. They only work when the a/c is on OR till the engine is approx 230f or so.
Posted on Nov 20, 2009
you cant use water to fillied that can damaged the waterpump you need the special antifrezze for this van check the radiator hose
Posted on Oct 14, 2009
SOURCE: 1998 aurora
I have had this problem with my 98 aurora and have replaced all the same components. Temp gauge routinely shows 200 on highway (Fine) but in the city in stop and go will get to around 245. I installed a switch to manually turn on the cooling fans by connecting the ground to pin 86 in the relay for the fan(s). Otherwise the fans will not turn on to 245. This fix works but would like to know an actual solution.
Posted on Jul 12, 2008
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