Question about 1998 Pontiac Bonneville

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Water leak 1999 olds 88, 3.8 motor, loosing water, cannot see leaking, heater starts blowing cold, all water from overflow gone!?

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Water Pump

Posted on Jan 29, 2009

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Sounds like heater core is it wet in the front on the floor under dash check out or the heater valve could be leaking also

Posted on Jan 01, 2009

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1 Answer

Water disppaearing out reservoir box ew radiator.......


Could be your water pump is leaking or a loose hose clamp,to find out for sure Sherry,you need to get under front and look for antifreeze,will need a flashlight,and follow to where it's coming from.Usually when cold,the antifreeze will be on that mark on the overflow container,then after driven for a while,it will expand and rise to the hot mark.You also have heater hoses going to heater core,is floor board in front wet.You have a hose going to thermostat and water pump.Also check radiater cap.

Mar 22, 2013 | Cars & Trucks

1 Answer

Loosing antifreeze


fix the water leak at the heater first. You may be loosing pressure in the radiator allowing the coolant to boil at a low temp. This will pass water to the overflow bottle which is when you will be able to smell it

Jan 13, 2013 | 1999 Plymouth Voyager

1 Answer

Water leaking behind motor when car is parked passenger side oddly when motor is cold


Could be a line leaking also could be heater core leak or water pump or comeing from overflow. Many things it could be. My best suggestion is take it and have it looked at. hard to guess with out looking at it

Aug 12, 2012 | Audi A4 Cars & Trucks

1 Answer

Overheating


OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.

Aug 04, 2011 | 1999 Oldsmobile Alero

2 Answers

Overheating leaking water profusly especially when you turn it off. Leaking somewhere behind the motor, also passenger side heat is blowing cold air


With the location of the water leak and the cold air, it sounds as if the heater core is leaking or one of the heater hoses going to or from the core has a hole in it. The heater core is on the passenger side of the vehicle, inside, against the firewall. Is the carpet wet underneath on that side?

Mar 23, 2011 | 1998 Cadillac Catera

1 Answer

My 1999 ford windstar is only blowing cold air and no heat


possable problems:

1. coolant leak (level too low to fill heater core)
2. headgasket leak forcing the coolant out of the overflow.
3. stuck thermostat.
4. bad water pump. if the impelers are broken, coolant wont flow.
5. HVAC malfunction. system may think you selected cold or is unable to move diverter. maybe a fuse,solenoid or vaccum leak? (hvac controler uses vaccume controled soleniods)
6. airlock. if you have resently changed your coolant, you may need to repeatedly squeeze the heater core hose to help force out the air.

May 19, 2010 | 1999 Ford Windstar

2 Answers

My antifreeze is leaking out of my radiator .....HELP : (


adding antifreeze on its own can be bad for your motor.. it needs to be added with water.. does it leak from your radiator cap/ overflow hose or from the radiator core.. ckeck you thermostat as well. it stays closed when the water is cold and opens when it gets hot.. it sounds like it could be stuck shut..

Feb 25, 2010 | 2002 Pontiac Firebird

2 Answers

1999 Grand am GT keeps trying to overheat the heater blows cold and then it"ll kick heat on cooling the car down i've had intake gasket thermostate water pump replaced and the radiater flushed twice alond...


sounds like your either low on coolant or a possible blown head gasket, the head gasket will create too much pressure in the cooling system and blow your coolant out of the overflow and fill the heater core with air causing the heater to be cold or your just low on coolant due to a leak or improperly filled cooling system. so fill the cooling system resovoir while vehicle is running while keeping the level at "full hot" line until the fans have come on and gone back off (a/c and defrost must be off) then drive on the interstate until the heater gets hot. if the vehicle tries to push the coolant out while filling the system headgasket is a definite possibilty. BE CAREFUL COOLANT GETS HOT!!!

Nov 24, 2009 | 1999 Pontiac Grand Am GT

1 Answer

1999 Buick LeSabre - A/C blows only on windshield


Inside the heater box (under the dashboard) there are actuators that are similar to the ones that open your power door locks, they do go bad especially if any water leaks in from a bad heater core or windshield leak.(down the defrost vent grate). Also old age, my truck is a 2000 and I have replaced a couple of actuators.

Sep 03, 2009 | 1999 Buick LeSabre

1 Answer

Leaks and overheats really fast


hi it sounds like your headgaskets blown you need to take your rad cap off fill with water start the engine see if you see any bubbles in the water or if the water blows straight out its a good indication the headgaskets gone the thing on the right hand side is the expansion tank overflow if this blows water out even when cold the headgaskets gone if you see no bubbles in the water change your thermostat the two fans on the rad have nothing to do with your a/c if that doesn,t work may need pressurising yates210456

Oct 01, 2008 | 1992 Honda Accord

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