Question about 2006 Buick LaCrosse

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What causes coolant to leak on my 2006 buick lacrosse but it not leaking out of the water pump or the radiator hoses

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toddgilbert

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  • Buick Master
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Here's the link and I'm sure you will get the solution of your problem Buick Allure LaCrosse Workshop Service Repair Manual 2005 2006 2007 2008...

Posted on Sep 26, 2017

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5 Related Answers

Anonymous

  • 319 Answers

SOURCE: coolant leak underneath, 03 h2. could thhis be a

Could be the overflow canister or a seal in the front of the engine. Have the system pressure tested to be sure of the origin.

Posted on Feb 27, 2009

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Anonymous

  • 41 Answers

SOURCE: coolant leak 1998 buick external

it sounds like the water pump may be leaking beacuse when runnung the seal is lubricated and may not be leaking at that time but when left over night the seal in the water pump contract and starts to leak. check for stains and leaks with a mirror before starting in the morning i think you will find that it is leaking. don't worry they are not bad to change. good luck

Posted on Mar 24, 2009

Richard Scordino

  • 6982 Answers

SOURCE: Coolant runs down the frame rail on the passengers

First, is the operating temp normal? Have you looked carefully to see if the leak is visible after you turn the engine off after a drive? Have you lost coolant? Have you checked to make sure it is actually coolant and not condensation from the air conditioner (normal)? If you verify coolant (green), then remove the bottle and fill it with water. If it's leaking, common or not, you need to replace it. (generally inexpensive at any scrapyard)

Posted on Jul 06, 2009

ourhowse

Dar

  • 2007 Answers

SOURCE: My 98 Monte Carlo is leaking (spraying) coolant

Replace water pump.

Posted on Jul 30, 2009

Anonymous

  • 4 Answers

SOURCE: leaking coolant/ not from hoses or water pump /or

check your heater core

Posted on Aug 10, 2009

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2006 buick lacrosse heater core change

THIS IS A JOB FOR AN EXPERIENCED MECH. TAKE IT TO A MECHANIC WHO DOES SIDE WORK.
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My 2008 Buick Lacross is overheating and the engine check light is not on,

First you must check the cooling system out partially clogged radiator,collasped hose (inner) ,cooling fan not coming on ,head gasket leak, thermostat and if all those check out possible a/c causing overheat

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/john_1c0d56ae6561cc2b

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2006 buick lacrosse My car is running hot I changed the water pump radiator and thermostat already

I am currently having the same problem with my 2006 Buick lacrosse I changed water pump, thermostat , radiator, radiator car bled it add dex coolant but it's still running hot...got it tested for the psi n it came bak good reading
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Steady coolant leak but reservr stays full 03 buick rendevous

steady coolant leak could be coming from radiator hose at thermostat or water pump.check water pump weep hole and gasket for leak.check heater core hose leaks or look for leak at the radiator side containers.
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Losing a lot of coolant. I don't see a leak. I started to drain the system and it smells burnt to s**t. What might my problem and possible solutions be?

see this causes and fix it. God bless you
Water pump -- A bad shaft seal will allow coolant to dribble out of the vent hole just under the water pump pulley shaft. If the water pump is a two-piece unit with a backing plate, the gasket between the housing and back cover may be leaking. The gasket or o-ring that seals the pump to the engine front cover on cover-mounted water pumps can also leak coolant. Look for stains, discoloration or liquid coolant on the outside of the water pump or engine.
Radiator -- Radiators can develop leaks around upper or loser hose connections as a result of vibration. The seams where the core is mated to the end tanks is another place where leaks frequently develop, especially on aluminum radiators with plastic end tanks. On copper/brass radiators, leaks typically occur where the cooling tubes in the core are connected or soldered to the core headers. The core itself is also vulnerable to stone damage. Internal corrosion caused by old coolant that has never been changed can also eat through the metal in the radiator, causing it to leak.
Most cooling systems today are designed to operate at 8 to 14 psi. If the radiator can't hold pressure, your engine will overheat and lose coolant.
Hoses -- Cracks, pinholes or splits in a radiator hose or heater hose will leak coolant. A hose leak will usually send a stream of hot coolant spraying out of the hose. A corroded hose connection or a loose or damaged hose clamp may also allow coolant to leak from the end of a hose. Sometimes the leak may only occur once the hose gets hot and the pinhole or crack opens up.
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Possibility of a cracked block. how can i be sure/

Vehicles: Any with the above symptoms

A cracked cylinder block will cause either:
(a) motor oil contamination of engine coolant
(b) coolant contamination of motor oil
(c) white exhaust smoke, due to coolant seeping into one or more cylinders.
(d) more than one of the above
(e) all of the above

Oil infiltrating into coolant is easy to see - drain some coolant out through the pepcock at the bottom of the radiator, and place it into a styrofoam coffee cup. Oil droplets floating on top of the green (or orange) coolant are easily seen. Or visualize oil by looking into the top of the radiator through the radiator cap.
Coolant infiltrating into and mixing with motor oil will permanently damage the engine (seizing it up through loss of lubrication), and must be prevented.
A leak from above the front suspension is, as physicians like to put it, "nonspecific", with the most likely cause a water pump seal or hose/hose connection.
A leak from near the fire wall will usually be a heater core hose, or hose connection.
A coolant leak on the same side of the engine as the water pump is a leaking water pump or water pump seal until proven otherwise.

To rule out everythng else, here's the 1999 Honda CR-V Troubleshooting Guide for Coolant Loss/Coolant Leaking:

Priority Action Part Type Cause
1 Inspect Water Pump - Worn, Cracked or Leaking Water Pump, or Water Pump gasket.
2 Inspect Head Gasket - Leaking Head Gasket.
3 Inspect Radiator - Leaking Radiator Hose(s).
4 Inspect Radiator Cap - Worn or Damaged Radiator Cap.
5 Inspect Radiator Hose - Ruptured, Cracked or Leaking Radiator Hose.
6 Inspect Freeze Plug - Leaking Freeze Plug(s).
7 Inspect Intake Manifold Gasket - Leaking, Worn, or Damaged Intake Manifold Gasket.
8 Inspect Water Outlet - Cracked, Leaking or Damaged Water Outlet.
9 Inspect Heater Control Valve - Leaking or Faulty Heater Control Valve.
10 Inspect Radiator Drain Pepcock - Loose, Damaged, or Faulty Radiator Drain Pepcock, or Pepcock O-ring.
11 Inspect Engine (DOMESTIC ONLY) - Cracked Cylinder Block Leaking Coolant into at least one Cylinder, causing white exhaust smoke.
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My 1999 Alero must have a leak somewhere because the thermostat gauge rises every few days. I put coolant in it at least 1 a week. I had a new water pump and thermostat put on it, but it is still...

CHECK AROUND WATER PUMP AREA.AND THERMOSTAT HOUSING FOR LEAKS.THE MECHANIC WHO PUT THE WATER PUMP ON MAY FORGOT TO PUT SEALANT ON BOTH SIDES OF THE WATER PUMP GASKET CAUSING LEAKS.LOOK AROUND THERMOSTAT HOUSING FOR LEAKING.IF THERMOSTAT SEAL WAS DAMAGE DURING INSTALLATION IT WILL CAUSE LEAKING.IF ALL LOOKS GOOD CHECK FOR COOLANT LEAKS AROUND RADIATOR .CHECK RADIATOR TOP AND BOTTOM HOSES FOR LEAKS AND CHECK HEATER PIPES AND HEATER CORES HOSES FOR LEAKS.IF ALL HOSES GOOD.CHECK FOR LEAKING CORE PLUGS.
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Leaking anti freeze

You need to isolated the location of the coolant leak. Check the radiator, hoses, and water pump for leaks. The water pump should have a vent or "weep" hole. If there is any coolant leaking from the hole, the water pump is defective. When checking the hoses, look for cracks or obvious signs of deterioration. Pay particular attention to areas where the hose clamps are located when looking for leaks. Overheating and coolant loss can also be caused by a faulty thermostat. The thing is that you need to find out where the problem is before it can be addressed properly. Hope this helped and best wishes.
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