Question about 1994 Honda Passport

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I have a coolant leak on the line that comes off the bottom of the radiator and goes into a metal line that heads under the motor behind tha altanator

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If the coolant is leaking then there is nothing one can do except replace the hose that is leaking. Please do that.

Posted on Jun 05, 2010

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Where is the freeze plug located at on a 1989 cressida


The freezer plug is located on the left side of the motor under the exhaust manifold towards the back.I think its visible if you take off the metal heat shield that's on the manifold or maybe from the bottom if you lift the car.If its not leaking from there than it could be coming from the back of the motor. There are hoses, a EGR cooling plate and metal water lines on the motor.

Jul 09, 2014 | 1989 Toyota Cressida

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Losing coolant with no visible leaks 2005 jeep liberty engine 3.7


Did you listen to the radiator too see if it gurgles when filling? When filling the gurgling tells you there are no air or coolant leaks in the engine much the same as an upside down soda bottle gurgles when turned upside down. Also look in the radiator too see if bubbles are coming from the bottom of the radiator while running at normal operating temperature with the cap off.? If you see bubbles coming from the bottom, you have a leaking head gasket. This can and will happen without the coolant leaking into oil, and without oil leaking into coolant. The gasket leaks right near the cylinder and sucks the coolant into the cylinder on the intake stroke, and blows it back into the radiator on compression stroke. This is why the coolant bubbles up from the bottom. The coolant that gets sucked in gets vaporized and comes out the exhaust. Loosing coolant ?? This is where it is going if no leaks under or around around the vehicle.Good luck I hope this solves your problem. Please post a solved comment on fixya, so I receive credit for the solve.

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Check and see if head gasket is leaking.

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Mysterious coolant leak


Check out this few help links,in related to this types of problem.Click the link below :----Transmission fluid gets into radiator?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fluid-gets-into-radiator.html

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The plastic housing which goes to the upper radiator hose is cracked and leaking?

http://schematicsdiagram.blogspot.com/2011/12/plastic-housing-which-goes-to-upper.html

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Radiator leaking? http://repairhelpcenter.blogspot.com/2011/12/radiator-leaking.html
--------Car water leak around the Starter area and Bell Housing? http://schematicsdiagram.blogspot.com/2011/12/car-water-leak-around-starter-area-and.html
--------Leaking head gaskets? http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html
---------This will help.Thanks.

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1 Answer

Antifreezes leaking from bottom of honda accord


If there is oil in it also its very bad. There could be numerous cause for this. Little and big. You need to narrow down where the coolant is coming from. Most of the time, with coolant leaks, it drips off the block, or the bottom of the radiator. It could be a cracked radiator, a clogged radiator, bad coolant line or lines, bad head gasket, ect. Where the coolant is coming from is necessary to diagnose the problem.

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Radiator fluid leaking, not from radiator or hoses going into engine block. Comes out from above transmission pan.


If the leak is back there? sounds like an intake gasket or head gasket if you ruled out the hoses

Jun 11, 2010 | 2000 Ford Taurus

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Loosing coolant no visible leaks about 1/2 gallon every 100 miles


How To Find & Fix Coolant Leaks

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WHERE COOLANT LEAKS OCCUR
Coolant leaks can occur anywhere in the cooling system. Nine out of ten times, coolant leaks are easy to find because the coolant can be seen dripping, spraying, seeping or bubbling from the leaky component. Open the hood and visually inspect the engine and cooling system for any sign of liquid leaking from the engine, radiator or hoses. The color of the coolant may be green, orange or yellow depending on the type of antifreeze in the system. The most common places where coolant may be leaking are:
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.

Freeze plugs -- These are the casting plugs or expansion plugs in the sides of the engine block and/or cylinder head. The flat steel plugs corroded from the inside out, and may develop leaks that are hard to see because of the plug's location behind the exhaust manifold, engine mount or other engine accessories. On V6 and V8 blocks, the plugs are most easily inspected from underneath the vehicle.

Heater Core -- The heater core is located inside the heating ventilation and air conditioning (HVAC) unit under the dash. It is out of sight so you cannot see a leak directly. But if the heater core is leaking (or a hose connection to the heater core is leaking), coolant will be seeping out of the bottom of the HVAC unit and dripping on the floor inside the passenger compartment. Look for stains or wet spots on the bottom of the plastic HVAC case, or on the passenger side floor.

Intake Manifold gasket -- The gasket that seals the intake manifold to the cylinder heads may leak and allow coolant to enter the intake port, crankcase or dribble down the outside of the engine. Some engines such as General Motors 3.1L and 3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for leaky intake manifold gaskets. The intake manifold gaskets on these engines are plastic and often fail at 50,000 to 80,000 miles. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4.0L V6 engines.

INTERNAL COOLANT LEAKS
There are the worst kind of coolant leaks for two reasons. One is that they are impossible to see because they are hidden inside the engine. The other is that internal coolant leaks can be very expensive to repair.

Bad head gasket --Internal coolant leaks are most often due to a bad head gasket. The head gasket may leak coolant into a cylinder, or into the crankcase. Coolant leaks into the crankcase dilute the oil and can damage the bearings in your engine. A head gasket leaking coolant into a cylinder can foul the spark plug, and create a lot of white smoke in the exhaust. Adding sealer to the cooling system may plug the leak if it is not too bad, but eventually the head gasket will have to be replaced.

If you suspect a head gasket leak, have the cooling system pressure tested. If it fails to hold pressure, there is an internal leak. A "block tester" can also be used to diagnose a leaky head gasket. This device draws air from the cooling system into a chamber that contains a special blue colored leak detection liquid. Combustion gases will react with the liquid and cause it to change color from blue to green if the head gasket is leaking.

Head gasket failures are often the result of engine overheating (which may have occurred because of a coolant leak elsewhere in the cooling system, a bad thermostat, or an electric cooling fan not working). When the engine overheats, thermal expansion can crush and damage portions of the head gasket. This damaged areas may then start to leak combustion pressure and/or coolant.

Cracked Head or Block -- Internal coolant leaks can also occur if the cylinder head or engine block has a crack in a cooling jacket. A combustion chamber leak in the cylinder head or block will leak coolant into the cylinder. This dilutes the oil on the cylinder walls and can damage the piston and rings. If the coolant contains silicates (conventional green antifreeze), it can also foul the oxygen sensor and catalytic converter. If enough coolant leaks into the cylinder (as when the engine is sitting overnight), it may even hydro-lock the engine and prevent it from cranking when you try to start it. Internal leaks such as these can be diagnosed by pressure testing the cooling system or using a block checker.

A coolant leak into the crankcase is also bad news because it can damage the bearings. Coolant leaking into the crankcase will make the oil level on the dipstick appear to be higher than normal. The oil may also appear frothy, muddy or discolored because of the coolant contamination.

Leaky ATF oil cooler -- Internal coolant leakage can also occur in the automatic transmission fluid oil cooler inside the radiator. On most vehicles with automatic transmissions, ATF is routed through an oil cooler inside the radiator. If the tubing leaks, coolant can enter the transmission lines, contaminate the fluid and ruin the transmission. Red or brown drops of oil in the coolant would be a symptom of such a leak. Because the oil cooler is inside the radiator, the radiator must be replaced to eliminate the problem. The transmission fluid should also be changed.

continue...

Mar 12, 2010 | 1998 Oldsmobile 88

1 Answer

How to replace metal coolant line behind engine heading to rear heater. It is spraying coolant when engine is turned on. The line starts under the passenger side floorboard and goes up behind the engine....


If you can see a small hole , and you can get to it, you may want to try to repair this there are products out there that dry in seconds, and are strong as hell.

I used duramix to seal a rear main seal , 2,000 miles later it still isnt leaking, its worth the time saved and agg trying to reaplace. Duramix - look this up on line, it may be available , I got some from a friend who works at a body shop.This stuff is amazing

Jul 27, 2009 | 1999 Plymouth Grand Voyager

2 Answers

Leak


it is most likely the hose that goes into the heater core next to the firewall hard to see it though. The things have a tendency to leak form the bottom of the line. more so when on, and circulation less.

Oct 14, 2008 | 1995 Ford Explorer

2 Answers

1993 Mercury Sable, white smoke, overheating


Good Day,

White some indicated that coolant is burning off. It could just be a simple leak which is burning off of the hot motor. It could also be a bad head gasket(probably what you don't wanna hear), One indication that it is the head gasket is white smoke coming out of the exhaust, this happens as coolant gets into the oil and is burned off then exhausted out the back. Possible causes for the overheating include, low coolant, coolant leak, thermostat, water pump and or water pump belt, or head gasket.

If I were you I would drain and flush the radiator, then fill it with new coolant, and change the thermostat, provided you have no white smoke coming out the exhaust.

hope this helps for now

Jul 05, 2008 | 1993 Mercury Sable

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