Water leaking from above thermostat i believe help. 1995 Toyota 4Runner V6
I just changed my radiator with a brand new one. When i look under the car i see coolant leaking i just poured in. The leaks are coming from where the oil pan is kinda above it i believe its the thermostat if you follow the lower radiator hose the leaks are coming from the engine im not sure if it's the water pump or thermostat maybe one you guys know. Thank you
My car has 150000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi – finding coolant leaks like this requires a careful eye. Tight engine packaging, and the fact that slow leaks can evaporate quickly, make it more difficult to determine the source of the leak. A leaking hose connection at the thermostat, the thermostat housing or gasket itself, or the water pump, are all on pretty-much the same vertical path to the bottom of the engine. I recommend a coolant leak inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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When coolant leaks from the thermostat housing, it is generally because the thermostat is having issues. When the thermostat gets stuck in the closed position, the chance for a coolant leak becomes greater. A closed thermostat valve means that the engine is heating up to the optimal temperature.
Corrosion within the radiator is one of the leading reasons that coolant leaks. As the tubes get older and weaker, you may get sediment or debris inside that causes a leak. The sealing gasket between the tank and the radiator can also wear out, and that could lead to a leak.
The most common reasons a Toyota 4Runner has a coolant leak are loose hose connections, a broken radiator, or a failed water pump.
It may be a broken hose and/or a hole in the radiator. Solution: Check your hoses to see if any coolant is coming out. Replace the hose(s) if you notice coolant coming out of them. If you notice coolant leaking out of your thermostat that can be an easy fix.
Another tell-tale sign of a thermostat-related problem is a coolant leak. It`s not the thermostat itself that leaks; it contains no coolant. Instead, the source of the leak is often the gasket that prevents coolant from seeping out of the thermostat housing as it flows between the engine and the radiator.
A cracked engine block can cause a range of problems. Ultimately, since the circulation system that cools the engine is comparatively fragile, a cracked engine block will lead to coolant leaking out of the area it is needed and leaving the engine to overheat.
At this point, the leak is severe enough to reduce the coolant level in the engine, and this can cause temperature problems. Even if you add coolant to the cooling system, it will leak out of the leaking thermostat. As such, we recommend that you avoid driving your automobile if it starts to run too hot.
A thermostat stuck in the open position constantly pushes coolant into the engine and causes a lower operating temperature. Your temperature gauge will show a needle that barely increases or remains at the lowest setting.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Water leaking from above thermostat i believe help. 1995 Toyota 4Runner V6
ANSWER : Hi – finding coolant leaks like this requires a careful eye. Tight engine packaging, and the fact that slow leaks can evaporate quickly, make it more difficult to determine the source of the leak. A leaking hose connection at the thermostat, the thermostat housing or gasket itself, or the water pump, are all on pretty-much the same vertical path to the bottom of the engine. I recommend a coolant leak inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
I have a leak in the coolant system that I have narrowed to I believe is the water inlet tube off of the lower radiator hose.
ANSWER : First off, I would say it would be best to pressure test the cooling system to verify where the coolant is coming from. With the complexity of repairs to the cooling system on this vehicle, it may be worth the time spent to pressure test the system before tackling the replacement. Now then, as far as replacing the o-ring seal on the water pump inlet tube, it should really only require the removal of the bypass hose, lower radiator hose, and the two (or three, depending on manufacturing changes) mounting bolts that hold the inlet tube to the block. I personally would go ahead and replace the tube while I was there, instead of just the o-ring. Granted, this doesn’t mention what it will take to get down to the inlet pipe, but this is all it should take once you have access to it. If this is something that you feel you could use a hand with, consult with a certified mechanic, like those available at YourMechanic.com.
Is leaking water but the thermostat the water pump and the heater core is good but it’s slowly dripping water onto the ground
ANSWER : Based on your description, you may have a small leak somewhere in the connections to your radiator, water pump or to your engine. Often times water leaks start out small and develop over time increasing and decreasing depending on the temperature of the water. I would recommend having an expert from YourMechanic come to your home to diagnose and repair your cooling system.
Intake manifold came off replaced gaskets new water pump thermostat and put in barred leak still overheats
ANSWER : Hi there. Have you checked to see if the fans are coming on? Do they achieve both normal and high speed? Is there any noise or abnormal operation? There could also be an air pocket in the cooling system, or the thermostat installed backwards (it does happen). Does the engine boil over? Check the actual temperature of the engine with an infrared thermometer temperature gun and compare the readings to the combination meter gauge. The gauge or sensor could be inaccurate. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several technicians available that can assist you with a car is overheating inspection.
I think there is a leak and water is dripping? Can you fix water or oil leaks? Thanks.
ANSWER : Hi There,
Yes, we can fix coolant and oil leaks. Generally, if you are noticing a water leak, this would be coming from the radiator, water pump or any of the radiator hoses around the motor that may be going to or from the radiator. Generally, when a water pump is going bad, you may hear a bit of a whining sound combined with the pump leaking. The most common place for the water pump to leak from is the pulley shaft seal which is in the front of the pump where the shaft comes out of the pump housing. When the pump is leaking, it will typically cause the engine to overheat as well. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your water pump.
Yes, we can fix coolant and oil leaks. Generally, if you are noticing a water leak, this would be coming from the radiator, water pump or any of the radiator hoses around the motor that may be going to or from the radiator. Generally, when a water pump is going bad, you may hear a bit of a whining sound combined with the pump leaking. The most common place for the water pump to leak from is the pulley shaft seal which is in the front of the pump where the shaft comes out of the pump housing. When the pump is leaking, it will typically cause the engine to overheat as well. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your water pump.
Using Bar’s stop leak for timing chain cover leak
ANSWER : Stop leak products are generally an amateur, unprofessional solution to a TECHNICAL problem. Factory Service Manuals do NOT recommend or specify stop leak products BECAUSE such products are NOT considered to be an acceptable repair strategy, save for rare exceptions. The composition of your question clearly indicates that you understand that the OPTIMAL solution is to just fix the gasket(s) and you are simply seeking a stop gap (no pun intended) measure while you prepare for that repair. After having researched these products for decades and having tried a few, talked to manufacturers and so forth, I would suggest that you just let the vehicle leak until it was repaired assuming of course that oil is NOT leaking onto a hot manifold thus creating fire and health hazards. Of course, it is best to just simply prioritize the repair and one possibility insofar as the cost, as well as the diagnosis, is to get a second opinion from YourMechanic.
My water pump is leaking but I replaced timing belt and pump a year ago. Can I just replace the water pump this time?
ANSWER : Hello. You can just replace the water pump in this case. Although, the cost of just the timing belt is fairly negligible in comparison to the total labor of the job. My estimator says the water pump is a 6.5 hour job. Multiply that by whatever the shop rate is and you have the total labor without parts. You end up saving about $100 or less on parts if you only replace the pump.
The deciding factor will be the condition of the timing belt. If it has problems, you won’t be saving yourself any money by reusing it. In addition, there are seals and pulleys that may need to be replaced as well.
Assuming all the related parts were replaced the first time around, there isn’t a reason you can’t reuse them. I would say you should weigh the savings of reusing them against the actual condition of the parts. This is best determined after a complete disassembly. Keep in mind, time estimates will vary a bit depending on many factors. Either way, the labor is the largest cost.
If you would like to have the water pump replaced, a certified professional from YourMechanic can come to your car’s location to perform this service at your convenience.
I used stop leak to fix a slow leak in my water pump,it worked but the car went into limp mode after it.
ANSWER : Stop leak in the cooling system is likely to cause more problems than it will solve. Modern cooling systems are much more finely drawn and have far smaller passages than older cars, and stop leak will jam things up. I can’t think how it would make your car go into limp home mode however, unless it was a coolant level fault.Of course a code read is in order and that should tell the story. Meanwhile, it’s clear that you need to take care of that water pump problem It may appear to be fixed, but the leak will be back. If you want some help with this, you can Contact Your Mechanic. They can send a technician to your home or office who can read the codes on your Jaguar and tell you what this limp home thing is all about.
