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My 2007 Hino 268 is pushing coolant in to reservoir tank but not the other way around

I changed radiator, water pump, upper, lower hoses and thermostat but I am still loosing coolant from radiator while reserve tank is over flowing

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I have a 1992 Buick regal that overheats at speeds of 40 mile n hour it has a new radiator, thermos stat, has been flushed an filled and bled have not changed the water pump when it overheats all of m


It is more than likely your water pump. Can you run it in park with the radiator cap off. The cap on the radiator not the overflow tank. When the temp opens the thermostat you should see flow if the pump is good no flow it is probably bad. If you don't see flow check the upper hose for temp and the lower hose. If the upper line is barely warm and the lower hose is significantly hotter, it is either water pump or thermostat, but since you replaced the thermostat I would be back to water pump. BTW you should use either a contact thermometer or an infrared to check hoses, although it was done by hand in the old days.

Feb 28, 2013 | 1992 Buick Regal

2 Answers

2005 Chrysler Pacifica: Brothers and Sisters Help ME!!!! I had water pump & Timing done and now my upper radiator hose continue to pop-off. Please advised Carefully (As this is my only source of t


Usually, hoses pop off if the radiator/expansion tank cap is incorrect/broken. Find out if this "mechanic" changed the cap, if they did, get the old one back or get a replacement from the dealer. I have never gotten a dependable replacement from any parts stores. If they didn't change it, change it anyway and see what happens.

Mar 09, 2017 | 2005 Chrysler Pacifica Touring

1 Answer

I have replaced the the Thermostat on my Chrysler 300 with the 5.7 Hemi Engine. It still over heats. Is there more than one thermostat on thi engine?


You didn't state when it overheats, if it is while driving the fault can be : belt driving water pump slipping , lower radiator hose collapsing, most common is clogged radiator. Start the engine with the radiator cap off when it is COLD and observe the flow in side. If you see really fast flow of coolant you have the bottom portion of the radiator stopped up. The only way to know is to remove the radiator and have it flow tested.
A blown head gasket or cracked head will cause steam to come out of the exhaust, water in the oil (milky). If it is running hot while idling , check fan to see if it is turning as it should when it should. Older cars have fan clutches that go bad, newer ones have temp thermostats that go bad.

Apr 30, 2017 | Chrysler 300 Cars & Trucks

2 Answers

1988 b2200 is overheating--we've changed out the lower radiator hose, thermostat, and the upper hose is fine. Why is it overheating? Radiator, heat pump, or water pump?


!st check and make sure the water is flowing in the radiator, then check
the timeing, Mazda will run hot if the timeing is rong.

Jul 19, 2012 | 1988 Mazda B2200

2 Answers

Have changed the water pump, thermostat, radiator, radiator cap, all hoses. 2001 chevy venture, still running hot? How long does it take to bleed the cooling system?


If the system fills via an expansion tank, I would recommend removing the top hose from the radiator and filling the system by pouring the coolant in through the hose until it begins to flow out of the upper radiator port. Reconnect the hose and then fill the expansion tank. That should take care of it.

Jun 26, 2011 | 2001 Chevrolet Venture

1 Answer

2002 Jetta 1.8T blew 40A cooling fan fuse - overheated, destroyed 4 way cooling hose connector - replaced all- now it still runs very hot, inside temp reads 190 (but temp is much higher), cooling fans run...


Then replace the thermostat, because if on lower hose not hot and on upper hose scalding hot = antifreeze flow blocked by the thermostat wich remains closed!!!

Thermostat replacing:


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Aug 27, 2010 | 2002 Volkswagen Jetta TDI

2 Answers

Overheating 94 tercel


Overheating can be the result of several things including: No coolant, stuck thermostat, cracked head, blown head gasket, bad water pump, cracked radiator side tanks, and poin holes in one or more hoses.

Start with the easiest things first. Check coolant level, if it's low you need to find out why. If it's at a normal level you know the coolant is not circulating through the motor. To test this run the car to temperature then feel the upper radiator hose, it should be hot and firm to the touch. Next feel the lower radiator hose it to should be hot and firm to the touch. If it's not the coolant isn't flowing through the motor which is the result of a stuck thermostat.

If the thermostat checks out ok crawl under the car and check all the connections between hoses/motor/radiator. Look at the side tanks of the radiator. If there's a carack in one they will only leak while the system is under pressure. Next check to make sure the water pump is circulating the coolant and not leaking. A siezed water pump will usually stop the pulley from turning resulting in a broken belt.

NExt look around the area of the head gaskets for signs of leakage, again this will only leak while the system is under pressure. Check the oil, if it looks milky there's coolant in it which is a sure sign of a gasket failure or cracked head. Good luck.

Nov 01, 2009 | 1994 Toyota Tercel

4 Answers

1991 honda accord is overheating. Installed new radiator because of leak and the car started overheating because of cracked heater hose. Installed new hose and still overheating. Bottom radiator hose is...


When the car is completely cool,check the electric fan(s) for smooth rotation.

Clean/check/change the thermo sensor,contact and wire.

===

Excavate air pocket in coolant system / check for head gasket leak

This test will kill two birds with one stone.

===

MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!

RAN THIS TEST IN A WELL VENTILATED AREA ONLY!

You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!

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Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .

Top of the coolant reserve tank

Let it ran for 10-15 minutes.

Monitor for air pockets escaping from coolant reserve tank.

Small amount of bubbles is OK at 1-5 minute mark

After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.

If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.

Give the thermostat host few gentle taps.

If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.

Let engine cold down and top off coolant reserve tank.

Start monitor for coolant lost

===

A coolant flush is require every 2 years or 24,000 miles.

I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.

Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.

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Please post more information by clicking the comment link on the top right corner.

DON'T FORGET to RATE ME if my tip is helpful to you!

Oct 17, 2009 | 1991 Honda Accord

2 Answers

Water is flowing changed the thermostat and the


are you sure you bleeded the air out correctly. These are a pain sometimes. Water pump blades are know to fall apart and this could also clog up the system almost anywhere

Jul 17, 2009 | 1995 Jeep Grand Cherokee

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