Question about 1999 Chevrolet Blazer

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Cooling fluid leaking & squealing noise. Fluid comes from area near cooling fan. Is the water pump difficult to replace. 99 Blazer 4.3 4WD.

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The water pump isnt hard to replce on your truck. Basicly, what you see is what you get. Drain the radiator first, then take off the fan, the serpentine belt, 4 small bolts on the pulley and the pump is fully exposed. Just make sure the old gaskets are gone and the mounting surfaces are clean and dry.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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When replacing the water pump on a 1997 toyota camry 2.7, do you have to remove the harmonic balancer?


no
2RZ-FE and 3RZ-FE Engines
  1. Disconnect the negative battery cable.
  2. Drain the cooling system.
  3. If equipped with an air conditioning compressor or power steering pump drive belts, it may be necessary to loosen the adjusting bolt, remove the drive belt(s) and move the component(s) out of the way.
  4. Remove the fluid coupling with the fan and water pump pulley.
  5. Remove the water pump.
To install:
  1. Clean the gasket mounting surfaces.
  2. Install the replacement water pump using a new gasket.
  3. Install the water pump pulley and fluid coupling with the fan.
  4. Install the removed engine drive belts.
  5. Fill the cooling system.
  6. Connect the negative battery cable. Start the engine and check for leaks.
  7. Bleed the cooling system.

Aug 13, 2017 | Toyota Cars & Trucks

1 Answer

My 1999 ford RAnger has heat but the fan makes alot of noise and does not blow out the heat and the trucks gauge will go hot. What would the issue? Heater core or mayb just the fuse?


Diagnose Cooling Fan Clutch On engines with belt-driven cooling fans, a fan clutch is often used to save energy and reduce noise. The fan clutch disengages slows or disengages the engine's cooling fan when extra cooling isn't needed. The fan pulls air through the radiator and air conditioning condenser when the vehicle isn't moving fast enough to provide adequate airflow for cooling. A fan can eat up anywhere from a couple of horsepower up to 12 or 15 hp on a big V8, so by reducing the parasitic horsepower loss on the engine the fan clutch makes a noticeable difference in fuel economy

TWO TYPES OF FAN CLUTCHES basic types of fan clutches: thermal and non-thermal (also called "torque limiting Thermal fan clutches have a temperature-sensitive bimetal coil spring on the front that reacts to temperature changes. When the air coming through the radiator is hot, the spring expands and opens an internal valve that reduces clutch slippage. This causes the fan to spin faster for increased cooling. As the air cools, the spring contracts and closes the valve. This increases the amount of clutch slippage, allowing the fan to slow down and decrease cooling FAN CLUTCH OPERATION

The clutch consists of a fluid coupling filled with a silicone based oil. In the cutaway view at the left, the area between the teeth on the clutch plates is filled with silicone fluid. An internal valve opens and closes a passage between the main fluid cavity and a fluid reservoir. When the passage is open, fluid enters the clutch and makes the fan to turn faster. When the valve is shut, fluid flows back to the reservoir but doesn't return, causing the clutch to slip and the fan to turn more slowly.
The non-thermal (torque limiting) fan clutch doesn't have a temperature sensing capability. It reacts only to speed, slipping to limit maximum fan speed to about 1200 to 2200 rpm depending on the application.

FAN CLUTCH PROBLEMS

A slipping fan clutch is often overlooked as the cause of an engine overheating problem.
As a fan clutch ages, fluid deterioration gradually causes an increase in slippage (about 200 rpm per year). After a number of years of service, the clutch may slip so badly that the fan can't keep up with the cooling needs of the engine and the engine overheats. At this point, replacement is often necessary.
Other signs of fan cluch failure would include any looseness in the clutch (check for fan wobble), or oil streaks radiating outward from the clutch hub.
If the clutch is binding, the fan may not release causing excessive cooling and noise, especially at highway speeds

CHECKING THE FAN CLUTCH

A good clutch should offer a certain amount of resistance when spun by hand (engine off, of course!). But if the fan spins with little resistance (more than 1 to 1-1/2 turns), the fan clutch is slipping too much and needs to be replaced.
If the fan binds, does not turn or offers a lot of resistance, it has seized and also needs to be replaced.
Fan speed can also be checked with an optical tachometer, by marking one of the fan blades with chalk and using a timing light to observe speed changes, and/or listening for changes in fan noise as engine speed changes.
You should also try to wiggle the fan blades by hand. If there is any wobble in the fan, there is a bad bearing in the fan clutch, or a worn bearing on the water pump shaft. A bad water pump bearing will usually cause the water pump to leak and/or make noise, but not always. Remove the fan clutch and see if the play is in the water pump shaft. If it feels tight (no play or wobble), replace the fan clutch.

FAN CLUTCH REPLACEMENT

Many experts say it is a good idea to replace the fan clutch at the same time as the water pump if the water pump has failed. The reason is because both age at about the same rate, so if the water pump has failed, the fan clutch may also fail soon. As as we mentioned earlier, a high mileage fan clutch may be slipping excessively increasing the risk of overheating.
When you buy a replacement fan clutch, make sure you get the same type (thermal or nonthermal) as the original. You can always upgrade from a nonthermal to a more efficient thermal fan clutch, but never the reverse. Or, you can get rid of the fan and clutch altogether and install an aftermarket electric fan kit to cool the radiator.

Sep 28, 2016 | Ford Cars & Trucks

1 Answer

Trying to find the problem i as soon as i feel my power steering tank up it leaks all out w n a hr an it runs my cooling fan hydro by a line but i looked an looked on all the lines an cannot find the leak...


Start by checking if the cooling lines run into the radiator. There may be a leak internally on the radiator in the lines run through it. Also check to see if the fluid is leaking from the center shaft on the pulley on the pump. If your power steering fluid is leaking into the radiator your antifreeze will look like a cloudy pink color the same as if your transmission fluid leaks into the radiator. If it is, replace the radiator. If it is leaking out of the shaft replace the power steering pump.

Apr 15, 2017 | Cars & Trucks

1 Answer

My radiator fan is not working


For radiator replacement procedure and radiator problem troubleshooting. I suggest you to click the link below and follow the detailed procedure :-----

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How to Replace Engine cooling Fan on car? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-engine-cooling-fan-on.html

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Engine makes noise and Cooling Fan belt Breaks? http://howtobyme.blogspot.com/2011/12/engine-makes-noise-and-cooling-fan-belt.html

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Replace Fan Relay but still Radiator cooling fans not working? http://schematicsdiagram.blogspot.com/2011/12/replace-fan-relay-but-still-radiator.html

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Cooling fan relays location? http://technoanswers.blogspot.in/2012/02/cooling-fan-relays-location-on-1998.html----------DIC says "COOLING FAN FAULT"? http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
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How to replace radiator Cooling Fan?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cooling-fan-on-acura-car.html

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Engine cooling components working?

http://repairhelpcenter.blogspot.com/2011/11/engine-cooling-components-working.html

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How does Vehicles Engine cooling system works? http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html

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cooling fan not working http://schematicsdiagram.blogspot.in/2012/02/hyundai-sonata-cooling-fan-not-working.html----------- Fuel pump relay and cooling fan relay troubleshooting? http://repairhelpcenter.blogspot.com/2011/10/fuel-pump-relay-and-cooling-fan-relay.html

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Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

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Transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html


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How to replace Radiator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-audi-and-vw.html

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HOW TO REPLACE AN UPPER RADIATOR HOSE

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-upper-radiator-hose.html

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HOW TO REPLACE A LOWER RADIATOR HOSE

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-lower-radiator-hose.html

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How to replace Radiator on Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-radiator-on-acura-car.html

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How to flush cars radiator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-flush-cars-radiator.html

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HOW TO PRESSURE TEST A RADIATOR AND CAP

http://schematicsdiagram.blogspot.com/2011/07/how-to-pressure-test-radiator-and-cap.html

----------------
HOW TO REPLACE A RADIATOR

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-radiator.html
------------------

HOW TO REPLACE A RADIATOR SUPPORT

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-radiator-support.html

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This details will help.

Thanks.

Feb 01, 2012 | 1997 Mercury Cougar XR7

1 Answer

My 2004 golf is overheating fast, is it the thermostst?


It could be the thermostat. It could also be the water pump, radiator, cooling fan or a hundred other things. The first thing you need to do is make sure the engine is cool, then take the radiator cap off and check the fluid level. Check the overflow container as well to see if it has the proper level of fluid in it. If you can see the fluid in the radiator near the top then it could very well be a siezed thermostat. If you can't see the fluid level in the radiator, then fill it and the overflow container to the proper level and start the engine with the radiator cap OFF. Look for any obvious leaks under the car and around the engine and radiator, but keep your eye on the temp gauge. Water pumps have a built in warning device called a "weep hole" which will leak water out to let you know that it's time to replace them. If the radiator appears full and the cooling fan comes on, and the engine still overheats, then it is definately the thermostat. A rapidly overheating engine would constitute no water in the engine block itself which is very dangerous for your engine. If the engine remains too hot for too long, you could end up with much more serious problems.

Aug 17, 2011 | 2004 Volkswagen Golf

1 Answer

Leaking antifreeze, but not from the water pump? fluid is rust colored.


What you do is pressure test the cooling system. The pressure will cause fluid or air to come out at your leak. The rust does not sound good. Fix the leak (s), flush system, and replace coolant. Consider "mechanic in a can" rust inhibiter, but stay away from stop leak, fix leaks properly. the cooling system just need to work correctly, it builds up near 15 lbs of pressure and stop leak cannot properly stop that pressure.

Dec 18, 2010 | 1987 Nissan Pickup

2 Answers

Engine is running hot


Check coolant reservoir level, check cooling fan if working, check if no leaks on the water pump...If engine newly installed, chances are drive belts are not installed properly.

Oct 07, 2010 | 1986 Nissan 300ZX

2 Answers

1999 Olds Alero. Low coolant light comes on and stays on even though its full. Starts running hot to the 3/4 mark. When the heater is turned on it cools off. Could this be the thermostat or the water pump.


TAKE RADIATOR CAP OFF WITH ENGINE COLD AND CHECK WATER ..MAKE SURE RADIATOR NOT BLOCKED,,PLASTIC BAG ETC. THIS SOUNDS LIKE LOW WATER OR RADIATOR ..STOPPED UP INSIDE ..IF YOU HAVE GOOD HEAT IT'S FULL OF WATER. REPLACE T STAT B4 RADIATOR..IT'S CHEAPER. ALSO CHECK FOR RADIATOR COOLING FAN OPPERATION..I,M RULING OUT THE WATER PUMP.

Mar 20, 2010 | 1999 Oldsmobile Alero

2 Answers

The car keeps overheating there is no leaks but the car always need fluid the car makes a little rattling noise but it doesnt sound like the heads


CHECK AROUND WATER PUMP AREA LOOK FOR SIGNS OF ANTIFREEZE LEAKS AT WEEP HOLE ON WATER PUMP.SOUND LIKE WATER PUMP SHAFT BEARING GONE.

Nov 10, 2009 | 2003 Nissan Altima

4 Answers

2002 Lincoln LS overheating


The cooling fan on the LS-V8 is hydraulic yes. But it also has a pressure switch on the pump that drives the fan. It is controlled by the temperature sensor. All these things must be taken into account. But the whining sound my lead me to believe that the pump is either low on fluid or is wearing out. The fluid the fan pump uses is the same as the power steering pump container so check it first. The same thing happened to my wife's Lincoln. I replaced the fan as well because everybody told me to do that but it didn't work. I found out that the fan is just a hydraulic motor in reverse it only spins as fast as the pump makes it spin and that is controlled by the temp. sensors. When the engine get's hotter the pressure goes up and the fan spins faster. This adds more power to the engine when it's running cooler because the fan doesn't have to spin at max speed. So good luck. I hope this has solved your problem.

Apr 01, 2009 | 2002 Lincoln LS

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