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Waterpump inlet? which hose - 1999 Chevrolet Silverado 1500

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Coolant flow is as follows... from rad to lower rad hose, through water pump , through engine to thermostat, to upper rad hose and back through rad.

Posted on Jul 31, 2009

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Posted on Jan 02, 2017

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Heater hose diagram


It don't matter where you put your heater hoses, coolent just goes in one and out the other, it don't matter whatsoever. Your problem is that your heater hoses are clogged up. Check where your hoses connected to your engine for blockages. If alot of corrosion is present, you stand a very good chance that your heater core may be clogged up as well. Wouldn't be a bad idea to clean out your coolent system with a good quality flush. Just to show you what i have found, check thes pictures, check red areas for blockages, and "c" is the inlet, "d" is outlet.(don't see why it matters tho)

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make sure to check other end of hoses for blockages. inlet side goes to closest connection to waterpump.

Dec 11, 2013 | 2004 Kia Sorento

1 Answer

Replace thermostat


Unfortunately, you can't replace the thermostat by itself. It is part of an overall assembly which includes the waterpump. Below are the instructions:
  • Drain the cooling system to a level below the thermostat.
  • Remove the radiator outlet hose.
  • Remove the water pump inlet bolts.
  • Remove the water pump inlet and thermostat from the water pump.
To install:
  • Install the thermostat and thermostat housing to the water pump.
  • Install the thermostat housing bolts. Tighten the bolts to 11 ft. lbs. (15 Nm).
  • Install the radiator outlet hose.
  • Properly fill the engine cooling system and check for leaks.

Nov 01, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

How to change waterpump on 91 lexus ls 400


DRAIN COOLANT SYSTEM.DISCONNECT THE RADIATOR INLET HOSE FROM INLET PIPE. REMOVE THE TIMING BELT FROM THE WATER PUMP PULLEY. REMOVE THE RIGHT SIDE IGNITION COIL.REMOVE THE WATER INLET HOUSING AND THERMOSTAT.REMOVE THE MOUNTING BOLTS AND STUDS. LIFT OUT THE WATER PUMP BY CAREFULLY PRYING BETWEEN THE PUMP AND THE CYLINDER HEAD. REMOVE ALL THE OLD PACKING AND CLEAN THE MOUNTING SURFACES. INSTALL NEW SEAL PACKING TO THE WATER PUMP GROOVE AND A NEW O - RING TO THE WATER BYPASS PIPE.INSTALL THE TIMING BELT AND CONNECT THE INLET HOSE TO THE INLET PIPE.THEN REFILL THE COOLING SYSTEM. RUN THE ENGINE CHECK FOR LEAKS.

Sep 03, 2011 | Lexus LS 400 Cars & Trucks

1 Answer

Bottom radiator hose leaking on waterpump housing on nipple


Change the hose it might be perished and the hose clip. The waterpump may have corrosion on the hose fitting. If so check your antifreeze.

Aug 14, 2011 | 2000 Dodge Caravan

3 Answers

Ford Focus 2001 6v ztech. My thermostat keeps going up as long as my foot is on the break. When I start going again the needle goes down. Today the alert light came on while the needle was up in the red. I...


Although what you describe does tend to indicate a waterpump problem, the fact that you saw fluid around the upper radiator hose makes me think you may have a leak there. There are several ways to diagnose this problem.
  1. Check the upper radiator hose; it's possible it has a pin hole (squirt soapy water on it while the car is running and look for bubbles) it could also leak around the clamp which is quite common.
  2. With the car running, check for white smoke from the exhaust; this is a classic indicator that you have a blown head gasket
  3. If you've ruled out a leaking hose and see no evidence of a bad head gasket, then what you stated would definitely indicate a bad waterpump. When a waterpump is on it's way out, it will circulate just enough coolant through the motor while you are under way and as soon as you come to a stop, you will see the temp rise and start to overheat.
I hope you find the information I provided to be helpful. Best of luck!
Greg

Mar 04, 2011 | 2001 Ford Focus

1 Answer

1993 E-150 which is leaking antifreeze. I have replaced the waterpump, waterpump gasket, the thermostat, the thermostat gasket and all hoses; however, the leak continues. It only leaks after the engine...


Hi, it could be your intake gaskets leaking,or a upper freeze plug you can go to your local auto parts store that has loaner tools and use a coolant pressure tester and put pressure on system do not put more pressure then your radaitor cap says . When you pressure test system it will show you where your leak is with out the van running.If i can help you any more just re post.

Jan 08, 2011 | 1993 Ford Econoline

1 Answer

How to I change the thermastat


The manual says it is on the lower left side of the engine near the front, at the inlet to the waterpump. It is in a housing that brings the lower radiator hose and heater return hose. The removal procedure is:
remove negative side of remote jumper terminal (disconnects battery)
  • drain cooling system
  • remove accessory drive belt in prep to remove generator
  • raise vehicle
  • remove generator attachment bolts and set generator aside
  • remove hoses from housing
  • remove housing bolts
  • remove thermostat and housing

Install is the reverse. Tighten housing bolts to 105 inch-pounds.
I haven't worked on this engine, just passing along what the manual describes.
I hope it works out well for you.

May 22, 2010 | 1999 Chrysler Concorde

1 Answer

Replaced thermostat waterpump,timing belt,now no heat inside car


i would check to see if the vent/flap in the heat duct is working properly
if it is stuck than it will only blow cold air directly from the out side vent
and not through the heater core

Dec 28, 2009 | 2003 Saturn VUE

1 Answer

Special tool to remove water pump on 1999 cadillac deville


remove air filter housing,remove secondary air check valve bracket,if equipped,remove lower radiator hose from the thermostat housing,remove waterpump bypass hose, remove waterpump cover,use special tool to remove waterpump,install a new o-ring inwaterpump housing

Apr 10, 2009 | 1999 Cadillac DeVille

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