Question about 2003 Hummer H2

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Coolant leak underneath, 03 h2. could thhis be a water pump since i couldnt see any leak from radiator or any hoses

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  • trisbran1415 Feb 27, 2009

    .I just looked underneath and it looks like its the water pump gasket. thanks for the tip.

  • trisbran1415 Feb 27, 2009

    looks like i need to re-place my water pump gasket to fix the leak does anyone done this before any tip would help.

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Mine was an ever so slighty leak. Get a small mirror and flaslight and look underneath the wather pump snout for discoloration from coolan leaking from the weap hole. that is where mine was and I replaced the pump. Check your belt condition and tensioners while you have it apart. The upper temsioner is cheal and has to be removed anyway to do this.

Posted on Jul 31, 2009

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Could be the overflow canister or a seal in the front of the engine. Have the system pressure tested to be sure of the origin.

Posted on Feb 27, 2009

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Steady coolant leak but reservr stays full 03 buick rendevous


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Car pouring coolant from underneath the radiator


Can be several things. Bad Radiator, Bad hoses on radiator, or nearby water pump is leaking.

They make a Radiator pressure tester which will put pressure in the system so you can see where the leak is coming from.

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Possibility of a cracked block. how can i be sure/


Vehicles: Any with the above symptoms

A cracked cylinder block will cause either:
(a) motor oil contamination of engine coolant
(b) coolant contamination of motor oil
(c) white exhaust smoke, due to coolant seeping into one or more cylinders.
(d) more than one of the above
(e) all of the above

Oil infiltrating into coolant is easy to see - drain some coolant out through the pepcock at the bottom of the radiator, and place it into a styrofoam coffee cup. Oil droplets floating on top of the green (or orange) coolant are easily seen. Or visualize oil by looking into the top of the radiator through the radiator cap.
Coolant infiltrating into and mixing with motor oil will permanently damage the engine (seizing it up through loss of lubrication), and must be prevented.
A leak from above the front suspension is, as physicians like to put it, "nonspecific", with the most likely cause a water pump seal or hose/hose connection.
A leak from near the fire wall will usually be a heater core hose, or hose connection.
A coolant leak on the same side of the engine as the water pump is a leaking water pump or water pump seal until proven otherwise.

To rule out everythng else, here's the 1999 Honda CR-V Troubleshooting Guide for Coolant Loss/Coolant Leaking:

Priority Action Part Type Cause
1 Inspect Water Pump - Worn, Cracked or Leaking Water Pump, or Water Pump gasket.
2 Inspect Head Gasket - Leaking Head Gasket.
3 Inspect Radiator - Leaking Radiator Hose(s).
4 Inspect Radiator Cap - Worn or Damaged Radiator Cap.
5 Inspect Radiator Hose - Ruptured, Cracked or Leaking Radiator Hose.
6 Inspect Freeze Plug - Leaking Freeze Plug(s).
7 Inspect Intake Manifold Gasket - Leaking, Worn, or Damaged Intake Manifold Gasket.
8 Inspect Water Outlet - Cracked, Leaking or Damaged Water Outlet.
9 Inspect Heater Control Valve - Leaking or Faulty Heater Control Valve.
10 Inspect Radiator Drain Pepcock - Loose, Damaged, or Faulty Radiator Drain Pepcock, or Pepcock O-ring.
11 Inspect Engine (DOMESTIC ONLY) - Cracked Cylinder Block Leaking Coolant into at least one Cylinder, causing white exhaust smoke.

Dec 03, 2011 | 1999 Honda CR-V

1 Answer

I had refilled coolant yesterday. Today, coolant is empty and engine gets very smokey.


Always check your hoses for leaks. Check also if your radiator has water while engine is shut off. Add water to your radiator and add the coolant in the reservoir if its empty. Start it and observe your engine while running and check the hoses if anything is leaking. Check underneath of the car if something is dripping. Observe your temp gauge if it rises. If you don't find anything leaking, you could check your radiator only after you let the engine cool down. If the water is drained inside the radiator, then the radiator could be busted. If you have a perfectly fine radiator and the hoses do not leak, then it could be the water pump that's defective. If you are unsure about the problem then have it checked in your local dealership or your friendly neighborhood mechanic.

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I have 2001 alero. Yesterday the coolant light came on and the engine just died. Any ideas maybe fuel pump or timing belt or could it be the water pump


IF LOW COOLANT LIGHT CAME ON ENGINE SHUT OFF BECAUSE IT GOT TOO HOT AND OVER HEATED.WHEN YOU HAVE LOW COOLANT.YOU COULD HAVE LEAKING RADIATOR.YOU COULD HAVE LEAKING RADIATOR HOSES AND WATER PUMP. ADD MORE COOLANT IN CAR RADIATOR UNTIL YOU AT FULL COLD MARK ON THE OVER FLOW COOLANT TANK START THE CAR LET IDLE UNTIL ENGINE GET OPERATING TEMPERATURE.RAISE YOUR HOOD LOOK FOR LEAKS THE RADIATOR PRESSURE WILL PUSH COOLANT OUT WHERE LEAKS COULD BE.LOOK AROUND RADIATOR AND COOLANT HOSES.LOOK AT WATER PUMP.IF YOU SEE COOLANT LEAKING AT WATER PUMP REPLACE IT.

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1 Answer

Water dripping right front underneath


Is what the liquid plain water or coolant (water mixed with antifreeze). touch and smell the liquid, no smell = water, antifreeze smell and oily feel = coolant.
If plain water, could be Air Condition condensation dripping from condensation drain which is normal. (this drain is usually located near the center of the vehicle).
If coolant, could be leak(s) from: radiator, radiator hose, heater hose, water pump, engine freeze plug. A coolant system pressure test should show what is leaking.

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1 Answer

Leaking coolant. Not from hoses or radiator. Seems


you are looking at a water pump problem, have fun

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1 Answer

I have coolant leaking from underneath my 1998 Chevrolet Lumina


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1 Answer

My H2 is making Chocolate Milk Coolant!


The radiator has an internal trans cooler that must be leaking, the radiator needs to be replaced and the cooling system flushed of all the trans fluid. Usually the radiator hoses and hoses going to the heater core will need to be replaced because the trans fluid will soften the rubber and make them swell. Good luck, Honda Al

May 19, 2009 | 2003 Hummer H2

1 Answer

Removal and installation of the water pump


3.0L or 3.8L engine?

please rate as fixed if this solves your issue.

Section 03-01B: Engine, 3.8L 1996 Windstar Workshop Manual
IN-VEHICLE SERVICE Water Pump SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Fuel Line Disconnect Tool Set T90T-9550-S
Removal
  1. Drain engine cooling system. Refer to Section 03-03 .
  1. Loosen drive belt tensioner (6B209) and remove drive belt (8620). Refer to Section 03-05 .
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. Disconnect lower radiator hose (8286) from radiator lower hose tube (8291) and radiator (8005).
  1. Disconnect radiator lower hose tube from water pump (8501).
  1. Remove lower nut on both front engine support insulators (6038).
  1. Lower vehicle.
  1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
  1. Remove generator (GEN) (10346) from power steering pump support (3C511).
  1. Position drain pan and disconnect power steering pressure line from power steering pump (3A674) using Fuel Line Disconnect Tool Set T90T-9550-S.
  1. Remove power steering reservoir filler cap.
  1. stw~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: If using a prying device to assist in water pump removal, be careful not to damage the mating surfaces.
    Disconnect water bypass hose (8597) and oil cooler hose (6B850) from heater water outlet tube (18663).
  1. Remove retaining bolts and disconnect heater water outlet tube from water pump.
  1. Remove A/C bracket brace.
  1. Attach engine lifting eye to left-hand (front) exhaust manifold (9430).
  1. Attach lifting equipment to engine lifting eye and raise front of engine approximately 51 mm (2.0 inches) to provide necessary clearance for water pump removal.
  1. Remove water pump pulley retaining bolts and water pump pulley (8509).
  1. Remove drive belt tensioner pulley retaining bolt and drive belt tensioner pulley (6B217) from power steering pump support.
  1. Remove power steering pump support retaining bolts and nut. Place power steering pump and support assembly aside in a position to prevent fluid leakage.
  1. Remove water pump retaining bolts and nuts and water pump. Discard used water pump housing gasket (8507).
Installation
  1. NOTE: Lightly oil all bolt and stud bolt threads before installation except those specifying special sealant.

    Clean gasket surfaces on water pump and engine front cover (6019).
  1. NOTE: The threads of the No. 1 engine front cover retaining stud must be coated with Pipe Sealant with Teflon® D8AZ-19554-A or equivalent meeting Ford specification WSK-M2G350-A2 before installing.

    NOTE: Gasket and Trim Adhesive D7AZ-19B508-B or equivalent meeting Ford specification ESE-M2G52-A is recommended to hold the water pump housing gasket in position.

    Position a new water pump housing gasket on water pump housing sealing surface.
  1. Position water pump on the engine front cover. Install retaining bolts.
  1. Position power steering pump support and install retaining nuts and bolts. Tighten bolts and nuts to 40-55 Nm (30-40 lb-ft).
  1. Install drive belt tensioner pulley and retaining bolt. Tighten bolt to 70-95 Nm (52-70 lb-ft).
  1. Install A/C bracket brace.
  1. Position water pump pulley on water pump hub and install retaining bolts. Tighten bolts to 8.0-11.5 Nm (71-101 lb-in).
  1. Lower engine and disconnect lifting equipment from lifting eye.
  1. Remove lifting eye from exhaust manifold.
  1. Connect heater water outlet tube to water pump and install retaining bolts. Tighten bolts to 8-11.5 Nm (71-101 lb-in).
  1. Connect water bypass hose and oil cooler hose to heater water outlet tube. Tighten clamps securely.
  1. Connect power steering pressure line to power steering pump fitting.
  1. Install power steering reservoir filler cap.
  1. Install generator to power steering pump support. Refer to Section 14-02 .
  1. Connect battery ground cable. Refer to Section 14-01 .
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. Install lower nut on front engine support insulators and tighten retaining nut to 88-119 Nm (65-87 lb-ft). Install lower nut of rear engine support insulator and tighten to 77-104 Nm (56-76 lb-ft).
  1. Connect radiator lower hose tube to water pump. Install retaining bolt and tighten securely.
  1. Connect lower radiator hose to radiator lower hose tube and radiator. Position hose clamps securely. Refer to Section 03-03 .
  1. Lower vehicle.
  1. Position drive belt over drive belt tensioner and release drive belt tensioner. Refer to Section 03-05 .
  1. stw~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: This engine has aluminum cylinder heads (6049) and requires a special corrosion inhibiting coolant to avoid cooling system damage. Refer to Section 03-03 for the coolant specifications.
    Fill and bleed cooling system with specified coolant.
  1. Fill power steering pump reservoir with specified fluid.
  1. Start engine and check for coolant and power steering fluid leaks. Service as necessary.


    Water Pump
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Apr 13, 2009 | 1996 Ford Windstar

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