Question about 2002 Pontiac Montana

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Has anyone had the coolant leak from the timing chain cover? Is this a common problem? I just had the water pump replaced two weeks ago.

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Water pump not properly sealed......u need to pull it and add more sealant...also a new gasket...now

Posted on Dec 12, 2009

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Posted on Jan 02, 2017

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1 Answer

What could be the reasons why I am loosing coolant?


you will have to check for a coolant leak. check all hoses, gaskets. you could have a water pump leaking which is behind the timing cover.

Sep 18, 2014 | 2005 Honda Accord

1 Answer

02 dodge stratus 2.7 coolant leak


The seals in the water pump are going bad. It is probably coming out the weep hole on the waterpump. Get a good one or yoy will be doing it again next year.

Apr 13, 2017 | Dodge Cars & Trucks

2 Answers

I changed a thermostat on a 2004 dodge intrepid 2.7 and there is a hole thats located next to the bottom housing bolt leaking coolant


The hole you are describing sounds to be the wheap hole for the water pump
years ago the first time i had that issue it drove me nuts to figure it out .. btw not really a job to take on by yourself as it is a chain driven motor, also make sure you are prepared to pay more than the mechanic tells you as it is common to have to change the chain tensioner after this repair (when they collapse the hydrolic unit alot of times they will not "re-inflate")

Jun 03, 2011 | 2004 Dodge Intrepid

1 Answer

How to change water pump on 1999 alero 2.4 liter twin cam


REPLACE WATER PUMP ON A 1999 OLDSMOBILE ALERO. FIRST YOU HAVE TO DRAIN COOLANT SYSTEM IN A LARGE DRAIN. RADIATOR DRAIN PLUG SHOULD BE ON THE BOTTOM ON PASSENGER SIDE. THEN RAISE THE VECHICLE SUPPORT VECHICLE WITH JACKSTANDS. REMOVE THE EXHAUST MANIFOLD FROM THE ENGINE. CAUTION DO NOT ROTATE THE FLEX COUPLING ON THE FRONT EXHAUST PIPE MORE THAN 4 DEGREE OR DAMAGE TO THE FLEX COUPLING MAY OCCUR. REMOVE THE THERMOSTAT AND THE COOLANT INLET PIPE FROM THE WATER PUMP HOUSING AND SEPARATE THE ASSEMBLY FROM THE ENGINE. LOWER THE VECHICLE REMOVE THE BRAKE BOOSTER VACUUM HOSE FROM THE CAMSHAFT HOUSING. REMOVE THE FRONT TIMING CHAIN COVER AND THE TIMING CHAIN TENSIONER FROM THE ENGINE. CAUTION THE TIMING CHAIN TENSIONER MUST BE REMOVED TO UNLOAD CHAIN TENSION BEFORE REMOVING THE WATER PUMP FROM THE HOUSING OTHERWISE THE WATER PUMP WILL BECOME JAMMED IN THE TIMING CHAIN HOUSING. REMOVE THE HEATER OUTLET PIPE FROM THE WATER PUMP COVER. REMOVE THE WATER PUMP COVER BOLTS FROM THE ENGINE BLOCK AND THE WATER PUMP. REMOVE WATER PUMP RETAINING NUTS AND SEPARATE THE WATER PUMP FROM THE TIMING CHAIN HOUSING. CLEAN THE SEALING SURFACES OF ALL GASKET MATERIAL ON THE WATER PUMP, WATER PUMP COVER AND THE TIMING CHAIN HOUSING. WIPE THE MATING SURFACES WITH A RAG SATURATED LACQUER THINNER OR ACETONE. YOU CAN BUY THESE CHEMICAL AT LOWES OR WALMART DEPARTMENT WHERE THEY SELL PAINTS. FIRST INSTALL THE WATER PUMP COVER AND GASKET TO THE WATER PUMP ON THE BENCH BUT LEAVE THE BOLTS FINGER TIGHT. APPLY A THIN LAYER OF RTV SEALANT TO BOTH SIDES OF THE NEW GASKET AND INSTALL THE GASKET ON THE WATER PUMP. WAIT FOR RTV SEALANT SET UP DRY FIRST. POSITION WATER PUMP AND WATER PUMP COVER ASSEMBLY INTO TIMING CHAIN HOUSING ENGAGING THE WATER PUMP SPROCKET IN THE TIMING CHAIN, AND INSTALL THE NUTS FINGER TIGHT. USE CAUTION TO ENSURE THAT THE GASKET DOESNT SLIP OUT OF POSITION. LEAVE THE NUTS LOOSE TO ALLOW REPOSITIONING WHEN THE BLOCK BOLTS ARE INSTALLED IN THE NEXT STEP. INSTALL THE WATER PUMP COVER TO ENGINE BLOCK BOLTS AND TIGHTEN THEM BY HAND. LUBRICATE THE O - RING ON THE HEATER OUTLET PIPE WITH COOLANT AND INSTALL IT INTO THE WATER PUMP COVER. HAND TIGHTEN THE BOLTS. NOW THAT THE ENTIRE WATER PUMP HOUSING ASSEMBLY IS INSTALLED AND IS FITTED AGAINST THE ENGINE BLOCK. TIGHTEN BOLTS CRISS CROSS SEQUENCE TO INSURE PROPER SEAL TORQUE WATER PUMP TO TIMING CHAIN HOUSING NUTS TO 19 FT LBS .NOW TORQUE WATER PUMP COVER TO WATER PUMP HOUSING BOLTS TO 124 INCH POUNDS. TORQUE WATER PUMP COVER TO ENGINE BLOCK BOLTS 19 FT LBS. TORQUE 124 INCH POUNDS THE RADIATOR OUTLET PIPE TO WATER PUMP HOUSING. INSTALL THE TIMING CHAIN TENSIONER AND COVER. INSTALL THE EXHAUST MANIFOLD. INSTALL THE EXHAUST PIPE TO THE EXHAUST MANIFOLD. WHEN ALL IS DONE. START POURING COOLANT IN THE RADIATOR OR COOLANT OVER FLOW JUG.CHECK FOR LEAKS. IF IS GOOD KEEP ADDING COOLANT TO RADIATOR OR OVER FLOW RESERVOIR UNTIL COOLANT LEVEL STOP DROPPING. NOW START ENGINE. WATCH THE COOLANT LEVEL WHEN START DROPPING ADD MORE COOLANT IN RADIATOR OR OVERFLOW JUG. WHEN COOLANT STOP DROPPING INSTALL RADIATOR CAP OR OVERFLOW JUG CAP. LET ENGINE IDLE UNTIL THERMOSTAT OPENS WATCH TEMPERATURE GAUGE WHEN TEMPERATURE GAUGE RISING TO OVERHEATING. TURN OFF ENGINE WAIT A WHILE TAKE A LARGE RAG SLOWLY OPEN RADIATOR CAP A LITTLE TO RELEASE PRESSURE. WHEN PRESSURE RELEASE REMOVE RADIATOR CAP ADD MORE COOLANT. START ENGINE LET IDLE WATCH TEMP GAUGE. TEMP GAUGE START RISING AGAIN TURN OFF ENGINE LET IT SET A WHILE ADD MORE COOLANT. TO RADIATOR. WHEN ENGINE TEMPERATURE GAUGE STOP RISING AND THERMOSTAT OPENS YOUR COOLANT SYSTEM AIR IS BLED OUT. JUST LET VECHICLE SET A LITTLE CHECK COOLANT LEVEL MAKE ITS CORRECT BEFORE START DRIVING VECHICLE. IF YOU TAKE VECHICLE FOR TEST SPIN TAKE LARGE RAG AND PLENTY COOLANT WITH YOU.IF ENGINE START OVERHEATING WHILE DRIVING PULL OFF ROAD SAFELY WAIT 20 TO 30 MINUTES. USE LARGE RAG SLOWLY OPEN CAP A LITTLE RELEASE PRESSURE. THEN REMOVE RADIATOR CAP ADD MORE COOLANT IF NEEDED. HOPE THIS HELP.

Dec 10, 2010 | 1999 Oldsmobile Alero

1 Answer

How to replace water pump 2003 alero. 3400 engine.


Removal & Installation 2.2L Engine To Remove:
  1. Disconnect the battery ground cable.
  2. If equipped with an automatic transmission, remove the exhaust manifold..
  3. Drain the cooling system.
  4. Raise and safely support the vehicle.
  5. Remove or disconnect the following:
    • Right front wheel and tire assembly.
    • Right front fender liner. chevy_cav_02-04_accescover.gif

    • Access plate on the water pump sprocket from the timing cover.
  6. Install J 43651 water pump sprocket holder or equivalent to the water pump sprocket.
  7. Use the access plate bolts to attach J43651 to the engine front cover.
  8. Remove or disconnect the following:
    • Bolts that secure the sprocket to the water pump.
    • Bolt that secures the engine block to the water pump.
    • Bolt that secures the engine front cover to the water pump.
    • Feed pipe that joins the thermostat housing to the water pump. chevy_cav_02-04_wp.gif

    • 2 Bolts that secure the water pump to the engine block.
    • Water pump.
To Install:
  1. Use a threaded stud in the hub to align the water pump sprocket.
  2. Install or connect the following:
    • Water pump.
    • 2 bolts that secure the water pump to the engine block.
    • Feed pipe that joins the thermostat housing to the water pump.
    • Front cover bolt and the bolt that secures the engine block to the water pump. Tighten the bolts to 15 ft lbs (20 Nm).
    • 2 of the bolts that secure the water pump sprocket to the water pump.
  3. Remove the threaded stud.
  4. Install the last bolt.
    • Tighten the bolts to 89 in lbs (10 Nm).
  5. Remove J 43651.
  6. Install the access plate on the water pump sprocket to the timing cover.
  7. Install the access plate bolts.
    • Tighten the bolts to 18 in lbs (10 Nm).
  8. Install the front fender liner.
  9. Install the right front tire and wheel.
  10. If equipped with an automatic transmission, install the exhaust manifold.
  11. Fill the cooling system.
  12. Connect the battery ground cable.
2.4L Engine To Remove:
Water pump 2.4L 87953070.gif

  1. Disconnect the negative battery cable
  2. Drain the engine coolant.
  3. Remove the exhaust manifold.
  4. Remove the coolant intake pipe as follows:
    1. Remove the coolant inlet pipe bolts.
    2. Remove the wheel and tire assembly.
    3. Remove the engine splash shield.
    4. Remove the bolts from the transaxle-to-engine block brace and remove the brace.
    5. Remove the radiator hose from the coolant inlet pipe.
    6. Remove the coolant inlet pipe to oil pan bolt.
    7. Remove the coolant inlet pipe, thermostat and seal.
  5. Lower the vehicle.
  6. Disconnect the heater hose quick connect from the heater outlet pipe.
  7. Remove the front timing chain cover and the chain tensioner.
  8. Unfasten the water pump-to-cylinder block bolts.
  9. Remove the water pump-to-timing chain housing nuts.
  10. Remove the water pump and cover mounting bolts and nuts.
  11. Remove the water pump and cover as an assembly. Separate the two pieces after removal.
  12. Clean the mating surfaces.
To Install:
  1. Install the water pump cover to the water pump assembly.
  2. Install and hand tighten the pump cover mounting bolts.
  3. Install water pump cover assembly.
  4. Install and hand tighten the cover-to-block mounting bolts.
  5. Install and hand tighten the water pump-to-timing chain housing nuts.
    • Tighten the water pump-to-timing chain housing mounting nuts to 19 ft lb (26 Nm).
    • Tighten the water pump cover-to-water pump mounting bolts to 124 in lb (14 Nm).
    • Tighten the water pump cover-to-engine block bolts starting with the bottom bolt first to 19 ft lb (26 Nm).
  6. Install the heater hose to the water pump pipe.
  7. Using new gaskets, install the exhaust manifold.
  8. Install the oil level indicator and tube.
  9. Connect the brake vacuum tube to the cam housing.
  10. Raise and safely support the vehicle.
  11. Install the catalytic converter.
  12. Install the coolant inlet pipe.
    • Tighten the inlet pipe-to-oil pan bolt to 19 ft lb (26 Nm). Tighten the coolant inlet pipe bolt to 124 in lb (14 Nm).
  13. Install the timing chain and tensioner.
  14. Lower the vehicle.
  15. Connect the oxygen sensor.
  16. Fill cooling system and check the system for leaks.
3.4L Engine To Remove:
  1. Disconnect the battery ground cable.
  2. Drain the cooling system.
  3. Loosen the water pump pulley bolts.
  4. Remove or disconnect the following:
    • Drive belt.
    • Water pump pulley bolts and pulley.
    • Water pump bolts, pump and gasket.
    • Clean the water pump mating surfaces.
To Install:
  1. Install or connect the following:
    • Water pump gasket and pump.
    • Water pump bolts.
      1. Tighten the water pump bolts to 89 in lbs (10 Nm).
    • Water pump pulley and bolt until snug.
    • Drive belt.
  2. Tighten the water pump pulley bolts to 18 ft. lbs (25 Nm).
  3. Fill the cooling system.
  4. Check for leaks.
  5. Connect the battery ground cable.
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Aug 31, 2010 | 2003 Oldsmobile Alero

2 Answers

Coolant Leak at Engine Oil Pan


CHECK FOR LEAKING WATER PUMP WEEP HOLE OR GASKET.ALSO CHECK WATER PUMP HOSE FOR LEAKS.IF ALL LOOKS GOOD.YOU COULD HAVE PINHOLE LEAKS IN RADIATOR CORE LEAKING ON FRONT OF ENGINE OR INTAKE MANIFOLD GASKET LEAKING COOLANT.

Jun 08, 2010 | 2001 Jeep Grand Cherokee

1 Answer

On a 1998 Cavalier 2.4L engine, is the "coolant pump" the same thing as the "water pump"? My coolant pump (under the exhaust manifold) has apparently lost a gasket and is leaking. Is there a rebuild kit or...


Yes the coolant pump is the same thing as a water pump. More than likely your water pump is failing and starting to leek from whats known as a weephole. This repair should be done by a qualified mechanic and takes about 5.5 hours to replace. Only install a new water pump which includes gaskets. U will also need to purchase a timing chain cover gasket set because the pump is driven off the timing chain instead of a rib belt and needs to be removed in order to service the pump.

Dec 18, 2009 | 1998 Chevrolet Cavalier

2 Answers

A leak under the water pump? Just put new water pump in and did not fix the problem.


When you replace the water pump you have to loosen the bolts that also go though the timing chain cover. This have to be removed and the gasket behind it replaced as well as two water pump gaskets. Check all your clamps (best to use new ones) first, but you may be having gasket problems between the pump, pump backing plate, timing chain cover and engine block.

Apr 16, 2009 | 1989 Ford F 250

1 Answer

Leaking coolant


that would ba a big negative the only thing that runs inside that cover is oil now it could be either your water pump or thermostat housing if either one is near that cover the best thing to do is wash down the engine when its cold and once all clean run it and just sit and wait itll show up.. but to answer your question no.. no such thing as coolant in the timing cover

Feb 20, 2009 | 1998 Ford Ranger SuperCab

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