Question about 1993 Cadillac DeVille

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My new water pump keeps leaking and i have tried tightening in sequence as manual says but it continues to leak. second gasket tried 1990 cad deville 4.5L is there bolt tightening sequence other than manual

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Are you using a remanufactured pump? I had this problem with one, Had it on and off 3 times. Switched to a new pump, No more problems. I've used new pumps on these ever since. When they are rebuilt the reman company doesn't check the steel plate for flatness. If the last person who removed it bent it, It will never seal up. Try a new pump instead.

Posted on May 15, 2010


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Signs bad water pump put in new one and its still leaking

I can only ake guesses at your problem because you haven't given a year of the Maxima. There are some basic mistakes which are of made by non professionals. When replacing a waterpump, make sure that the surface on the front cover which the pump mounts to is absolutely clean. This means no residual gasket material. Although the pump can be installed with silicon alone, I do not recommend it. You can buy a water pump gasket from Nissan and from many after market parts houses. USE A GASKET! NO SILICON!! you can buy a gasket adhesive in a spray can to hold the gaskey in place if you are having a problem with the gasket staying in the proper position. Usually there are two pins on the front cover which the pump lines up with when you install it. The gasket has holes for these pins to go through. Be careful in tighing the bolts, tightening them cross wise Tighten one and then go accross to the opposite side of the pump and tighten that bolt. "DO NOT TIGHTEN THEN FULLY ON THE FIRST TIME YOU PUT THE BOLT IN AND TIGHTEN IT ALL TH WAY>). and not just going around the pump clockwise or counter clockwise, bolt after bolt. Make it fully tight on the second time you go around, New pumps don't always mean you will get one which is not defective. I have run into a situation one time where I had to change a water pump on a 1978 280Z 3 times before the one I got one from the parts depatment that didn't leak! (AND THIS WAS WHILE I WAS WORKING AT A DATSUN DEALER!).Note: also make sure that your leak is not coming from somewhere above the pump and running down on the pump. An aftermarket pump which I have had reasonably good luck with is GMB.Hopefully this has shed some light on your problem.

Mar 18, 2014 | Nissan Maxima Cars & Trucks

1 Answer

How do i replace the water pump on a 1997 rodeo v6?


Feb 19, 2011 | 1997 Isuzu Rodeo

1 Answer

How to replace the water pump

Water Pump
Never open, service or drain the radiator or
cooling system when hot; serious burns can occur from the steam and hot coolant.
Also, when draining engine coolant, keep in mind that cats and dogs are
attracted to ethylene glycol antifreeze and could drink any that is left in an
uncovered container or in puddles on the ground. This will prove fatal in
sufficient quantities. Always drain coolant into a sealable container. Coolant
should be reused unless it is contaminated or is several years old.

2S-ELC Engines

  1. Drain the cooling system.
  2. Remove the timing belt as described in this section.
  3. Remove the alternator adjusting bar.
  4. Disconnect the lower radiator hose from the water inlet housing.

    Fig. 1: Exploded view of the water pump mounting

  5. Disconnect the water temperature switch from the water inlet housing.
  6. Disconnect the water by-pass hose from the water pump.
  7. Remove the two heater pipe clamp bolt. Remove the two nuts and heater pipe
    with gasket. Replace the gasket.
  8. Loosen the three water pump mounting bolts in the indicated sequence.

    Fig. 2: Water pump bolt loosening sequence for 2S-ELC and 3S-FE

  9. Remove the water pump and O-ring. If the water pump is stubborn, tap it a
    few times with a rubber mallet.
  10. Installation is the reverse of removal. Make sure all the water pump and
    engine contact surfaces are clean and install the new O-ring into the pump cover
  11. Install the water pump with the three bolts. Tighten the bolts in sequence
    to 82 inch lbs. (9 Nm).
  12. Fill the cooling system to the proper level with a good brand of ethylene
    glycol based coolant. Start the engine and inspect for leaks.

3S-FE Engines

  1. Drain the cooling system.
  2. Disconnect the water temperature switch connector from the water inlet
  3. Disconnect the lower radiator hose from the water inlet housing.
  4. Remove the timing belt and timing belt pulleys as described in this section.

  5. Remove the two nuts attaching the water by-pass pipe to the water pump
  6. Remove the three water pump-to-engine attaching bolts.
  7. Pull the water pump and the water pump cover out from the engine.
  8. Remove the two O-rings and gasket. Discard them and replace with new.
  9. Installation is the reverse of removal. Secure the water pump onto the
    engine and install the three bolts. Tighten the bolts in an alternate pattern to
    82 inch lbs. (9 Nm). Install the by-pass pipe attaching nuts and tighten them to
    82 inch lbs. (9 Nm) also.
  10. Fill the cooling system to the proper level with coolant.
  11. Start the engine and check for leaks.

5S-FE Engine

  1. Drain the engine coolant.
  2. Remove the timing belt.
  3. Remove the No. 1 idler pulley and tension spring. Remove the No. 2 idler
  4. Disconnect the lower radiator hose at the water inlet.
  5. Remove the alternator belt adjusting bar.
  6. Loosen the two nuts and disconnect the water by-pass pipe.
  7. Remove the three pump mounting bolts in sequence (middle, top, bottom) and
    then pull out the water pump and cover. Remove the gasket and two O-rings.

    Fig. 3: Bolt removal sequence for 5S-FE engines

    To install:

  8. Replace the two O-rings and gasket with new ones, coat the by-pass O-ring
    with soapy water and then connect the pump cover to the by-pass pipe. Do not
    install the nuts yet!
  9. With the pump loosely connected to the pipe, install the pump and tighten
    the three bolts to 82 inch lbs. (9 Nm), in sequence (top, bottom, middle).
    Install the two by-pass pipe nuts and tighten them to 78 inch lbs. (9 Nm).
  10. The remainder of installation is the reverse of removal. Tighten each
    component to specifications.

2VZ-FE and 3VZ-FE Engines

  1. Drain the engine coolant.
  2. Disconnect the lower radiator hose at the water inlet.
  3. Disconnect the timing belt from the water pump pulley.
  4. Remove the bolt holding the inlet pipe to the alternator belt adjusting bar
    and then remove the inlet pipe and O-ring.
  5. Remove the water inlet and thermostat.
  6. Remove the seven bolts and then pry off the water pump.
    To install:

  7. Scrape any remaining gasket material off the pump mating surface. Apply a
    0.08-0.12 inch (2-3mm) bead of sealant to the groove in the pump and then
    install the pump. Tighten the bolts to 14 ft. lbs. (20 Nm).

    Fig. 4: Apply sealant on the surface of the water pump as shown


  8. The remainder of installation is the reverse of removal. Tighten each
    component to specifications. Connect the radiator hose and fill the engine with

1MZ-FE Engine

  1. Drain the engine coolant.
  2. Remove the timing belt.
  3. Mark the left and right camshaft pulleys with a touch of paint. Using a
    spanner wrench, remove the bolts to the right and left camshaft pulleys.
    Separate the pulleys from the engine. Be sure not to mix up the pulleys.
  4. Remove the No. 2 idler pulley by removing the bolt.
  5. Disconnect the three clamps and engine wire from the rear timing belt cover.

  6. Remove the six bolts holding the No. 3 timing belt cover to the engine

    Fig. 5: Unbolt the No. 3 timing belt cover from the engine

  7. Remove the bolts and nuts to the extract the water pump.

    Fig. 6: Water pump mounting bolt and nut locations

  8. Raise the engine slightly and remove the water pump and the gasket from the

    Fig. 7: Pull the water pump from the engine and remove it from
    the vehicle

    Fig. 8: Always discard the old gasket

    To install:

  9. Check that the water pump turns smoothly. Also check the air hole for
    coolant leakage.
  10. Using a new gasket, apply liquid sealer to the gasket, water pump and engine
  11. Install the gasket and pump to the engine and install the four bolts and two
    nuts. Tighten the nuts and bolts to 53 inch lbs. (6 Nm).
  12. The remainder of installation is the reverse of removal. Tighten each
    component to specifications.

    • Rear timing belt cover - 74 inch lbs. (9 Nm).
    • No. 2 idler pulley - 32 ft. lbs. (43 Nm)

  13. Fill the engine coolant. Connect the negative battery cable to the battery
    and start the engine.
  14. Top off the engine coolant and check for leaks.

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Oct 31, 2010 | 1990 Toyota Camry

2 Answers

Leaking coolant from pipe behind throttle body..

Look for a loose water or coolant hose .
Re tighten it and you will be OK .
If the problem is that it leaks the engine gasket then you may need to reinstall new gasket but this involves a lot of work.
A good light and a good mirror is what you need to see better where the leak is coming from .

Dec 11, 2009 | 1990 Oldsmobile Silhouette

1 Answer

1990 cad diville at start up white smoke from exaust

White smoke is caused by burning water (anitfreeze). You did not give much to work with but here goes.

  1. If you had the cooling system flushed or the coolant changed anytime in the last year or so, check and see if they put the seal tabs in after the flush. If you still have all your decals on the radiator mantle, you will see a decal that states you must put in a seal tab after service or void the warranty.
  2. Your head gasket or intake gasket may be leaking a little. If you are not getting any coolant during regular driving it may not be that bad, and may be seeping into the combustion chamber overnight and burning on start up.
You should detect a gradual loss of coolant if this is the case.

For both the leaks I recommend Barr's Leak head gasket repair. It is less than 20 bucks and if you follow the directions to the letter it will work and be a permanent fix. It certainly will be a lot less than putting in a new set of head gaskets.

Remember, follow the directions to the letter. In your case you can skip the one that requires you to locate the cylinder that is leaking and remove the plug. You don't have that problem

Hope this helps.

Oct 16, 2009 | 1990 Cadillac Deville

2 Answers

Water pump still leaks 92 cadillac deville

yes always use gasket sealer on both sides of the gasket. and make sure the old gasket is completely removed but do not use a chisel ar anything as you will leave gouges in the metal and cause a leak. Best to clean it is with some sand paper and just take your time. And just a thougtht but all i use is the black gasket sealer. It seems to wwork the best.

Jul 28, 2009 | 1992 Cadillac DeVille

1 Answer

Water pump bearing went out. leaking water need to see manual on how I can replace waterpump

Difficult to get to but not complicated to replace. Remove housing bolts, clean the surface, (engine side) then put on new one with gasket if applicable. Tighten botlts in sequence slightly so as not to warp new waterpump...they are made of cast aluminum, (pot metal), and if you individually tighten, you run the risk of warpage and developing a leak. This is an easy fix...but in a tight spot.

Jun 19, 2009 | 1993 Dodge Caravan

1 Answer

95 cadillac devill water pump replacement

Per Chilton's Repair Manual: You're dealing with aluminum so pay careful attention not to exceed recommended torque.

4.5L And 4.9L Engines
  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Remove the air filter assembly. Disconnect and remove the coolant recovery tank.
  4. Disconnect and remove the cross brace.
  5. Remove the water pump pulley bolts.
  6. Remove the serpentine drive belt and the water pump pulley.
  7. Remove the water pump-to-engine bolts and the pump.
84203050.gif Water pump assembly—4.5L and 4.9L engines
To install:
  1. Clean the gasket mounting surfaces.
  2. Place a new gasket over the water pump studs.
  3. Install the water pump. Tighten the water pump bolts as follows:
    1. Water pump-to-engine Torx® bolts to 30 ft. lbs. (40 Nm)
    2. Water pump-to-engine stud nuts to 5 ft. lbs. (7 Nm)
    3. Hex head bolts to 30 ft. lbs. (40 Nm)
    4. Remaining hex head bolts to 5 ft. lbs. (7 Nm).
  4. Install the water pump pulley. Install the water pump pulley bolts finger-tight.
  5. Install the serpentine drive belt.
  6. Tighten the water pump pulley bolts to 22 ft. lbs. (30 Nm).
  7. Install the cross brace.
  8. Install and connect the coolant recovery tank. Install the air filter assembly.
  9. Connect the negative battery cable.
  10. Fill cooling system and check for leaks. Start the engine and allow it to come to normal operating temperature. Recheck for leaks. Top-up the coolant.

May 06, 2009 | 1995 Cadillac DeVille

2 Answers

Change water pump

If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

0900c1528004319d.jpgReverse rotation water pump—2.5L and 4.0L engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
    • Negative battery cable
    • Electric cooling fan connector
    • Accessory drive belt
    • Engine cooling fan and pulley
    • Water pump pulley
    • Power steering pump
    • Lower radiator hose from the water pump
    • Heater hose
    • Water pump and discard the gasket
To install:
  1. Clean the mating surfaces of all gasket material.
  2. Install or connect the following:
    • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
    • Heater hose
    • Lower radiator hose
    • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
    • Power steering pump
    • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
    • Accessory drive belt
    • Electric cooling fan connector
    • Negative battery cable
  3. Fill and bleed the cooling system.
  4. Start the engine, check for leaks and repair if necessary.
3.7L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fan and clutch assembly from the pump
    • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
    • Lower hose
    • Water pump (8 bolts)
  4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). 0900c1528004319e.jpgWater pump tightening sequence—3.7L

Nov 15, 2008 | 2002 Jeep Grand Cherokee

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