Question about 1998 Pontiac Bonneville

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Water pump and thermostat

I can access the thermostat but am not sure what tool is required to remove the bolts; I was told 1/2" crescent wrench would be sufficient but it doesn't fit and I don't have an extension on my ratchet set. I also would like to know where the water pump is located so I can replace that as well and if I will need a jack or etc.

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  • Pontiac Master
  • 5,280 Answers

Buy the extension as an individual item at Sears or any parts store. Another handy piece for your ratchet is a universal joint for use when the bolt is a little offset from a straight extension reaching the bolt.
The water pump will be on the front of the engine and run by the timing belt. Pretty involved procedure, check a repair manual for how it's done before you decide if you can do it and have enough tools. Most times, you have to remove the front motor mount and place a small jack under the oil pan (supported by a block of wood to prevent damaging the oil pan) to keep the engine from lowering. The crankshaft pulley and its tight bolt will also have to be removed. Mechanics use an impact gun to loosen the bolt, but can also be done with a socket over the bolt and a 1/2 inch drive breaker bar.
Check the repair manual and if you want to do it, buy the manual, it will be of invaluable help.

Posted on Dec 09, 2012

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Posted on Jan 02, 2017

  • 2841 Answers

SOURCE: Need to replace water pump on 1999 pont sunfire

No, just basic mechanics hand tools. This vehicle is 11 years old. I recommend you perform a complete cooling system service at the same time you replace the water pump. Drain, flush, replace the thermostat, replace the water pump, pour in a 50/50 mix of the correct antifreeze and distilled water. (Do not use tap water). Bleed all air from the system. Also inspect the radiator hoses and heater hoses. Replace as necessary.

Posted on Jul 04, 2010

  • 107 Answers

SOURCE: I have a 1994 Pontiac Bonneville, the water pump

get the repair manuel there is no special tools required you can do it in one afternoon what motor?

Posted on Jul 20, 2009

dnewcombe1
  • 1564 Answers

SOURCE: replace thermostat

Follow your "top"radiator to where connects with the engine. The themostat housing is right there. Two screws usually hold it down. They may be metric, either 10mm. or 12mm. or they are American 1/2 inch. Remove them and make sure that you don't lose the large o-ring that seals the housing.I dont think it has a gasket, most are o-rings nowadays which makes thing much simpler. Remove the old thermostat with a long thin screwdriver. And place the new one (very important) with the "A" shape facing upward. Then replace the housing making sure to screw the screws back in at an even count(go a few on one the a few on the other) till tightened. P.S. there's usually no need to remove the hose from the housing. It will swing up and away.If the thermostat stays in the hose pry it out the same way as previously discribed and put back into the engine block again with the "A" shape facing upward. Hope you do well, Thanks Dana

Posted on Aug 14, 2009

  • 540 Answers

SOURCE: removing water pump on 97 grand prix gt. Power

no you have to go thru the holes in the front of the power steering pulley. Usually a ratchet with a deep 13mm socket will do to remove the 2 bolts located at 12 and 6 o'clock then you will be able to move it out of the way

Posted on Jan 11, 2010

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Change the water pump


  • Tools Required
  • J 43651 Water Pump Holding Tool
  • Remove the thermostat housing.
  • Remove the water pump access plate from the front cover.
  • Remove the right hand fender liner.
    1. Important: A drain plug has been provided at the bottom of the water pump assembly for additional coolant drainage from the engine block and water pump.
    Drain the coolant from the water pump using the plug at the bottom of the pump.
    1. mportant: The water pump holding tool supports the sprocket and chain during water pump service. The tool must be used or the balance shaft must be re-timed.
    Install the J 43651 into position.
    1. Tighten the bolts on the water pump holding tool into the threads on the water pump sprocket.
    2. Install the access cover bolts that were removed earlier to secure the water pump holding tool to the front cover assembly.
    3. Remove the 3 inner water pump sprocket to water pump blots.
      1. Important: Be sure to remove both water pump bolts from the front of the engine block.
      Remove the 2 water pump bolts.
      Remove the rear 2 water pump bolts.
      1. Remove the water pump.
      2. Remove and discard the water pump O-ring seal.
      Installation Procedure
      1. Important: Prior to installing the water pump, read the entire procedure. This will help avoid balance shaft chain re-timing and ensure proper sealing.
      Install a NEW water pump O-ring seal.

      1. Important: A guide pin can be created to aid in water pump alignment. Use a M 6 m x 6 mm stud. Thread the pin into the water pump sprocket.
      Using the guide pin, align the pin with the water pump holding tool.
      1. Position the water pump against the engine block and hand tighten the water pump bolts.
      2. Notice: Refer to Fastener Notice.
      Install the inner water pump sprocket bolts. After 2 are snug, remove the guide pin and install the 3rd bolt.
      Tighten the bolts to 25 Nm (18 ft. lbs.).
      1. Tighten the water pump sprocket bolts last. Tighten the bolts to 10 Nm (89 inch lbs.).
      2. Remove the J 43651.
      3. Install the water pump access plate and bolts. Tighten the bolts to 10 Nm (89 inch lbs.).
      4. Install the right hand fender liner.
      5. Install the thermostat housing.



Aug 29, 2011 | 2006 Pontiac Solstice

1 Answer

How to you replace the thermostat in a 3.1l gm engine


3.1 Thermostat replace
You'll want some pretty good lighting. If you were thinking of investing in some shop lights for your garage,now would be a good time.

Tools required from memory:
1. 13 MM, 12 point, box end wrench for lowerthermostat housing bolt
2. 3/8 rachet 3. 3/8 drive 13 MM wobble socketor 13 MM short socket with universal joint for upper thermostat housing bolt. 4. 3/8 drive 6" extension 5. 9/32" socket or endwrench for bleeder screws
6. Channel Lock to release hose clamps. Also a normal pliers for the small clamps ifyou use Method 1.
7. Siphon tube
8. Container to capture antifreeze
9. Latex gloves

Procedures:
1. Let the car cool down.
2. Siphon about a gallon ofantifreeze from the radiator. 3. Follow the top radiatorhose on the driver's side to the engine and remove the hose from the thermostathousing. The thermostat is under thethermostat housing. There is no gasketbecause the thermostat has a rubber ring built onto it. 4. Remove the rigid PCVintake hose from air inlet duct
5. Loosen the air inlet duct clamps onthe air cleaner and throttle body, and move the duct aside. This is a perfect time to check the aircleaner element and clean the housing of debris. 6. There are couple of methodsyou can use to remove the thermostat housing. Method 1. Remove the throttle body. You will need a new throttle body gasket butit makes getting at the lower thermostat housing bolt easier. You will also need to remove the littlecoolant hoses that feed the throttle body. It does give you the opportunity to clean the throttle body withcarburetor cleaner if you wish. Thismethod requires no more explanation since the thermostat housing lower boltwill be fairly accessible. Method 2. Do not remove the throttle body. You will not need any parts other than thethermostat, but you have very little room to move your wrench on the bottom thermostathousing bolt, which makes it slow going. It generally requires you to remove one coolant line from the heatercore where it connects to the steel tube by the throttle body in order to getthe lower bolt back in, depending on the length of your fingers. a. Optionally, remove the heater hose that runsto the metal tube near the throttle body. You can get the lower bolt out without this step. The problem I have without this step isgetting the lower bolt back in.
b. Remove the lower bolt first. Youwill need to maneuver your hands both under the exhaust manifold on the frontside and from behind the exhaust manifold on the back side to move the 13 MM boxend wrench 30 degrees at a time. This iswhy you need a 12 point box end. Youcould try the ratcheting box end wrench, but when it starts to get loose, it'stough to put enough friction on it for the ratchet to work. You will hear people talk about how thehosing is slotted so you don't need to remove it all the way. That is false. That only works on old 3.1s that have a longstud and nut. You cannot remove thethermostat housing without removing the bolt because the thermostat extendsinto the thermostat housing for longer than the bolt. (Been there, tried that.)
7. Remove the upper bolt with the 13 MMsocket, universal joint, extension, and ratchet. 8. Clean the face of thethermostat housing and recess there the thermostat fits into the inlet manifoldin the thermostat rubber seal contact area.
9. Insert the new thermostat goes intothe inlet manifold, spring end first. Make sure it is in all the way so the rubber ring does not get pinchedwhen you tighten the thermostat housing down on top of it.
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15. When the thermostat opens, the levelin the radiator will drop and you will be able to pour in most of the the remainderof the anti-freeze. Then replace the cap. Pour the little remaining into the reservoir.

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1 Answer

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Hi. Normal installation would take 45 to 1 hour depends on your expertise. Here's the procedure on how to replace the power pump.

  • TOOLS REQUIRED
  • J-43651 Water Pump Sprocket Holding Tool
REMOVAL



  1. Disconnect negative battery cable.
  2. Remove air inlet tube and air cleaner assembly. Refer to "Air Cleaner Assembly Removal".
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  1. Remove exhaust manifold heat shield. IMPORTANT: Twist water feed pipe while pulling to remove it from water pump.


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  1. Install J-43651 water pump sprocket holding tool. IMPORTANT: Be sure to remove retaining bolt that is accessed from front of engine block.


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INSTALLATION

NOTICE: Prior to installing the water pump read the entire procedure. Pay special attention to avoid part damage and to ensure proper sealing.



  1. Install water pump assembly.
  2. Install water pump bolts. Initially finger tighten bolts
  • Torque: 25 Nm (18 ft. lbs.)



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  3. Install water feed tube by twisting and pushing toward water pump. Take care not to tear or damage the O-ring.
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  • Torque: 10 Nm (89 inch lbs.)



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Hi,

The tools required are :-

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A Generic Procedure ( This example is for Other brand but might help you, if needed ) is :-

Step 1

The power steering pump is located on the right fire wall of your vehicle. Place the drain pan directly under the power steering pump and use your small crescent wrench to open the drain plug by turning it counterclockwise until removed. Take care that the car has had time to cool so that you do not burn yourself with the hot fluid. Allow the fluid to drain until it is slowly dripping.

Step 2

Use your large crescent wrench to turn the power steering line nut counterclockwise until it is completely loose. The line will not come off at this point.

Step 3

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Let me know, if needed further assistance.

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I am assuming you are talking about the pulley on the water pump itself, in which case you have to replace the water pump.


First of all,you need the removal tool which looks like this.

http://www.etoolcart.com/gmnorthstarwaterpumpsocketast7880.aspx


You need to remove the air filter housing and ducting to gain easy access to the pump.

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Installing the new pump does not require as much torque as removing the old one.Tighten the new pump to 73 ft.lbs. making sure it is seated properly before tightening.

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It is also a good idea to install a new thermostat while you're at it.

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