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Coolant leak from belt tensioner area on 3100 sfi v6 automatic (1998 pontiac grand prix)

My girlfriend's car, 98 pontiac grand prix 3100, didn't have heat and went overheated. I thought it was water pump that was leaking but I ended up found out it is leaking from belt tensioner area right under the alternator. Is there an coolant connector there?

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 39 Answers

SOURCE: I have a 1995 Pontiac Grand Prix SE 3.1L V6 and I

more than likely one of your heater hoses has sprung a leak ... if your car is not over heating with water in it than your water pump is fine.... the gasket around it may need to be replaced tho ... start your car then you look for your leak please get back to me

Posted on Feb 06, 2011

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airjer995
  • 5332 Answers

SOURCE: Exactly which pulley is my water pump? (1999

The power steering pump is dead center on the top of the motor. If your standing on the passenger side the water pump is the next pulley to the right. The serpentine belt will go over the power steering pulley, under the water pump pulley, and then around the a/c compressor.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Posted on May 30, 2011

  • 118 Answers

SOURCE: coolant leak 2006 pontiac grand prix

These engines like the 3.8 usually have a intake leaking problem. Also the have plastic elbows on the passengers side of intake that go to heater hoses can leak also. Is it a 3.8 liter engine in your car. And where abouts does the fluid look like its coming from.

Posted on Jun 16, 2012

  • 747 Answers

SOURCE: new water pump, drive belt tensioner and aux drive belt all fitted to x type jaguar and still leaking coolant under car

I would start at my coolant hoses there is one on the rt side of the car check coolant overflow hose and the bottle check heater hoses as well or it might be that the pump isn't sealed or something could be left loose

Posted on Sep 04, 2012

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1 Answer

Gm 3100 sfi v6 belt pulley diagram or


Go to autozone dot com and make a free acount, then logon to that account, put in the year, make and model. Look at the free repair guides for that info.

Apr 06, 2014 | 2004 Pontiac Grand Prix

1 Answer

I have a 01 pont grand prix coolant is running out of belt tensioner


your water pump is stuffed . your belt is too tight, it causes the bearings in the water pump to wear to quickly, which results in your leak. when tensioning your belt, make sure the belt can be twisted at least 45 degrees

Dec 18, 2012 | 2001 Pontiac Grand Prix

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I was wondering is there a way to put a v8 caddy motor in a 96 pontiac grand prix se 2 door coup. The motor in my grand prix is a 3100 v6


I would get another 3100 because there is noway you want to try swapping them. It won't work. A used 3100 isn't that high any more.

Jun 28, 2012 | Cars & Trucks

1 Answer

Exactly which pulley is my water pump? (1999 pontiac grand prix 3100 sfi v6)??????????????


The power steering pump is dead center on the top of the motor. If your standing on the passenger side the water pump is the next pulley to the right. The serpentine belt will go over the power steering pulley, under the water pump pulley, and then around the a/c compressor.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

May 30, 2011 | 1999 Pontiac Grand Prix

1 Answer

(1999 pontiac grand prix 3100 v6) how do I remove and replace my serpentine belt successfully?


Instructions Things You'll Need
  • 3/8-inch drive breaker bar
  • Metric socket kit
  • New serpentine belt
    • 1

      Park the Pontiac in a safe work area and open the hood.

    • 2

      Inspect the top of the black plastic cover that surrounds the fan for the serpentine belt routing diagram. This diagram has the instructions for installing the new serpentine belt around the accessory pulleys.

    • 3

      Inspect the front of the engine and locate the automatic belt tensioner. The tensioner on the 1999 Pontiac model vehicles is located between the alternator and the crankshaft pulley. The tensioner has a pulley on one end with a bolt head in the center of the pulley. Use the bolt head to rotate the tensioner.

    • 4

      Turn the tensioner counterclockwise with the breaker bar and a metric socket. Pull the belt out from under the tensioner pulley with your other hand. Then, slowly let the tensioner retract until it stops.

    • 5

      Pull the belt out of the other remaining pulleys. Then, pull the belt out of the engine bay and lay it on the ground.

    • 6

      Route the new belt around the crankshaft pulley. Then, route the new belt around the other remaining pullleys by using the serpentine belt routing diagram for instructions.

    • 7

      Rotate the tensioner pulley counterclockwise with the breaker bar and socket. Then, slide the new belt under the tensioner pulley. Slowly let the tensioner retract until it stops. The tensioner pulls all of the slack out of the belt and brings the new belt to the proper tension. Remove the breaker bar and socket from the tensioner pulley.

    • 8

      Inspect the new belt to ensure that it is seated inside of all the accessory pulleys as directed by the diagram. Then, crank the engine and allow it to run for about 15 seconds. Turn the engine off. Inspect the belt again once more to ensure that
      the belt is still around each pulley. Close the hood.



May 22, 2011 | 1999 Pontiac Grand Prix

1 Answer

(1999 pontiac grand prix 3100 v6) when I turn my wheel, rather left or right I hear a moaning. Noise and its very annoying, help me!


Check the power steering fluid, have a helper turn the wheel and look under the hood and see if the power steering pump is making noise, check the P/S belt to make sure it's tight.

May 18, 2011 | 1999 Pontiac Grand Prix

1 Answer

What is the most effective fuel injector cleaner for a 3100 v6 sfi engine?


I always use this one in all GM motors
http://www.amazon.com/Chevron-Techron-System-Cleaner-65740/dp/B00092893E

May 16, 2011 | 1999 Pontiac Grand Prix

1 Answer

'98 grand prix GTP belt tensioner replacement


I didnt have to remove my alternator, I just used a 15 mm wrench to remove the left-hand threaded bolt holding the tensioner on. hope this helps

Jul 14, 2009 | 1998 Pontiac Grand Prix

1 Answer

Hi all, im putting a 1995 3100 sfi motor out of a


no your on the rite track worst case you will have a engine light on no big deal

Jul 02, 2009 | 1992 Pontiac Grand Prix

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