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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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Posted on Jan 02, 2017

  • 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

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.

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

1991 pontiac grand prix le 3.1l overheating


I had an older vehicle that overheated. I flushed out the radiator twice, but it was so clogged up, I had to replace it, so check the radiator. If you inspect the radiator from the filler neck, you can see if there is crud build-up on the tubes. The problem could be the water pump. Typically when water pumps fail, they start to leak from the weep hole(s) on top and /or bottom. Is there any leak from the pump? If there is, that is indication that the pump need to be replaced. Hope this helps !

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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.

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Ok fellow 2006 Grand Prix owners!! By trial and error, I went through the process of elimination because my car would over heat and had no heat inside. After changing the thermostat, I had to replace the water pump. However, after you do this, you need to open the inlet hose bleeder and let the air out a few times. This solved my issue of overheating and I now have great heat!!!

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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.

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I have a 1995 Pontiac Grand Prix SE 3.1L V6 and I have no heat, and the defrost barely works. My coolant is leaking and when the car is on, it flies off the front of the belt and drips to the ground. Is my...


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

Feb 05, 2011 | 1995 Pontiac Grand Prix

1 Answer

I recently replaced my water pump. this afternoon my car overheated and radiator fluid was leaking above the water pump


Check your thermostat. It may be sticking and keeping the coolant from flowing, hence the overheating. Where above the water pump is it leaking? Hopefully you didn't blow a head gasket.

Jun 08, 2009 | 2002 Pontiac Grand Prix

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