Question about 1999 Pontiac Firebird

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I have a 99 firebird V6 leaking coolant. I was told it was the water pump, after replacing it i found another major leak. Its just above the water pump in a small crevice, can't really tell from where. There is this small black piece there that elbows to the right(toward the passanger side) It might be coming from there, any ideas?

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  • markiemarky Feb 02, 2010

    Actually i figured it out. Its a broken coolant elbow connected to the belt tensioner. Thanks for the reply!!

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  • Pontiac Master
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You might be able to borrow a radiator (engine block) tester from Autozone or Oreillys. You give them a refundable deposit and the tool is yours to use.

This tool will allow you to put pressure into the radiator and anything connected to it will leak. The engine does not have to be running. It sounds like there might be a crack in that part you mentioned. I work mostly on Ford products but you describe a part that could be going to the heater hoses on the passengers side.

Sometimes if you live close to a Salvage yard you can see a part called the intake manifold. Ask to look at one that is off and you might see how it is made. It would probably help you to see the whole engine out of the car.

Since this part is on the top of the engine, you should not have too much to take off to replace the intake manifold if that is cracked. Check any heater hoses going TO the intake for leaks which could be dripping in that area. Good Luck

Posted on Feb 01, 2010

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My 2001 Terracan highlander has coolant leaking under the engine.Can someone tell me where the leak is coming from and how to fix it? The car has a v6 3.5l engine.


Could be welsh plugs on side of engine are corroded.
Could be a smaller pipe like a heater hose pipe or an auxilary cooling pipe .Had one of these little extra pipes on a mitsubishi sigma under the inlet manifold that was leaking.
Did you use a coolant in the engine as water can corrode welsh plugs in engines as I found out on my car !.

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I have a 89 pontiac firebird Trans Am "GTA" 5.7L tuned port injected. My engine gets hot somehow and my car has a quick start but lower power afterward. What could the problem be?


Fix the radiator cooling problems. You will damage the engine if you keep running the car in an overheated condition.

1. Replace the thermostat in the cooling system
2. Replace the water pump
3. Flush the cooling system thoroughly and re-fill with the correct coolant. Bleed any air out of the system otherwise you will have problems with air blockages and thus poor coolant flow.

You probably do not know how to do any of this so take it to a reputable workshop or cooling specialist to have it done.

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1 Answer

Antifrezz is leaking from the engine no hoses are broke whers is it coming from


If all your hose and hose clamps are good. There is a good chance that the water pump has to be replaced, once the water pump bearing is worn. The coolant will leak from the weep hole on the water pump when the engine is running and the only way to stop the leak is to replace the water pump.
Thank you for using fixya.
Depending on engine size a 3.1 liter v6 and a 2.2 **** 4cyl. are both located in the front of the engine.
Remove serpentine belt,remove 4 10mm from pulley (v6)(three 13mm for 4cyl.)remove pulley.v6 will have 6 8mm bolts,4cyl. will have 4 13mm bolts-remove clean surfaces install new pump.
About 40 mins.v6,60mins for 4cyl. Be sure to drain coolant before you start, refill whith proper coolant, some 95 up gm require dexcool anti freeze (orange in color).

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I have a water leak on my 96 camaro. It has a 3.8 v6 engine. The water is leaking, not from the water pump itself but from behind the part the water pump mounts on. Not immediately behind the water pump...


It is your Lower Imtake Manifold gasket (LIM). Late Production Camaros and Firebirds used Dex-Cool coolant which nortoriously caused the LMI to actually disintegrate. The failure of the LIM allows coolant to leak to the exterior of the engine as well as into the interior of the engine eventually getting into your oil. Check your oil for a brown milky color... if you have it immediately drive your car to you favorite repair shop and replace the LIM gasket. The GM 3.1L, 3.4L and 3.8L engines are famous for disintegrated LIM gaskets and a good shop will have replaced 30-50 of these in a year. The LMI is part of the reason the public dissed Pontiac and eventually led to its demise (not to mention bad management at GM). Find a shop familiar with the LIM problem and it shouldn't cost more than $500 to replace (or less). If you have any mechanical skill you can replace it yourself... the gasket kit costs about $35 at NAPA AutoParts and it takes a whole Saturday if it's your first time. I just finished replacing the LMI on my wife's '94 Firebird.

Mar 13, 2010 | 1996 Chevrolet Camaro

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99 deville head gasket leak?


A head gasket leak is usually indicated (among other things) by continous overheating of the motor, and subsequent loss of coolant.
It can also be indicated by the presence of engine combustion gas bubbles in the coolant resevoir.
Ensure the coolant system has no external leaks, such as faulty hose/s, radiator etc.

Ensure motor tune or other motor mechanical condition is not the cause of overheating.
I assume the motor is actually running hot.

Check cooling fans are operating ok (as necessary when car warms up):- if not check
1) fuse,
2) relay operation,
3) heat sensor switch.

Check/replace the thermostat,
Check the coolant pressure cap is serviceable & of correct rating,
Ensure cooling system is correctly filled, bleed off any airlocks as necessary when re-filling,
Ensure radiator hose on suction side of waterpump is not collapsing at engine revs above idle (due softening),
If the motor has been severely overheated, the head gasket could be blown - look for combustion gas bubbles in the coolant resevoir.

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Coolant leak on a 1998 pontiac firebird v6


the water pump is directly above it

Sep 04, 2009 | 1994 Pontiac Firebird

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1998 chevy monte carlo leaking coolant


It's a 99% chance of water pump leak or the housing at the timing chain that the water pump sits on.
Water pumps can and do leak one minute then seal themselves.
A cheap fix most use is go to a 7 lb pressure cap on the rad.

Aug 08, 2009 | 1998 Chevrolet Monte Carlo

2 Answers

2000 GMC Sierra leaking coolant


The coolant is more than likely leaking from the water pump "weep" hole. If you were to remove the water pump pulley you would be able to see the coolant track and weep hole.
The leak is an indicator that the seal and/or bearing is wearing out and the water pump needs to be replaced.
If you have some common tools, time and patience, you would be able to change the pump your self. It requires draining the cooling system, removing accessory brackets and hardware then removing and replacing the water pump.
Good luck, let me know.
Regards,

May 14, 2009 | 2000 GMC Sierra

1 Answer

97 pontiac firbird, 3.8 v6 , 140k miles auto.


Front of the engine...looking at the motor...to the driver's side of the alernator...looks like a spark plug almost...has a wire connector going to it. Trying to post the pic...but at least this is a good description.

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2 Answers

My daughter's 1997 Saturn is leaking coolant and overheating..


Coolant leaks can occur anywhere in the cooling system. Nine out of ten times, coolant leaks are easy to find because the coolant can be seen dripping, spraying, seeping or bubbling from the leaky component. So open the hood and visually inspect the engine and cooling system for any sign of liquid leaking from the engine, radiator or hoses. The color of the coolant may be green, orange or yellow depending on the type of antifreeze in the system. The most common places where coolant may be leaking are:Water pump. A bead shaft seal will allow coolant to dribble out of the vent hole just under the water pump pulley shaft. If the water pump is a two-piece unit with a backing plate, the gasket between the housing and back cover may be leaking. The gasket or o-ring that seals the pump to the engine front cover on cover-mounted water pumps can also leak coolant. Look for stains, discoloration or liquid coolant on the outside of the water pump or engine.Radiator. Radiators can develop leaks around upper or loser hose connections as a result of vibration. The seams where the core is mated to the end tanks is another place where leaks frequently develop, as is the area where the cooling tubes in the core are connected or soldered to the core headers. The core itself is also vulnerable to stone damage. But a major factor in many radiator leaks is internal corrosion that eats away from the inside out. That's why regular coolant flushes and replacing the antifreeze is so important.
oses. Cracks, pinholes or splits in a radiator hose or heater hose will leak coolant. A hose leak will usually send a stream of hot coolant spraying out of the hose. A corroded hose connection or a loose or damaged hose clamp may also allow coolant to leak from the end of a hose. Sometimes the leak may only occur once the hose gets hot and the pinhole or crack opens up. Freeze plugs (casting plugs or expansion plugs in the sides of the engine block and/or cylinder head). The flat steel plugs corroded from the inside out, and eventually eat through allowing coolant to leak from the engine. The plugs may be hard to see because they are behind the exhaust manifold, engine mount or other engine accessories. On V6 and V8 blocks, the plugs are most easily inspected from underneath the vehicle.
Heater Core. The heater core is located inside the heating ventilation and air conditioning (HVAC) unit under the dash. It is out of sight so you can�t see a leak directly. But if the heater core is leaking (or a hose connection to the heater core is leaking), coolant will be seeping out of the bottom of the HVAC unit and dripping on the carpet. Look for stains or wet spots on the bottom of the plastic HVAC case, or on the passenger side floor.
Intake Manifold gasket. The gasket that seals the intake manifold to the cylinder heads may leak and allow coolant to enter the intake port, crankcase or dribble down the outside of the engine. Some engines such as General Motors 3.1L and 3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for leaky intake manifold gaskets. The intake manifold gaskets on these engines are plastic and often fail at 30,000 to 80,000 miles. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4.0L V6 engines.
INTERNAL COOLANT LEAKS
There are the worst kind of coolant leaks for two reasons. One is that they are impossible to see because they are hidden inside the engine. The other is that internal coolant leaks can be very expensive to repair.


visit for more info:

http://www.aa1car.com/library/coolant_leaks.htm

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