Question about 1996 Pontiac Firebird

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I have a 96 firebird with the LT1 engine and it keeps loosing coolant but we have checked to see if there is water in the oil and there isnt so we dont know what the problem could be any idea?

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  • Rob
    Rob May 11, 2010

    Are you visually seeing coolant on the ground when it leaks, or is the low coolant light just coming on often? Get a coolant pressure tester from an auto parts store and test the radiator cap and the coolant system first.

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Try cylinder head for cracks. maybe coolant is evaporating in cylinders. not neccessarily going in oil.

Posted on Dec 26, 2008

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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.

Dec 25, 2012 | 1989 Pontiac Firebird

1 Answer

96 Firebird, Replaced water pump, fuel pump - Now blows head gasket.


Get yourself another mechanic. This guy is not doing his job. It shouldn't cost $1600 to change a water pump and fuel pump. No proper mechanic would remove a thermostat to replace the O-ring and put the old thermstat back in. It wouldn't be uncommon for the coolant level to drop after changing the thermostat. It probably only needs to be topped up. No, the motor doesn't have to come out to replace the head gasket and I don't see it costing $2500. Before you spend any more money there, take the car somewhere else and get another opinion. I bet that if you fill up the coolant bottle for 2 0r 3 days it will stop losing coolant. Hope this helps.

May 10, 2012 | 1998 Pontiac Firebird

1 Answer

I have 1994 firebird with a LT1 it keep running hot and over flowing


This could be a number of things:

How long has it been since belts, hoses and antifreeze have been changed? If more than 3- 4 years, start there and also replace the thermostat.

If the temp gauge climbs steadily and then drops down, replace the thermostat, taking into account the age of belts, hoses and antifreeze if they need to be changed out.

Consider whether the cooling system is full and if it has a 50/50 mix of coolant and water or more water than coolant. If the latter and all else has been maintained timely, drain and refill with the proper mix.

Do you have any leaks showing that might indicate that the water pump is bad. check the pump itself for signs of coolant coming out of the weep hole, which is a sign that the pump is going out.

Do the cooling fans come on when the car is hot? if not, you will need to repair.

If none of that , it could be the radiator has a plug somewhere.

Aug 06, 2011 | 1994 Pontiac Firebird

3 Answers

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

1 Answer

96 Trans am engine trouble code


bank 1 tell you there is a missfire on the right bank of the engine. check all the spark plugs and wirs , then the ignition modules.

Sep 30, 2009 | 1996 Pontiac Firebird

1 Answer

01 pontiac firebird losing coolant fast and white goo on oil cap


Head gasket, or intake manifold gasket is letting coolant leak by, into the engine.

Jun 09, 2009 | 2001 Pontiac Firebird

1 Answer

Engine knocking hard in lower part


replaced the old one could do it again

Oct 25, 2008 | 1996 Pontiac Firebird

3 Answers

95 FIREBIRD 5.7 LITER


I have seen on manyengines that using high performance plugs can cause problems like your's. If you used split-fire's or platinum 4 plugs change them back to OEM sytle plugs and your problem should be solved. If you used OEM plugs check that none are loose or cross threaded as this can cause a loss of compression.

Let me know what type of plugs you iinstalled and I can try to assit further.

Jun 23, 2008 | 1995 Pontiac Firebird

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