Question about 1994 Pontiac Grand Am

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Its overheating n leaking antifreeze. we notice its leaking by the firewall n inside the car it smells like antifreeze. i need a diagram of the coolant system. the engine size is 2.3L. we replaced the water pump 1 and half years ago.

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  • Pontiac Master
  • 14,381 Answers

You have 2 hoses going in the firewall,to the heater core,the core may be bad and leaking.Here's a link to the heater core removal.

Posted on Nov 30, 2012

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Posted on Jan 02, 2017

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  • 4 Answers

SOURCE: overheating an losing coolant

Make sure there is nothing blocking the air flow in front of the radiator, it could be something small covering it to make these cars overheat. Ive had the same problem in the past.

Posted on Nov 28, 2008

  • 2 Answers

SOURCE: 2000 Pontaic Montana

I have a 2000 montana and mine was doing the same thing. I replaced intake manifold gaskets, thremostat, and water pump. Turns out it my heads were warped. I had them taken to a machine shop and it has seemed to fix my overheating problems.

Posted on Jan 06, 2009

  • 1 Answer

SOURCE: Leaking coolant water

This L shaped hose is a drainage for the heater core compartment. Once we removed the panel to the heater core it was obvious the heater core was leaking into this compartment. We changed the heater core out and the problem has been solved :)

Posted on Mar 24, 2009

  • 1 Answer

SOURCE: service engine soon light keeps coming on. Now low coolant light

I would start by doing an oil change myself so you can examine the oil and look for water/antifreeze in it. You will be able to see it separate from the oil and you can smell the antifreeze. If there is then you have a leak between the water jacket and the heads somewhere. More than likely the LOWER intake gasket is leaking into the head. You said they replaced a gasket but was it the UPPER or LOWER? If it was the LOWER did they use RTV in the correct areas? Did they torque the intake bolts to the correct pressure and install the bolts correctly? I know you don't have these answers but these could all be part of the problem. It may be leaking more at #2 cylinder and causing it to foul more than the others. Also just because a mech pressurized the coolant system and didnt see any change in pressure (hopefully he wasn't just looking for visible leaks) the issue may not happen until the engine is hot, as metals behave differently when heated, especially aluminum which the LOWER intake is made. Have a mechanic or mechanically inclined friend (gearhead) remove the #2 plug wire, then kick the engine a few times without starting it, enough to let any fluid get into the chamber, this would include gas btw. Then remove the plug and look for any wet residue on the plug, gas will evap. quickly, antifreeze/oil won't. again try to smell the residue and if necessary, lightly touch some to your tongue, antifreeze has a sugary sweet taste that is easily detectable. Remember any time you are working with chemicals such as waste oil and especially anti freeze, minimize spills and clean them up quickly and completely and place the spent fluid in a sealable container and take them to a collection center for disposal. Waste oil is a carcinagin (cancer causing) agent and antifreeze (glycol) new or old will kill any animal (child, dog, cat,etc) that ingests it. Many auto parts stores and some other retailers that sell oil and antifreeze will take your wastes if you bought the replacement fluid from them, check before you buy.

Posted on Apr 04, 2009

USfalcon
  • 175 Answers

SOURCE: 2001 GRAND AM KEEPS OVERHEATING

i believe the heater core broke or got crak chech the thermostat again

Posted on Apr 07, 2009

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1 Answer

Car overheating smell antifreeze outside the car


The lower end of the top coolant hose is connected to the water pump with a fitting that has an "O" ring . The fitting rusts away causing a leak. The fitting is secured to the engine block with two small bolts just past the end of hose. Remove the bolts and pull it out You will likely need to replace the fitting and "o" ring. Many head gaskets have been lost due to this. LOL

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You can drain the coolant out of your car by taking off the lower radiator hose. This will get most of the coolant out of your car. If you have a hose leaking under the hood you may smell coolant inside the car, but it shouldnt be too bad, if you have a leaking hose however it should be pretty obvious and your car may even be overheating.

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