Question about 1994 Pontiac Grand Am

1 Answer

Heater core if the heater core is bad will it drain from a drain tube beside the ac lines on a 94 grand am

Posted by on

  • hwbiv Jul 11, 2010

    it may can you send a picture



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 447 Answers

If anti-freeze is actually coming out of the drain tube then yes, you could very well have a bad heater core. You may also be able to smell antifreeze while inside the vehicle if it is leaking. [Its a kind of sickly sweet smell] If just clear water is dripping out then this is most likely from normal condensation that is collecting and dripping off of the air conditioning evaporator core as the air conditioner runs. This condensation collects in the heater, a/c housing then drips out of the same little drain. Water from normal condensation will evaporate off of cement or pavement pretty quickly but antifreeze takes quite a while to evaporate away and feels slimy to the touch. It doesn't take much of an antifreeze leak before the cooling system gets low on so make sure you don't run low on coolant which can cause the engine to overheat.

Posted on Jul 11, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Heater core

Sounds like a bad heater core. You will get steam/vapor out of vents from this. If you are referring to the over flow tube being the evaporator drain tube at the firewall its because the heater core shares the same case with the A/C and its filling up with anti-freeze.

Feb 24, 2013 | 1992 Pontiac Grand Am

1 Answer

Condensation under dash when you use the air conditioning

heater core and evaporator drain tube under the dash stopped up. go underneath the vechicle firewall under hood area. go around heater cores coolant hoses some where below that area you should have a drain tube opening, take a shop vac tape small hoses like vacuum line 3/8 inside diameter vacuum out debris in ac drain tube that should help inside leak problem.

Jul 31, 2011 | 1996 Jeep Grand Cherokee

3 Answers

Water on floor passenger side after it rains and after air has been running 2000 grand prix

Ac hose leak?
leaking heater core?

Hint: it leaks when it RAINS

If it were related to the heater core or the AC drain, it would be leaking when it is not raining also, so those diagnoses are not logical.

The grand prix has a long history of floor leaks from seal failures around the air intake under the windshield cowling, where RAIN water runs in.

May 04, 2011 | 2000 Pontiac Grand Prix

1 Answer

Rear heater core lines leaking near firewall

If the tubes going to the rear heater core are the problem , drain the system and replace the bad tube/tubes. If the actual heater core is leaking and you do not want to go to the expense of replacing it, unhook both tubes at the back of the motor , cut out a good section of hose and use it to loop/connect the outlet line and inlet line on the motor side (not the rear heater core side). This will bypass the rear heater core , the front heater core should be adequate to heat the whole car. If you have a pin hole in a section of solid (copper) tubing, you can cut out the bad section and reconnect it with some heater tube and two hose clamps.

Dec 04, 2010 | 1999 Plymouth Grand Voyager

1 Answer

My ac is causing moist air to blow from the vents making the windows fog up. It also drips water from the pasenger side under the dashboard, what needs replaced

check for a heater core leak, and also the ac drain may be plugged from the condensor. if lines are ok , then its the heater core. it will cause window to fog up if bad. more so in winter, it will put a film of anti-freeze all over window on inside!

Aug 20, 2010 | 1994 Pontiac Grand Prix

1 Answer

Leaking coolant beside ac lines on firewall

sounds like a heater hose or heater core has gone bad.

Jul 11, 2010 | 1994 Pontiac Grand Am

2 Answers

1996 grand am 3.1 wet floor on drivers side?

Either your AC drain is clogged or the heater core is failing. Does your heat work well and blow hot air? If so, it's likely a clogged AC drain (although a bad heater core could be the issue). If it does not, your heater core is shot (replacement involves removal of the dashboard).

Nov 18, 2009 | 1996 Pontiac Grand Am

3 Answers

Ac draining back into passenger side of car

plugged drain tube on fire wall needs unplugged

Oct 14, 2009 | 1998 Jeep Cherokee Grand 2WD

1 Answer

Possible plugged AC drain (Chrysler Sebring)

If you are getting clear liquid, with the A/C on, then you have a clogged drain tube. If it is green or reddish, you have a bad heater core. Should be able to have someone blow out the drain tube to clear it out.

Jun 11, 2009 | 2000 Chrysler Sebring

2 Answers

Heater blowing hot air

If you have a new heater core inside, some of the probable causes of your lack of hot air include the two heater hoses, heater control cable, water pump, and damper/vacuum door. A handy diagnostic article that explains this will is the following:

Hope this helps!

May 27, 2009 | 1996 Pontiac Grand Am

Not finding what you are looking for?
1994 Pontiac Grand Am Logo

372 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides