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03 Grand AM cooling fans wont work and over heating issues


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gramps
User

Dec 16, 2012, 1:58 PM

Post #26 of 34 (2606 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  


In Reply To
The fans worked properly, yet it still overheated? So, this isn't a fan problem at all? Are you sure you even got all the air out of the system?



Please bare with me but as I explained in my op I have tried bleeding the system but continue to have issues. I watched several videos about bleeding a cooling system but got somewhat conflicting advice from them. Is it possible, as im not a mechanic, that air in the system can cause all these problems? And what are the proper procedures for bleeding the system. It will have to be done at this point no matter what because Ive watered down the antifreez to the point I need to drain the system to add to it.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 16, 2012, 2:05 PM

Post #27 of 34 (2591 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

You can drain a little out and start adding pure coolant, not 50/50. This engine should have bleeder screws. Open the bleeders while filling until air stops coming out of them. Fill radiator to top, replace the cap and fill the reserve. Now run the engine until the thermostat opens and then drive it around the block. Now park it and leave it alone until it is stone cold. Do not remove the cap until completely ice cold. Top off the radiator and repeat the whole process again. Keep repeating until the radiator remains full after cooling off.

Now run the engine in park and observe what the temp and fans do.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



gramps
User

Dec 16, 2012, 2:18 PM

Post #28 of 34 (2587 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  


In Reply To
You can drain a little out and start adding pure coolant, not 50/50. This engine should have bleeder screws. Open the bleeders while filling until air stops coming out of them. Fill radiator to top, replace the cap and fill the reserve. Now run the engine until the thermostat opens and then drive it around the block. Now park it and leave it alone until it is stone cold. Do not remove the cap until completely ice cold. Top off the radiator and repeat the whole process again. Keep repeating until the radiator remains full after cooling off.

Now run the engine in park and observe what the temp and fans do.



Ok. Only question is, I dont have a radiator cap only the resivoir cap. Same prosess?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 16, 2012, 2:22 PM

Post #29 of 34 (2580 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

Yes, same process. Just do it through the reservoir.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Dec 16, 2012, 2:50 PM

Post #30 of 34 (2574 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

Man, this is getting confusing......This is why it's better to start off with original problem your are having & everything you have done to that point......Not what you think the problem is and advise down that road.

Just so you know the engine only requires the cooling fans at idle & under high load. Just driving down the road under a normal load the cooling fans aren't required. If you overheated going down the highway, it's not a cooling fan problem. It could be a restricted radiator, exhaust gases getting into the cooling system, something restricting the coolant flow....

Air in the system could cause that. The best way to avoid air pockets is to vacuum fill the system. If that isn't possible, you fill the system as much as you can, put the cap on & run the engine until it get to the 3/4 mark, shut it off & let engine cool down completely before removing the cap. Once it's cool IF there was air in the system, it will have worked itself out & the reservoir will now be low....


gramps
User

Dec 16, 2012, 4:59 PM

Post #31 of 34 (2564 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

Well after 2 full cycles of bleeding the system I have much better heat but its still not consistant. Although the cooler air lasts much shorter now. Done for the night now but wondering how many times I may have to do this to entirely exaust the system of air?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 16, 2012, 5:38 PM

Post #32 of 34 (2552 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  


Quote
but wondering how many times I may have to do this to entirely exaust the system of air?


Until there's no more air. You need to drive it after it gets up to temp every time to move the air pocket around.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Gpaw
New User

Feb 9, 2015, 12:57 PM

Post #33 of 34 (1951 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

Your post shows that you are savvy on this issue. Here is my problem. I bought this car just to flip. Runs really well. The cooling fans are not coming on. I have verified that the fan motors both work (by jumping the relay together. I think it was the 30 and 87 relay points together. They both turn on when jumped. I hook my scanner up and the temperature goes up to 225 without the fans coming on. I got nervous and didn't want to take it any higher. Here is my question. There is a relay for each fan. There is also a fuse for each fan in the same fuse/relay console under the hood. One of the relays has a large 30 amp fuse that is working properly (hot on one side all the time and both sides when the relay closes the circuit). The other relay has a small size fuse (15 or 20 amp I think), that has no power on either side of it. When I look at the wiring diagram, it shows a row of constant hot wires with that fuse being one of them. How can I not have power to that fuse at all?? I haven't taken the top off of the fuse box to see if I have a broken wire yet. I am baffled. Thanks for any help you can give me.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Feb 9, 2015, 1:38 PM

Post #34 of 34 (1948 views)
  post locked   Re: 03 Grand AM cooling fans wont work and over heating issues  

Thread is from 2012 - Please start your own - I'm locking it to archives,


T







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