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03 Grand AM cooling fans wont work and over heating issues
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 16, 2012, 2:05 PM
Post #27 of 34
(3729 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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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.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 16, 2012, 2:22 PM
Post #29 of 34
(3718 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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Yes, same process. Just do it through the reservoir.
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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.
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Sidom
Veteran
/ Moderator
Dec 16, 2012, 2:50 PM
Post #30 of 34
(3712 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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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....
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gramps
User
Dec 16, 2012, 4:59 PM
Post #31 of 34
(3702 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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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?
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Gpaw
New User
Feb 9, 2015, 12:57 PM
Post #33 of 34
(3089 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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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.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 9, 2015, 1:38 PM
Post #34 of 34
(3086 views)
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Re: 03 Grand AM cooling fans wont work and over heating issues
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Thread is from 2012 - Please start your own - I'm locking it to archives,
T
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