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Author
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Topic: overheating
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65conv
Journeyman Posts: 28
From: wpb, fl
Registered: May 2002
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posted 06-06-2002 07:17 PM
   
question have a 65/289. overheats after about 10 minutes normal running. radiator 'burps' up coolant when running with cap open. is this the water pump or the thermostat or something worse?? thanks
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Scott (69Mach)
Gearhead Posts: 502
From: Walnut Creek, CA USA
Registered: Jun 99
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posted 06-06-2002 07:24 PM
If it were me, I'd:1) Check the shroud (got to have one)
2) Check for water flow (is the pump working)
3) Check my timing
4) Check my plugs for lean burn
5) Check compression/leak down for a gasket/head leak. If it isn't one of those three, I'd check my fridge for cold beer, cause I'd need several to figure out what's up. Good Luck, Scott [This message has been edited by Scott (69Mach) (edited 06-06-2002).]
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fastcomet289
Gearhead Posts: 140
From: ventura ca
Registered: Feb 2002
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posted 06-06-2002 07:25 PM
thermostat could be rusted shut, you gauge, if its the original might be wrong, broken water pump impellers, radiators clogged with bugg!! j/k anyone else?------------------
1970 mach1 351c
1965 comet 289
http://mustangsandmore.50megs.com/fastcomet289.html
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Dave Gibson
Moderator Posts: 7549
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99
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posted 06-06-2002 09:50 PM
'65,
Since you are in south florida, you need a fan shroud. If the shroud is there I would next check the thermostat and the radiator. You should have a 180 degree thermostat and a 13 pound radiator cap. Check your radiator to see if it is clogged internally. You may have to drain some coolant. If your radiator has a lot of crud in it, pull it out and have it rodded. This will remove all the crud. Start with the simple things and work your way through the cooling system.  Dave & Terri ------------------
Poison Ivy (Dave's)
'65 Fastback Modified 289 4V, C-4, dual exhaust, styled steel wheels, rally pac, A/C
Blue Belle (Terri's)
'66 Coupe, Silver Blue Metallic, 351W 2-V, 4 speed, A/C, "For Sale"
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Calcat
Journeyman Posts: 75
From: Los Angeles, CA
Registered: Feb 2002
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posted 06-07-2002 02:12 AM
Keeping it really simple, I would run the engine with the cap off first to bleed out any air in the system. Then check that the cap is at least 13lbs and has no leaks. After that follow the above posts.
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ice'68
Gearhead Posts: 127
From: Fresno, CA
Registered: Apr 2002
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posted 06-07-2002 04:05 PM
Get one of those "sniffers" and see if any exhaust gases are leaking into the Radiator. This happen to me, blown head gasket. Car would overheat after about 10 min.
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65conv
Journeyman Posts: 28
From: wpb, fl
Registered: May 2002
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posted 06-08-2002 10:44 AM
thanks for all the suggestions. turned out to be the thermostat. that thing had barnacles on it! are there any issues/problems to running the engine with no thermostat at all? thanks
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bluestreek
Gearhead Posts: 1332
From: Athens,GA
Registered: Jul 2001
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posted 06-08-2002 01:20 PM
Seems like there was a long discussion on this subject once. But in the old days, it was common practice to run without a t-stat in warm weather until you could buy a new one. I think most of us agreed that the thermostat orifice keeps the water from circulating through the radiator too quickly and also allows the engine to reach a optimum temp in the Winter. It's an integral part of the cooling system and should me maintained.Dan
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mellowyellow
Gearhead Posts: 5739
From: So. Fl.
Registered: Aug 2000
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posted 06-08-2002 03:59 PM
This would be an ideal time to flush the cooling system. If your stat had barnacles, you have crap inside. Then the radiator should be flushed out at a rad. shope. A stat is nec. Also, living in S Fl, I.m South of you, a 3 row radiator w/shroud is the ticket. I have a 65 cv that has a 4 row-have AC. The condenser robs some cooling. Some time back, a guy in Lauderdale had to remove his freeze plugs and pressure wash out the block, it had that much crud. Our hard water doesn't help.
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65conv
Journeyman Posts: 28
From: wpb, fl
Registered: May 2002
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posted 06-09-2002 11:54 AM
thanks. i flushed out the block, but youre right, i think a new 3 row with a shroud is in the cards. thanks alot.
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beachbum
Gearhead Posts: 162
From: Florida
Registered: Oct 2001
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posted 06-11-2002 11:15 AM
I live in South Florida and had a overheating problem with my 289. I removed my radiator, had it cleaned, and rodded , installed a five bladed fan and shroud, haven't had any problems since.
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fastcomet289
Gearhead Posts: 140
From: ventura ca
Registered: Feb 2002
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posted 06-11-2002 11:44 AM
The water here in S. Ca is not that great either, thats why i buy distilled water to put in the rad. Is you water supposed to come out of the fauset green? j/k------------------
1970 mach1 351c
1965 comet 289
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