ac and over heating

stng87 · 07-31-2001, 06:05 PM

I just drove from Nebraska to La. and i noticed a few things along the way. First thing is that the car seems to run right at 205-210 degrees the whole way. This may be because I added a hotter thermo since it was winter in ohio. But even then the hottest it would be is 195 (which it likley is). Would the car run 10 degrees hotter then what the thermo is rated at?
I havent tried replacing the cap ot thermo or anything yet. But the mixture may be lopsided in favor of the antifreeze. Will that cause it to run hotter?

The other thing I noticed is that when i run the ac, the temp jumps to 230 and that sux, then it takes an eternity to cool down after i turn ac off. This all while driving on the interstate. Any ideas?

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1987 black with t-tops. Cobra intake, 1.7 cobra crane rollers, gt40p's, bbk shorties, off road h-pipe, adj. FPR, Tremec t-5z, 65mm TB, 4.10's, adj cable, 155lph fuel pump, Ram clutch kit,
275-60-15 BFG TA's on Welds, Hurts shifter,Former AOD Semper Fi

Capri306 · 08-01-2001, 08:35 AM

By looking at your signature and at the direction my friends' cars and my own have gone (mod wise), I'd recommend getting a new 3-row radiator for your ride. One friend of mine had his gauge up to the 2nd from the top mark every time we'd ride. Now with the 3-row he's had nothing but cool temps, as in the 160-200 range. That's with a 197* thermostat, too. They're about $150 at AutoZone, brass/copper construction, and have a lifetime warranty. Nice gloss black finish, too.

Just go with the 197 T-stat, replace the cap (should be done every two years or so anyways, along with a flush & refill of fresh 50/50 coolant mixture), and if you're still stuck, get a new radiator. You're looking at a radiator that's over 10 years old, anyways, so if nothing else replace it just so it doesn't leave you walking one day. Don't even bother with a crappy 2-row, they ain't worth it. Leave those for the 6-cylinder Fairmonts.

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch

stng87 · 08-01-2001, 11:56 AM

Oops, i forgot to add that i have a 3 row ford motorsport radiator already. I do need to update my sig. I think i will get a new cap and flush it out. Thanks capri.

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1987 black with t-tops. Cobra intake, 1.7 cobra crane rollers, gt40p's, bbk shorties, off road h-pipe, adj. FPR, Tremec t-5z, 65mm TB, 4.10's, adj cable, 155lph fuel pump, Ram clutch kit,
275-60-15 BFG TA's on Welds, Hurts shifter,Former AOD Semper Fi

Mr 5 0 · 08-01-2001, 03:30 PM

stng87:

When you flush it out, try a 30/70 antifreeze/water mixture for the warm months.
Water cools better than antifreeze.
Add a bottle of Water Wetter if you can find it. Pep Boys may have it.
That stuff works well if your cooling system is otherwise in good condition.

stng87 · 08-02-2001, 12:24 AM

thanks Mr 5.0. Ill be sure to try that.

2FastLX · 08-02-2001, 06:53 AM

How long has that radiator been in the car and what kind of water are you putting in it? I use only distilled water to prevent the radiator from getting all limed up.

------------------
Gunning for 12's!

Buy your parts here
ICQ# 42269241

07-31-2001, 06:05 PM	#1
stng87 Registered Member Join Date: Sep 2000 Location: southern california Posts: 329	ac and over heating I just drove from Nebraska to La. and i noticed a few things along the way. First thing is that the car seems to run right at 205-210 degrees the whole way. This may be because I added a hotter thermo since it was winter in ohio. But even then the hottest it would be is 195 (which it likley is). Would the car run 10 degrees hotter then what the thermo is rated at? I havent tried replacing the cap ot thermo or anything yet. But the mixture may be lopsided in favor of the antifreeze. Will that cause it to run hotter? The other thing I noticed is that when i run the ac, the temp jumps to 230 and that sux, then it takes an eternity to cool down after i turn ac off. This all while driving on the interstate. Any ideas? ------------------ 1987 black with t-tops. Cobra intake, 1.7 cobra crane rollers, gt40p's, bbk shorties, off road h-pipe, adj. FPR, Tremec t-5z, 65mm TB, 4.10's, adj cable, 155lph fuel pump, Ram clutch kit, 275-60-15 BFG TA's on Welds, Hurts shifter,Former AOD Semper Fi

08-01-2001, 08:35 AM	#2
Capri306 Moderator Join Date: Sep 1998 Location: Grand Rapids, Michigan, USA Posts: 1,001	By looking at your signature and at the direction my friends' cars and my own have gone (mod wise), I'd recommend getting a new 3-row radiator for your ride. One friend of mine had his gauge up to the 2nd from the top mark every time we'd ride. Now with the 3-row he's had nothing but cool temps, as in the 160-200 range. That's with a 197* thermostat, too. They're about $150 at AutoZone, brass/copper construction, and have a lifetime warranty. Nice gloss black finish, too. Just go with the 197 T-stat, replace the cap (should be done every two years or so anyways, along with a flush & refill of fresh 50/50 coolant mixture), and if you're still stuck, get a new radiator. You're looking at a radiator that's over 10 years old, anyways, so if nothing else replace it just so it doesn't leave you walking one day. Don't even bother with a crappy 2-row, they ain't worth it. Leave those for the 6-cylinder Fairmonts. ------------------ Capri306, Moderator, The Mustang Works Online 1979 Mercury Capri, 5.0L -- C4 -- 2.73 1987 Mustang LX Notch

08-01-2001, 11:56 AM	#3
stng87 Registered Member Join Date: Sep 2000 Location: southern california Posts: 329	Oops, i forgot to add that i have a 3 row ford motorsport radiator already. I do need to update my sig. I think i will get a new cap and flush it out. Thanks capri. ------------------ 1987 black with t-tops. Cobra intake, 1.7 cobra crane rollers, gt40p's, bbk shorties, off road h-pipe, adj. FPR, Tremec t-5z, 65mm TB, 4.10's, adj cable, 155lph fuel pump, Ram clutch kit, 275-60-15 BFG TA's on Welds, Hurts shifter,Former AOD Semper Fi

08-01-2001, 03:30 PM	#4
Mr 5 0 Conservative Individualist Join Date: May 1997 Location: Wherever I need to be Posts: 7,487	stng87: When you flush it out, try a 30/70 antifreeze/water mixture for the warm months. Water cools better than antifreeze. Add a bottle of Water Wetter if you can find it. Pep Boys may have it. That stuff works well if your cooling system is otherwise in good condition.

08-02-2001, 12:24 AM	#5
stng87 Registered Member Join Date: Sep 2000 Location: southern california Posts: 329	thanks Mr 5.0. Ill be sure to try that.

08-02-2001, 06:53 AM	#6
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	How long has that radiator been in the car and what kind of water are you putting in it? I use only distilled water to prevent the radiator from getting all limed up. ------------------ Gunning for 12's! Buy your parts here ICQ# 42269241