Help! Car Won't Heat Up? - Ford Mustang Forum
 
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post #1 of 13 (permalink) Old 11-20-2006 Thread Starter
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Exclamation Help! Car Won't Heat Up?

I don't think my temp gauge is stuck, and if not my car won't heat up. Even after driving it several hours and when I turn on the heater, the air blowing out is very cold. I've flushed the radiator and made sure it was full and the usual stuff. I'm about to check the thermostat and make sure it is not stuck open. Could that be it? If not, what else?

1998 Mustang GT-SVO Headers-Steeda Tri-Ax-Flowmaster American Thunder Mufflers Dumped-Eibach Springs-Edelbrock Shocks-Tokico Struts-MM CC Plates-CAI

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post #2 of 13 (permalink) Old 11-21-2006
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That's gotta be it. Or it might gave a 160º t'stat in it. Get a new one, and don't get anything lower than 180º. I'd recommend 192º.

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post #3 of 13 (permalink) Old 11-21-2006
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you might not have a have a thermostat in it or its broke
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post #4 of 13 (permalink) Old 11-21-2006
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mine is kind of like that barely a luke warm heat but temp guage comes up like normal a little more with a/c and or headlights on, it used to get hotter, no leaks no overheating my shoes get hotter from the radiant heat from the headers lol. dont really need the heater for me just the defrost on the windshield when the wipers cant get it.

91'5.0 lx notch auto, Trick flow Track heat Intake,75MM TB,75MM egr spacer,75MM pro-flow MAF w/k&n filter velocity stack combo, high flow 3" intake tube 1" intake spacer, stock heads,stock cam,1.5" jba shorty headers, 2.5" pro-chamber h- pipe ,2.5"MAC cat back,3.55's 1.7 RR's 255lph, adj. aeromotive regulator, MSD coil,cap, rotor,wires.
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post #5 of 13 (permalink) Old 11-21-2006
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I've been having the same problem with my 3.3L since the day I bought it. I
replaced the thermostat with a 180 degree. I replaced my heater core, I flushed
my cooling system twice. The temp guage works mint. It only goes near "normal" when I feel a little heat. I discovered If i clamp off my lower rad hose It will slowly
heat up. I have determined it to be my water pump????? I am changing it this weekend. It BETTER work!!

1993 GT Reef Blue/Titanium, leather, Loaded. Mods; BBK Cold Air Intake, EGR elimination, FRPP Smog pump eliminator, Hurst Comp Plus Shifter, FRPP 3:73 gears, FRPP carbon fiber clutch packs, BBK ceramic coated shorties, Magnaflow Catback


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'89 Black/Titanium GT 5 spd, '90 Black LX Hatch 5 spd, ...
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Let me know how it goes and if it fixes the problem.

1998 Mustang GT-SVO Headers-Steeda Tri-Ax-Flowmaster American Thunder Mufflers Dumped-Eibach Springs-Edelbrock Shocks-Tokico Struts-MM CC Plates-CAI

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post #7 of 13 (permalink) Old 11-21-2006
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My vote is on the thermostat being stuck open. Just be happy it stuck open and not closed:hihi:

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post #8 of 13 (permalink) Old 11-21-2006
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Quote:
Originally Posted by Kyle F
My vote is on the thermostat being stuck open. Just be happy it stuck open and not closed:hihi:
But I changed mine twice with no results. Thermostat was obviously my first guess. If the water pump doesn't fix it, I'm putting in a 212 degree thermostat.

1993 GT Reef Blue/Titanium, leather, Loaded. Mods; BBK Cold Air Intake, EGR elimination, FRPP Smog pump eliminator, Hurst Comp Plus Shifter, FRPP 3:73 gears, FRPP carbon fiber clutch packs, BBK ceramic coated shorties, Magnaflow Catback


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'89 Black/Titanium GT 5 spd, '90 Black LX Hatch 5 spd, ...
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post #9 of 13 (permalink) Old 11-21-2006 Thread Starter
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I got a 195 t'stat, we'll see how it goes.

1998 Mustang GT-SVO Headers-Steeda Tri-Ax-Flowmaster American Thunder Mufflers Dumped-Eibach Springs-Edelbrock Shocks-Tokico Struts-MM CC Plates-CAI

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post #10 of 13 (permalink) Old 11-23-2006 Thread Starter
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I looked at it last night and it's gonna be tough. There is a 90 degree hose there thats tough to get off. After that, I can't fit a socket on the bolt and I'd be lucky to get 1/16 of a turn with a wrench. What's the best way to get it off?

1998 Mustang GT-SVO Headers-Steeda Tri-Ax-Flowmaster American Thunder Mufflers Dumped-Eibach Springs-Edelbrock Shocks-Tokico Struts-MM CC Plates-CAI

RIP-1989 LX 5.0
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It's not as hard as it looks. I've done it about four times (for different reasons, not that your problem is all that common) and I also have an '89 LX... though the engine is what matters. Just unbolt the t-stat housing... you can even get a socket and a short extension or use a wrench. I've done it. Make sure you losen the clamps on the bypass hose and just pull the housing off. No need to worry about the gasket since you are going to replace it anyway. Now you can just carefully twist the housing to get it off of the hose. There you have it! The tricky part is putting the hose back on the t-stat housing and bolting the housing back on to the intake. Just be patient.
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Replaced water pump and installed 192* t-stat. Didn't fix it. Found out one of my
heater core hoses was plugged! Now I have HOT heat!

1993 GT Reef Blue/Titanium, leather, Loaded. Mods; BBK Cold Air Intake, EGR elimination, FRPP Smog pump eliminator, Hurst Comp Plus Shifter, FRPP 3:73 gears, FRPP carbon fiber clutch packs, BBK ceramic coated shorties, Magnaflow Catback


Gone but not forgotten: '83 Charcoal GT 5 spd,
'89 Black/Titanium GT 5 spd, '90 Black LX Hatch 5 spd, ...
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Quote:
Originally Posted by spy23714
I looked at it last night and it's gonna be tough. There is a 90 degree hose there thats tough to get off. After that, I can't fit a socket on the bolt and I'd be lucky to get 1/16 of a turn with a wrench. What's the best way to get it off?
I use a wrench on that lower bolt, a ratcheting wrench comes in handy. I usually just get it loose enough, to where I can back it out with my fingers. Try oiling the 90º bypass hose, when you go to reinstall it.

'88 GT convertible, 5 speed, 3:08 gears, A9L Mass Air conversion. Mac shorty headers and H-pipe, Magnaflow catback.
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