Heater switches from cold to warm but doesn't get really hot. Just replaced the thermostat so I know the motor is warming up. Vacuum issue??
Thanks for any help
Heater issue
Heater issue
2002 Corvette Z06
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)
Re: Heater issue
You check your coolant? I know this just happened to my truck and the water pump was bad and it had no coolant.....226gpd wrote:Heater switches from cold to warm but doesn't get really hot. Just replaced the thermostat so I know the motor is warming up. Vacuum issue??
Thanks for any help
93 Cobra Teal/Gray #3223 -Stock (Borla catback)
*various other 93 cobras, #15, #4105, #2587, #539
#2381, #4724, #298, #1153 RIP
*various other 93 cobras, #15, #4105, #2587, #539
#2381, #4724, #298, #1153 RIP
Thanks for the reply..Coolant is good. I'm thinking the door that switches from hot to cold is sticking...but I'm not sure..I've owned many fox body Mustangs but never ran into this problem before.
2002 Corvette Z06
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)
The cable end tends to break the flapper for the heat to cold, may have to follow the cable to see what is happening.
93 Black on black sunroof #1835
04 Comp. Orange Coupe #348
93 Reef Blue SSP LX Coupe (SOLD)
91 Wild Strawberry Coupe (SOLD)
93 Teal and Black #1521 (SOLD)
93 Vibrant Red and Leather #3038 (SOLD)
04 Mystichrome Coupe #529 of #1010 (SOLD)
04 Comp. Orange Coupe #348
93 Reef Blue SSP LX Coupe (SOLD)
91 Wild Strawberry Coupe (SOLD)
93 Teal and Black #1521 (SOLD)
93 Vibrant Red and Leather #3038 (SOLD)
04 Mystichrome Coupe #529 of #1010 (SOLD)
- SPEEDFREEK
- Posts: 2211
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Is the temp coming up like normal? I've seen new thermostats that are bad and stick open. I just did one in another car that did that. It was stuck open and the heat would just get warm it wouldn't get hot.
89 Saleen SSC #168 10k miles
90 Saleen Vert #93 26k miles
92 Cobra Prototype 8k miles
93 Cobra #3032 Teal/gray cloth 6k miles
93 Cobra #3620 Black/Gray leather 12k miles
93 Cobra #4993 Teal/Gray Leather
93 Yellow SE 5spd, 4k miles
93 5.0 coupe 19k miles
94 GT 7k miles
92 25th 1LE Z28 900 miles
90 Saleen Vert #93 26k miles
92 Cobra Prototype 8k miles
93 Cobra #3032 Teal/gray cloth 6k miles
93 Cobra #3620 Black/Gray leather 12k miles
93 Cobra #4993 Teal/Gray Leather
93 Yellow SE 5spd, 4k miles
93 5.0 coupe 19k miles
94 GT 7k miles
92 25th 1LE Z28 900 miles
- KeystoneJohnny
- Posts: 79
- Joined: Fri Mar 23, 2012 2:54 am
- Location: Pittsburgh, PA
I would say this or the flap due to the cable issue as mentioned by the modMike S. wrote:Probably a partially plugged hater core. Try flushing it out in both directions with a garden hose, a lot of ugly brown muck should wash out. If still luke warm, flush with pool acid cut 1:1 with water, let sit for 5 minutes, flush again. Repeat if necessary. That should do it.
-MJS
Toys:
1993 Ford Mustang COBRA # 1118 Black/Black Cloth
2010 Dodge Ram LARAMIE SPORT 4x4 CC.
2005 & 2006 Honda Aquatrax Turbo's
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2010 Kawasaki Z1000
FOR SALE:
2005 Ford Mustang Roush Stage1 (For Sale)
1993 Ford Mustang COBRA # 1118 Black/Black Cloth
2010 Dodge Ram LARAMIE SPORT 4x4 CC.
2005 & 2006 Honda Aquatrax Turbo's
1997 Stingray 190 Bow Rider SS Prop
2010 Kawasaki Z1000
FOR SALE:
2005 Ford Mustang Roush Stage1 (For Sale)
Re: Heater issue
Thanks for all the input..Apparently the heater core was just dirty. I flushed it out today and it is warmer.
2002 Corvette Z06
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)
2000 Saleen 00-0134 (SOLD)
1993 LX 5.0 Coupe Reef Blue (SOLD)
1997 Saleen #59(SOLD)
93 Cobra #418 (SOLD)
2000 Saleen SC281 Convert. (SOLD)
93 Cobra #3398 Black/Gray(SOLD)
93 Cobra #4019 Red/Gray(SOLD)
2003 Cobra Convert. (SOLD)
1996 Saleen (SOLD)
1989 Saleen Convert. #80(SOLD)