99 Taurus heat cools quickly after fa...
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Happy Valley, Canada

#61 Jan 17, 2009
taurusbaby22 wrote:
My '99 Taurus is blowing cold air, no heat. Received an estimate of over $800 dollars to replace the heating core (gasp). I will try flushing the heater core before before spending a dime to replace it. I really appreciate the comments and suggestions on this site.
Hey, Had the same problem...invested $75.00 in a parts car. best investment I ever made. YOu will have to replace the rack and pinion and bearings soon anyhow.
charles

Bay Minette, AL

#62 Mar 10, 2009
rich wrote:
had the same problem, flushed the heater core with liquid plumber and that did the trick. saved #$$ by doing it myself assisted by my nephew's instructions, he's a mechanic at a local garage. took about an hour in the back yard at night in 20 degree weather but that damn heater blows plenty of hot air now
. how did you flush it with liquid plumber
charles

Bay Minette, AL

#63 Mar 10, 2009
how did you flush it with liquid plumber
w5kcm

Fort Worth, TX

#64 Mar 13, 2009
Aaron wrote:
I also have a '99 Taurus (SOHC) with no heat.
I replaced the water pump but was surprised that it had little corrosion. The problem is either the heater core or I heard there is a temperature switch somewhere in the engine compartment. Gonna have to check into that one.
I have a 99 Ford Taurus and the heater has failed. After reading a bunch of info here on the web, I have, 1: Back flushed the heater core several times. 2: Replaced the thermostat. 3: Flushed the complete cooling system with Prestone flush. 4: Closed off the bypass hose with a gate valve. 5: Replaced the water pump.(It showed very little corrosion and was still in good shape) 6: Replace the plastic coolant tank. It was cracked.
I am now in the process of 1: Replacing the Heater Control Valve. 2: Flush out heater core with liquid plumber. 3: Replace heater core if #2 doesnt get it done. 4: There is a Ford notice regarding some kind of air diverter door in the heater that maybe causing this.? My wife is freezing to death in this car!!!
w5kcm

Dallas, TX

#65 Mar 23, 2009
Well I flushed out the heater core with the Liquid Plumber (Drano Gel Pro) and that worked well. The heater is now blowing flames. There was a bunch of rust came out. I bypassed the steel heater tubing with standard 5/8 heater hose. After about a week it is still doing well. Contact me at [email protected] if you need more info.
Tony

Baltimore, MD

#66 Oct 8, 2009
Your water pump is not circulating enough water to the heater core.The water pump propellers are worn down. It's putting out enough water to keep the engine cool. I have a 99 Taurus flushed two or three times had heat for while. Just had my water pump changed two days ago heater is working just fine good hot heat now. It wasn't my heater core just my water pump
VAMAN

Charlottesville, VA

#67 Oct 26, 2009
My 98 Taurus drove me crazy trying to fix the heater. I tried flushing the system many times. I replaced the waterpump and thermostat. I checked the blend door and found it to be operating properly. I never replaced the heater core. The Taurus heater core replacement can be very costly so I wanted to be sure it was bad before I replaced it. I was never convinced that the heater core was bad because water from a garden hose would always flow freely through it. I was convinced that my cooling swstem was air locking and not allowing the coolant to flow through the heater core. I remembered reading that Motorcraft thermostats had a small hole in them. I had not noticed any kind of hole in my aftermarket thermostat. I bought a Motorcraft thermostat for my Taurus. It did have a small ball type check valve in it. Some mechanics call it a jiggle valve and from what I can find out its only purpose is to allow air to escape from the system. To properly install it on a Taurus the thermostat jiggle valve needs to be in the 12:00 position. After I installed the Motorcraft thermostat with the jiggle valve, I have had good heat. I'm sure this could help many other readers. Before you spend a lot of money on repairs please check to be sure you have the right thermostat. The Motorcraft thermostat is more costly than most but it is really needed for proper operation of the Ford cooling system.
j peck

Wyandotte, MI

#68 Dec 6, 2009
i have a 2000 taurus it gives very little heat when standing idle and the engine at operating temp. but when im driving the heat comes out like it should. what gives? help!!
new owner of an old car
hey

Saint Louis, MO

#69 Nov 26, 2010
i need some help please 99 ford taurus
chevyboy

Aberdeen, SD

#70 Nov 26, 2010
im1believer wrote:
Before I pay the local Ford dealer a whopping $472.00 for labor only (parts extra) to replace the heater core, does anyone know whether a heat valve or other component could be causing the heat to cool down soon after fan is turned on? I can shut off the fan for 3-4 minutes and will have heat again for a minute once fan is turned back on. The radiator has been flushed twice because I kept getting rust in coolant reservoir within days of a fresh flush job. That leads me to think the heater core is nearly clogged, allowing very slow movement of hot coolant through the core and when fan blows across the coils it will quickly cool the core down until I cut switch off a few minutes. What have others experienced?
many thanks for any feedback!
I just got done fixing this problem apparently whoever designed the heating system was smoking something bad because there is no reason to put a bypass in between the heater hoses all i did was plug off the bypass hose to the heater core and everything works fine now
im1believer
I just got done fixing this problem apparently whoever designed the heating system was smoking something bad because there is no reason to put a bypass in between the heater hoses all i did was plug off the bypass hose to the heater core and everything works fine now
chevyboy

Aberdeen, SD

#71 Nov 26, 2010
I just got done fixing this problem apparently whoever designed the heating system was smoking something bad because there is no reason to put a bypass in between the heater hoses all i did was plug off the bypass hose to the heater core and everything works fine now. I noticed as soon as the heater core was getting a little dirty (from the messed up antifreeze Ford used in the factory) it goes through the bypass hose and not through the heater core..
w5kcm

North Richland Hills, TX

#72 Dec 30, 2010
My last post about this was March 2009. The heater is still working well after the Liquid Plummer flush of the heater core. I had also removed the bypass tube as chevyboy recommended. Also removed all the steel pipe and replaced with the regular heater hose. The steel pipe I believe is rusting inside and causing the heater core to plug up. VAMAN recommended the MotorCraft thermostat and this could be another good idea to try. SO far my 99 Taurus heater is still blowing flames.
ray

United States

#73 Mar 28, 2011
98 taurus-the only hoses i see are at the firewall each having a clamp. is this where the hoses get disconnected to flush heater core?
ray

United States

#74 Mar 28, 2011
have 98 taurus,same problem.the two hoses i see are at the firewall each having a clamp.is this where they get disconnected to flush heater core?
Charlie

Simpsonville, SC

#75 Mar 28, 2011
The Vulcan engine has an inherent problem of internal rust from the engine block getting into the heater core. The bypass hose at the heater core is to keep the coolant supply going to the engine in the likely event the heater core fails. Eliminate the bypass hose and you run a very great risk of your engine overheating to the point of ruin.

Ford does not use "messed up antifreeze. I am surprised (although I shouldn't be) at the amount of ignorance you sheep have about cars.
ajsky123

United States

#76 Nov 9, 2011
im1believer wrote:
Before I pay the local Ford dealer a whopping $472.00 for labor only (parts extra) to replace the heater core, does anyone know whether a heat valve or other component could be causing the heat to cool down soon after fan is turned on? I can shut off the fan for 3-4 minutes and will have heat again for a minute once fan is turned back on. The radiator has been flushed twice because I kept getting rust in coolant reservoir within days of a fresh flush job. That leads me to think the heater core is nearly clogged, allowing very slow movement of hot coolant through the core and when fan blows across the coils it will quickly cool the core down until I cut switch off a few minutes. What have others experienced?
many thanks for any feedback!
im1believer
I have very little knowledge of cars but can do some stuff. I couldn't see spending $800 to fix my 2001 Taurus with187000 miles. I bought the backflush kit 1st but still no heat. Then I went and figured out how to do the Draino trick. Holy CRAP! the thing blows hotter air that it ever did!
Thanks,
Ajsky123
Jeff

Germantown, OH

#77 Jan 7, 2012
rich wrote:
i cut the lines after the bypass, left the lower stub out hanging down and poured it in thru the top line via a funnel. then flushed it with a garden hose, after letting it sit in there for about 10 minutes. did this twice and works fine now
Rich, we have a 99 ford taurus. trying the liquid plumber for heater but also have no power steering even after we changed the power steering pump and it keeps overheating and I don't have any idea why. Do you have any suggestions? anything will help me. Don't have the money to purchase a new car right now and I have 3 kids to take back and forth to school and my wife and I HAVE to get back and forth to work. Looking forward to any help I am able to do to fix this.
ERi124

Cary, NC

#78 Jan 30, 2012
Having the same problem with my 99 ford Taurus. My mechanic has changed the thermostat on Saturday and I had a coolant flush today but still just warm heat. I need some heat in this car because I have small children. When I bought the car it had heat and the guy I brought it from said he just changed the heating core. So what else is their to do? I don't have a lot of money to spend on a lot of trial and errors so I want to know now what is the best way to handle this.. Any suggestions?
brian

Ghent, NY

#79 Nov 24, 2012
Peter wrote:
<quoted text>The problem you have is the water pump. Trust me i just went through the whole ideal. Sound not correct, but what is hapepening is the blades on the water pump are corroded and gone and the coolant is not circulating. You will ove me for this correct diagnosis.


try again 02 taraus all new water pump and timing still no dam heat
tried by pass shut off valve too
is it true these things need to be bled out? wtf
i want a sonata now
e mail [email protected]
dirtsportsman

Middletown, NY

#80 Aug 8, 2013
well we've changed the heater core still no heat, back flushed it alot of rust came out, changed the thermostat still no heat. ac works great. if i turn the fan on, it blows warm for a few minutes but cools very quickly, not enough to clear the windshield with an August rain storm! the car does not over heat! I've again flushed the entire system til clear, do I need to change the water pump without since the car does not overheat? help!

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