Heater core seems to need repairing on a95 Mercury Grand Marquis
A factory installed heater core repair was done two years ago but only 1,000 miles ago ! I have the receipt. My father in law's car was recently given to me since he can no longer drive. Now I am looking at over $600 repair on a car that may be worth not more than that ! No shade tree mechanic friend will touch it. I don't trust the dealers. I am all thumbs and no mechanic by any means. Is it true that the entire dash and possibly the steering wheel has to be taken out ( and replaced too) to fix the heater core ?Would this model have a ''quick'' access panel somewhere ? I have found where the anti-freeze is leaking inside the car floor- board on the passenger side. I need the heater since winter is coming of course but I don't have the money due to these tough economic times at work and the nation !! Selling the car is out for sure since buying something smaller and gas efficient requires payments which is not possible either. Please help as cheaply as possible as soon as possible. What can you suggest I do to fix the problem. I read one guys advise was to read the repair manual then buy a six-pack of beer !!
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Re: Repair Heater core
If the heater has failed again then the heater was either defective to start with, or the technician damaged it when it was installed, this is the most likely cause fo your problem, when the heater core tubes are stabbed through the firewall it is really easy to bend them and crack the solder joints. I worked in a Ford dealer for 20 years and never saw any problem with either the Grand Marquis or the Crown Victoria. The entire dash dash must be removed and then the steering column dropped down, but it does not have to be taken out, this is a very difficult job for a trained factory tech, it is not for the do it yourself mechanic in most cases, the job will take at least 15 hours for the amateur.
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If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired. Heater Housing
The heater housing is usually under the dash and must be removed to gain access to the heater core.
Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
The heater housing is disassembled to get to the heater core.
Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
Remove the heater coolant hoses.
Remove the cable and/or vacuum control lines (if equipped).
Remove the heater core securing brackets and/or clamps.
Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.
The heater core on this vehicle calls for roughly 5 hours of labor time and involves splitting the evaporator case assembly, if this is your first one I would definitely think about investing in a haynes repair manual for yourself, any questions please get back to me, I'M HERE TO HELP!!!
This can be a very difficult and time consuming repair. Basically you just have to remove enough of the dash to allow access to the heater core. Go slow and do not break any parts. Take digital photos so you will be able to reassemble everything. Once you get to it, you simply disconnect the hoses under the hood and remove and replace the core, and reconnect the hoses. You then start the engine and add the necessary coolant and bleed all air from the system with the heater set to hot. This is not an easy repair and requires knowledge of how the dash comes apart. If you are not comfortable trying this then you may want to seek out a professional who has done this before on an older Mercury.
in these tough times there is no time for joke especially when it is not me who is going to pay for it.
now it is true tht the whole dash board has to be pulled down in order to acess the heater core housing in the process the steering column will have to be dropped also it is aprox a job for about 6 hours but it will take a good mechanic around 8 hrs to do it if you want to avoid the anti freeze leaking inside the car the best thing you can d temporarly is to by pass the heater control valve but thee will be absolutely NO HEAT in the car i mean NO HEAT, but you will stop the antifreeze leaking inside the vehicle and of course you can drive it if you can get a small heater fan at auto zone and plug it into the cig lighter of your car!!!!!!!!!.