Question about Buick Roadmaster
It appears I was incorrect about removing the dash assembly, here are the instructions from a Buick owners club.
Under the passenger dash is an access panel that will allow you to remove the heater core, it really isn't that hard, there are lots of little dash screws and panel screws to remove before you get where you need to be but at least it is roomy. The AC evaporator is located by the heater core. I will give you a tip. I changed mine last year and the heater core that I ordered for my 92 Roadmaster was not correct, when I took my old one out and matched it in a book at the local part store, the heater core for my vehicle was listed as a 96 Caprice???? The car has been in my family since it was purchased new and the heater core had never been changed!!!! Explain that one!Oh yeah, one more tip, if your heater core is leaking, this access panel lowers towards you, if there is nasty sweet smelling water in there it will pour all over you, be careful! Caprice parts are the same as a Roadmaster,so if you ever need anything just look up caprices
Posted on Dec 16, 2008
1992 buick lasabre heater core went out need help step bye step would be nice or picture how to take it off thank you
Posted on Aug 03, 2009
If I left any thing out please feel free to add comments to these instructions. Generally these instructions should cover most years of Buick Roadmasters.
Just an additional note:
If you have to disconnect your air you may have to upgrade your entire system to the new R34 system instead of R12 because of the new environmental laws in some areas. Try to avoid this as best you can because R34 is not as effective in an older systems as it is in newer systems simply because the evaporator and condenser are smaller and they need to be large to transfer the heat in the R34. It's not nearly as effective at the transfer of heat as the environmentally unfriendly R12 was.
Posted on Nov 07, 2009
A shotgun approach to repairs can really rack up the bills.
If your symptoms are loss of water and you have replaced the thermostat, you more than likely have an issue with steam. And that steam more than often comes from a bad head gasket. Most head gasket gasket failures seem to be confined to the water side initially, but let it go on bigger damage will occur.
You can buy a litmus test strip to dunk in the coolant. It will indicate if there are exhaust residuals in the water and thus a gasket failure.
However it may just be something simple, given that you have just about replaced everything:
have you given the radiator a good hosing inside and out?
is the radiator fan running when it should be?
Posted on Sep 07, 2008
SOURCE: heater core replacement
OK, Ifound the problem with mine. Dont unplug your air dryer. I checked the 2 hoses coming out from the heater core and still one was hot and the other not hot. The top one comes from the radiator fill tank and the bottom one comes out of the core and goes around to the front and into the water pump. I disconnected both close to the core and could runwater through both directions so upon further examination, I disconnected the hose at the water pump and no water flow. The hose was plugged up with something. Once I cleared it with a hanger and reconnected it I had water flowing through the core and great heat. Hope this is your problem too as it is aneasy fix
Posted on Oct 23, 2008
SOURCE: where is the heater motor
The blower motor is responsible for driving the fan that blows air across the heater core. Advice: If the blower motor is not working, first you must determine if the blower motor is at fault or if the problem lies in the speed control circuit and/or wiring. One of the quickest ways (depending on accessibility) to test a blower motor, is to hot wire it. If you disconnect the wiring harness and apply battery voltage to the blower motor terminals and it does not spin, then you know that the motor is bad. If it spins, you know the problem is somewhere else in the system. Most blower motors will have two wires or terminals, a positive and a ground. Check the repair guide's wiring diagrams to determine which is which. If you do get it backwards, don't worry. Reverse polarity will only cause the motor to run backwards. For testing purposes, if the motor spins in either direction, the problem lies elsewhere. The one wire design gets it's ground through the blower motor mounting, so the single wire or terminal is your positive connection.
Posted on Jun 11, 2011
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Posted on Jan 02, 2017
Tips for a great answer:
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For heater core replacing procedure. I suggest you to go through
this related help links.Its all complete step by step procedure: ----How to replace heater core for All car models?
Click the link below: ---
How to Flush Heater Core?
How to Remove Heater Core ?
Heater Core Replacement?
To replace heater core?http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on.html------
How to replace heater core?http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on_10.html
How to replace heater core on Buick Regal?
----------This will help.Thanks.
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