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Buick Roadmaster
This category covers questions about the Buick Roadmaster, an automobile manufactured by General Motors and sold through its Buick division. The Roadmaster was available as a sedan, convertible, and a station wagon. The first Roadmaster was in production from 1936-1958, while the more recent Roadmaster began production in 1991 and ended in 1996.
539 Questions
First of all if the engine starts and does get warmed up check to see that the upper hose is nice and hot. If NOT then check your thermostat as it may be open. If the engine is hot then check the two heater hoses that go to the firewall. They should be hot also. That is BOTH should be hot unless it uses a valve to close one hose. If it does you will note that. If both hoses are HOT then you KNOW you have hot coolant traveling through the heater core. Now also remember that you do this check in about 5 minutes after the engine has fully warmed up. I say this as if you wait too long..its entirely possible that your heater core is plugged up and it is merely trasfering heat through the core structure. IF both hoses are HOT your issue is with the blend door and how its controlled. If its climate controlled then the door is probably controlled by a motor or vacuum motor. You would have to check the schematic to see exactly HOW its done. As I said..if the core is flowing hot coolant then your only issue is controlling the temp. Also I might add that make sure your AC compressor is NOT working when the controller is on the heat mode. If it is its possible your AC is cooling the heat...that you want!
1994 Buick Roadmaster heater core replacement?
# Drain anti_freeze low pressure air through the heater core will help empty it)
# Disconnect Heater core hoses on the engine compartment side of the firewall. # Remove cover panel under dash. # Remove dash board brace (small support brace that runs from firewall to glove box shroud surround.) # Remove lower air box section. ( Many small screws so be sure you get them all) # Remove air conditioning evaporator (Some times this requires the disconnection of hoses in the engine compartment, But try to work around that first to avoid having to recharge your air conditioner.) # Remove the heater core mounting straps and screws. # Wiggle the heater core towards the glove box to extract the steel hoses from the firewall bushings/seals. # Be careful not to spill any remaining anti-freeze on the carpet. # If you had a leaky heater core be sure to clean the air box the best you can to keep the anti-freeze smell out of the car.
# Reverse this procedure to install the new heater core.I hope that helps someone in some way. It's not complicated but it is a pain in the rump to be upside down for that long. You may need to take several breaks during this process to give your neck and back a break as well as your knuckles... It's not an easy repair but it is pretty straight forward.
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.
~FN~
How can you fix the turn signal on a 1990 Buick Park Avenue?
You did not mention if it is a bulb problem or it will not flash. If it blinks faster on one side than the other, then you have a bad bulb. Check them and determine which is not working and replace it. If the indicator stays on steady, then you have a flasher problem. it will not flash
How do I remove locking wheel hubs from 1992 Buick Roadmaster?
I would like to know how you put four wheel drive into a luxury car........
Where is oil pressure switch located 1995 Buick road master 5.7 motor?
Behind the intake manifold on the drivers side
How do you chane the fuel filter n a 95 Buick Roadmaster?
squeeze the white tabs on the filter and gently pull them away from the black fuel line. suggest having a rag handy as a pressurized fuel line WILL SPRAY FUEL. do the same for the other side of the filter. be certain to replace the filter facing the proper direction or your filter may not work the white tabs should remain on the filter and new filter will have white tabs on it already. to install: face filter in proper direction insert end into appropriate fuel line end until it clicks repeat for opposite side of filter. filter can be found on driver side under the car towards the rear door
How do you reset anti theft system on 1995 Buick Roadmaster?
On my 96 wagon , I have to disconnect the battery for about ten minutes to reset the system
Can you hear fuel pump after the car quits by turning the key on and off ? If you can't it's the fuel pump relay or pump. Does it only happen after the car has warmed right up ? If that's the case check how much exhaust is coming out of the tail pipe after it's warmed up! If there isn't much coming out your catyltic converter is pluged and needs to be replaced. This happened to me. Car would run fine until it warmed right up then stuff in converter would expand and choke exhaust off and car would die. After it cooled off stuff would contract and car would run fine again. Good luck...Rick D
This happen to me. the problem was the Fuel tank sending unit.
It could also be the fuel pump strainer. When it is clogged it collapses and cuts off fuel to the engine. You have to wait a while before it will start back up.
How do you take lines off fuel pump in 96 Buick Roadmaster?
If the '96 is the same as my '95- then you simply have to have a GM-style fuel-line quick disconnect tool. There is one size for the outlet line from the fuel pump, and another for the return line. Be careful and get the right tool! Some stores sell a "combination" that contains both sizes on a single tool. These will not work- they fit the trucks, but will not fit the cars. Know from experience. The tool simpply slips under the locking ring, releases the spring pressure, and the line slips off. The lines can only be accessed after you drop the tank a few inches from its perch, though.
Why does the emi fuse blow in a 94 Buick roadmaster?
The EMI fuse in a 1994 Buick Roadmaster may blow due to several reasons, including a short circuit in the electrical system, a malfunctioning component drawing excessive current, or corrosion in the wiring or connectors. It can also be triggered by a faulty accessory or device connected to the circuit. Regular maintenance and inspection of the electrical system can help prevent these issues. If the fuse blows repeatedly, it's advisable to have a professional diagnose the underlying problem.
Where is the rollover switch in 1996 Buick Roadmaster?
In a 1996 Buick Roadmaster, the rollover switch, also known as the fuel pump shutoff switch, is typically located in the trunk area behind the left side trim panel. To access it, you may need to remove some interior panels or carpeting. This switch is designed to cut off the fuel supply in the event of a rollover accident for safety reasons. Always refer to the vehicle’s service manual for specific instructions and locations.
How do you remove the computer on 92 Buick road master?
To remove the computer on a 1992 Buick Roadmaster, first disconnect the negative battery cable to prevent electrical shorts. Then, locate the engine control module (ECM), which is typically found behind the passenger side kick panel. Remove any screws or bolts securing the ECM, disconnect the wiring harness, and carefully pull the unit out. Be sure to handle it gently to avoid damaging any connectors.
Is there a fuse box under the hood of a 93 Buick Roadmaster?
Yes, the 1993 Buick Roadmaster has a fuse box located under the hood. This fuse box contains fuses for various electrical components and systems in the vehicle. Additionally, there is another fuse box located inside the cabin, usually near the driver's side. Always consult the owner's manual for specific fuse locations and functions.
How do you change oil sending unit on 92 Buick Roadmaster?
To change the oil sending unit on a 1992 Buick Roadmaster, start by locating the unit, which is typically situated near the oil filter on the engine block. Disconnect the negative battery cable and drain the engine oil if necessary. Use a socket wrench to carefully remove the old sending unit, then install the new one, making sure to tighten it securely but not overtighten. Finally, reconnect the battery cable, refill the oil if drained, and check for leaks.
Where is the cranksensor located on a Buick roadmaster?
The crankshaft position sensor on a Buick Roadmaster is typically located near the bottom of the engine, often near the crankshaft pulley. It is usually mounted on the engine block and can be accessed from underneath the vehicle. For precise location, it's best to refer to the service manual specific to the model year, as placement may vary slightly.
How do you replace side limited light in 1996 Roadmaster?
To replace the side limited light in a 1996 Roadmaster, first, ensure the vehicle is turned off and the keys are removed. Carefully remove the lens cover by unscrewing any screws or using a flathead screwdriver to pry it off gently. Replace the old bulb with a new one, ensuring it's securely in place, then reattach the lens cover and test the light to ensure it functions properly.
How do you reset the climate control on a 1991 Buick Roadmaster?
To reset the climate control on a 1991 Buick Roadmaster, start by turning off the ignition and disconnecting the vehicle's battery for a few minutes. Reconnect the battery, then turn the ignition to the "On" position without starting the engine. This process can help reset the climate control system. If issues persist, it may be necessary to check for faulty components or consult a professional mechanic.
Where is the control module relay located on a 1993 Buick Roadmaster?
The control module relay on a 1993 Buick Roadmaster is typically located in the engine compartment fuse box. It can also be found near the battery or along the firewall. For precise location, it's best to consult the vehicle's service manual, as the layout can vary slightly depending on the specific model and options.
Where is the low service port on your 1992 Buick Roadmaster?
The low service port on a 1992 Buick Roadmaster is located on the air conditioning system's accumulator, which is found near the firewall on the passenger side of the engine compartment. It's typically a smaller port compared to the high service port and is used for recharging the AC system. Make sure to identify it correctly to avoid any issues while servicing the AC. Always consult your vehicle's manual for specific details and safety precautions.
Where is the horn relay on a 94 Buick roadmaster?
The horn relay on a 1994 Buick Roadmaster is typically located in the under-hood fuse and relay center. This center is situated near the battery, on the driver's side of the engine compartment. You can identify the horn relay by referring to the diagram on the cover of the relay center, which will indicate the specific location and function of each relay.
Where is the PCV valve on a 96 Buick Roadmaster?
On a 1996 Buick Roadmaster, the PCV (Positive Crankcase Ventilation) valve is located on the driver's side valve cover. It is typically inserted into a grommet on the valve cover and connected to a hose that leads to the intake manifold. To access it, you may need to remove any engine covers or components that obstruct your view.
