I have a 1999 Buick Regal with a unusual heater fan problem.
The problem is the heater fan runs at high speed even thou the fan switch is in the off position and continues to run when the ignition key is off and pulled out.
The fan stops once I disconnect the battery and does not come back on after the batttery is connected again. The fan switch seems to function normally most of the time. The heater fan problem seems to come and go.
I removed the knob from the fan switch and the fan switch is in the off position but has not affect on stopping the fan once the problem shows up.
Thanks
How To Ac flushing
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Terryautos
Heater fan runs continuously- Solved
This is a common problem with a shorted out blower resistor.
It is located under the hood, on the topof the HVAC case. I believe i say a description of its locstion son this forum. Do a search for "Blower Resistor".
It is located under the hood, on the topof the HVAC case. I believe i say a description of its locstion son this forum. Do a search for "Blower Resistor".
Recharge Regal A/C compressor
When recharging a replacement ac compresser how many ounces of oil should be used and what kind to add with 134a freeon? 95 Buick regal custom 4 door sedan 3.8L
Re: Recharge ac compresser
the answer for that depends on the manufacturer of the compressor. Some compressors come with oil others come empty. The ones that come empty say to remove the oil drain plug and drain the original compressor. Add the same amount recovered from the old one into the new replacement. Compressors that come filled should be drained and then add the amount that came out of the old unit. Sometimes a new system, (new everything) may come preloaded with all the oil for the system in the system parts. The oil that the system needs will be spread all through the system. If less than one ounce is recovered from the old compressor, add two ounces to the compressor.
after installing the compressor into the system, rotate the compressor by hand around ten times to circulate the oil through the compressor. This will get the oil through the compressor instead of having the compressor start up with the engine spinning it and damage the compressor internally by trying to compress the oil in the cylinder.
the OE compressors were:
Harrison compressor: takes PAG 150 oil
Denso compressor: PAG 46 oil
Check for lables that should be in the hood area for AC fluids capacities
after installing the compressor into the system, rotate the compressor by hand around ten times to circulate the oil through the compressor. This will get the oil through the compressor instead of having the compressor start up with the engine spinning it and damage the compressor internally by trying to compress the oil in the cylinder.
the OE compressors were:
Harrison compressor: takes PAG 150 oil
Denso compressor: PAG 46 oil
Check for lables that should be in the hood area for AC fluids capacities
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Re: Recharge ac compresser
The compresser is completely dry of oil, can you fill it after you install it, and which portal do you use?
Re: Recharge ac compresser
you can put the oil in after the compressor is installed but it's better to do it before it's installed. It depends on how close the low side port is to the compressor. If the low side port is right next to the compressor, then when you add the oil it will be drawn into the compressor right away. If the port is a long way away from the compressor then the compressor will run dry for a while before the oil will get to it and there could be internal damage. The damage may not disable it but it it will shorten the life of the compressor.
If you add oil with a new compressor you would add it to the low side port. You have to evacuate the system of air then add the oil to the low side. Let the vacuum pull the oil in. Then you have to be vary careful because the oil will be sucked into the compressor and the oil can't compress. So you have to turn the compressor by hand until the oil circulates through the compressor. If you start the engine and turn on the compressor it will spin at what ever the engine rpm is and when the oil hits it it may stop the compressor. (or drag it way down)
If the compressor manifold is on the top and the compressor is accessible, remove the manifold and pour the oil into the compressor directly while turning it by hand. Use a small funnel will help. pour a little then turn it until it all gets run through. Then bolt the manifold back up and it should be okay. Then when you go to evacuate the system evacuate from the high side. Keep the low side gauge closed. This way you don't suck the oil out that you just added. Then when you charge it you go into the low side to push the oil through.
S
If you add oil with a new compressor you would add it to the low side port. You have to evacuate the system of air then add the oil to the low side. Let the vacuum pull the oil in. Then you have to be vary careful because the oil will be sucked into the compressor and the oil can't compress. So you have to turn the compressor by hand until the oil circulates through the compressor. If you start the engine and turn on the compressor it will spin at what ever the engine rpm is and when the oil hits it it may stop the compressor. (or drag it way down)
If the compressor manifold is on the top and the compressor is accessible, remove the manifold and pour the oil into the compressor directly while turning it by hand. Use a small funnel will help. pour a little then turn it until it all gets run through. Then bolt the manifold back up and it should be okay. Then when you go to evacuate the system evacuate from the high side. Keep the low side gauge closed. This way you don't suck the oil out that you just added. Then when you charge it you go into the low side to push the oil through.
S
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
How To Ac flushing
How to flush the ac system when installing a new compresser on a 95 Buick regal 3.8l?
Re: How To Ac flushing
Flushing the ac system will take special tools.
when replacing a compressor you will need to also replace the accumulator, oriface tube. When your compressor gets worn it starts sending pieces into the compressor stream. These tiny bits and pieces will travel into the condenser and then into the oriface tube. When you pull the oriface tube you should see how bad it gets clogged with debris. When you remove the compressor, the accumulator and the oriface tube, you use AC flushing fluid into the lines and push the fluid through the lines. (usually in the reverse direction) There are some tools that will pump the liquid through as a liquid and then captures the liquid and debris on the other end of the open system. Some tools use compressed air to push the fluid through and you need to cover the other end of the open system with a rag or something to capture the fluid and debris coming out the reverse end of the open system, You want to backflush the entire system while the compressor, oriface tube and accumulator are out of the system. When you decide that the system is cleaned of debris, use compressed aid to push all the flush fluid out and dry the system out.
when you go to install the compressor and other parts to will need to add oil to the accumulator, add some to the condenser and follow the directions for adding oil to the compressor. Some compressors come filled with oil others come empty. You will need to look at the instructions for your particular compressor. Regardless of your compressor instructions, you should always measure how much oil you can take out of the old compressor. It will be the best measurement of the oil that should be left in the new compressor. If the amount recovered is less than a certain amount, the instructions for the new compressor should tell you the minimum amount you should add to the new compressor.
when replacing a compressor you will need to also replace the accumulator, oriface tube. When your compressor gets worn it starts sending pieces into the compressor stream. These tiny bits and pieces will travel into the condenser and then into the oriface tube. When you pull the oriface tube you should see how bad it gets clogged with debris. When you remove the compressor, the accumulator and the oriface tube, you use AC flushing fluid into the lines and push the fluid through the lines. (usually in the reverse direction) There are some tools that will pump the liquid through as a liquid and then captures the liquid and debris on the other end of the open system. Some tools use compressed air to push the fluid through and you need to cover the other end of the open system with a rag or something to capture the fluid and debris coming out the reverse end of the open system, You want to backflush the entire system while the compressor, oriface tube and accumulator are out of the system. When you decide that the system is cleaned of debris, use compressed aid to push all the flush fluid out and dry the system out.
when you go to install the compressor and other parts to will need to add oil to the accumulator, add some to the condenser and follow the directions for adding oil to the compressor. Some compressors come filled with oil others come empty. You will need to look at the instructions for your particular compressor. Regardless of your compressor instructions, you should always measure how much oil you can take out of the old compressor. It will be the best measurement of the oil that should be left in the new compressor. If the amount recovered is less than a certain amount, the instructions for the new compressor should tell you the minimum amount you should add to the new compressor.
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
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Lagat
Re: How To Ac flushing
I found a straightforward procedure on how to perform AC flushing;
Step 1: Take it Apart
The first step is to effectively dismantle your air conditioner, giving you greater access to the vehicle’s inner workings and allowing you to flush out whatever dirt and debris have accumulated. Take out hoses, evaporators, condensers or any air conditioning parts you happen to spot.
Step 2: Flush it Out
Next, flush out debris by using an aerosol air conditioning flush. Flush out each individual piece of the system, allowing dirt and debris to come out one end, then wipe each of them down with a clean cloth.
Step 3: Search the Ducts
The next step is to investigate the ducts, which should look like large tubes that stem from the zig-zag tubes of your evaporator. What you’re looking for here are leaks. If you spot any holes, use duct tape to patch things up. You don’t want any air leaking out if you can help it.
Step 4: Remove the Accumulator
The accumulator will be shaped like a coffee can. Its role in the engine is to sift out debris and condensation from the air as it prepares to enter your vehicle. But this filtration system gets bogged down over time and is likely the cause of all the dust and debris build-up, so it will need to be replaced.
Step 5: Replace the Accumulator
Next, you’ll want to purchase a brand new, clean accumulator. You can find one at any auto parts store, but make sure you have the one that matches your vehicle make and model. Installation should be fairly easy: Bolt it just like the old one was bolted, and then re-attach all the hoses and other connecting parts.
Thanks
_________________________
https://belairtowtruck.com/
Step 1: Take it Apart
The first step is to effectively dismantle your air conditioner, giving you greater access to the vehicle’s inner workings and allowing you to flush out whatever dirt and debris have accumulated. Take out hoses, evaporators, condensers or any air conditioning parts you happen to spot.
Step 2: Flush it Out
Next, flush out debris by using an aerosol air conditioning flush. Flush out each individual piece of the system, allowing dirt and debris to come out one end, then wipe each of them down with a clean cloth.
Step 3: Search the Ducts
The next step is to investigate the ducts, which should look like large tubes that stem from the zig-zag tubes of your evaporator. What you’re looking for here are leaks. If you spot any holes, use duct tape to patch things up. You don’t want any air leaking out if you can help it.
Step 4: Remove the Accumulator
The accumulator will be shaped like a coffee can. Its role in the engine is to sift out debris and condensation from the air as it prepares to enter your vehicle. But this filtration system gets bogged down over time and is likely the cause of all the dust and debris build-up, so it will need to be replaced.
Step 5: Replace the Accumulator
Next, you’ll want to purchase a brand new, clean accumulator. You can find one at any auto parts store, but make sure you have the one that matches your vehicle make and model. Installation should be fairly easy: Bolt it just like the old one was bolted, and then re-attach all the hoses and other connecting parts.
Thanks
_________________________
https://belairtowtruck.com/