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1992 Buick Regal - Page 7 Questions & Answers
Hi my car won't go no faster than 25 mph on
you may have got bad fuel when you filled up at the gas station you will need to check the fuel in the tank (if you can ) to make sure that it is not contaminated, if it is you will have to drain the tank & clean it out as well as all the fuel lines & filters ( one hell of a job)......hope this helps......cheers.
Location of knock sensor and
Hi,
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Your knock sensor on your 3.8 litre engine is under the hood, passenger side, rear engine area, below exhaust manifold, mounted in engine block.
[I'm not alloted enough space to show you a picture of the knock sensor]
Your EGR valve is located under the hood, center, driver side, mounted on upper center driver side of engine
[I'm not alloted enough space to show you a picture of the GR valve]
All the best,
Ben
Where is the low ac
First
find the A/C compressor, it is attached directly to the engine and has a
pulley on it. When you turn on/off the A/C while the engine is running
you should be able to locate it by listening for it to engage.
When
you find it you need to trace the two metal pipes that come out of it.
One pipe is the high pressure side and one is the low. You will know
which one is the low side when you find the 'tee' with a plastic cap
(both high and low have one).
The fitting that comes with the
A/C recharge kit will only fit properly on the low pressure port.
Sometimes, but not always the low pressure port has a blue cap.
Air conditioner full of coolant but blowing warm
A few basic principles for air conditioner troubleshooting. For both central home air conditioner or window air conditioner,
the first thing to check is whether the unit is getting proper power.
If the unit uses 220 volt power be sure that the proper voltage is
getting to the unit. Same for 110 volt units. A voltage meter can be
used to assure that the voltage is correct.For window air conditioning units the voltage can also be checked before and after the thermostat.
If voltage is being supplied to the thermostat but not from it then the
thermostat probably needs replaced. This is a fairly common problem.
Another place to check is the fan motor voltage. The fan on window air conditioners runs both the indoor blower and the condenser fan. If that motor fails than the compressor
may run for a short time, but will overheat and shut off. Continued
operation like this will result in compressor failure. This motor can be
economically replaced for larger window air conditioners, but for
smaller ones the cost of replacement will be more than a new unit.Central air conditioners
for the home are more complex and there are more things that can go
wrong. As with the window air conditioner the thermostat can also be a
problem. The central air conditioner thermostat will only have 24 volts going to it. So don't look for high voltage there. Some units the voltage will be coming from the outdoor unit and others the voltage will be supplied by the indoor air handler or furnace. Most home central air conditioning will be supplied by the indoor air handler or the furnace. If the air conditioner is for cooling only the unit will usually have only two wires going to the condenser unit. Make sure that you have 24 volts across those wires.The
next thing to check will be the indoor blower. If your thermostat is
calling for cooling then the indoor blower should be running. If there
is no air moving across the indoor cooling coil then you will soon have a big block of ice formed on the coil.
This can happen for a few reasons. The indoor blower is not working,
the air flow is restricted and not allowing air to move across the coil.
A clogged air filter would also do this. Or the outdoor condenser unit has lost the charge of refrigerant.Finally and worst of all is when you have a complete compressor failure. Often when this happens the compressor will "lock up" or not be able to turn when power is supplied to it. Overheating or lack of lubrication are usually the main causes of compressor failure. Overheating can be caused by the outdoor coil around the compressor getting clogged with dirt, leaves, or grass. Loss of the refrigerant charge will also cause the compressor to overheat. It is the cool return gas coming back to the compressor that helps to keep it from overheating.As
you can see there are many things that can go wrong with an air
conditioner and I have not come close to exhausting the possibilities
here. I have just touched on the most common problems in a very basic
way.
There are some basic trouble shooting things that can be done very easily. Most
problems are above out of the range of comfort for many homeowners and
professional help should be consulted before any attempt is made at
repairs. Remember also, that the release of refrigerant gases into the atmosphere is a federal offense in the US. Proper care must always be taken to minimize the release of any gases. A license is also required to handle refrigerants. Make sure that the professional you call has the proper certifications to handle refrigerants properly.
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