Honda civic 2002 makes a lowd knocking noise when the compressor is activated. I replaced the compressor, added oil, vacuum tested
Old compressor was leaking and was making a knocking noise. I replaced the compressor and dryer. I added oil (5 oz) into compressor before installing it. Vacuum indicated no leaks. Then recharged with R134 (about 20 Oz) . Knocking noise is still present, unbearable. Air is cold. belt was tightened. What would cause a load knocking noise whenever the compressor kicks in?
How much would it cost to fix the problem. Replaced parts were brand new.
My car has 150000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there. Since you just replaced the compressor, it may be that the AC system is overcharged making the compressor hard to turn. It is also possible the new compressor itself is defective.The best advice we can offer here is to have one of our professional mobile mechanics come to your location and complete an AC is not working inspection. This will allow them to inspect your vehicle and determine what exactly is causing this noise and then recommend a repair that should resolve the issue. Since there are multiple possible sources, providing you a good estimate for repairing this issue would be very difficult.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The Compressor Fan Is Loose
If the knocking noise is coming from your AC compressor (the outdoor unit), the fan or one of its blades might be loose. This can cause the fan`s blades to bang into other parts of the compressor, creating a loud knocking noise.
Damaged CV joint: The most common cause of a clicking or popping sound from the wheels is a broken CV joint. The CV joints, which stand for Constant Velocity, are essentially the wrists of your vehicle`s steering system.
If your vehicle won`t start but you hear a rapid clicking sound when you turn the key then you may have a problem with your battery or alternator.
It`s not uncommon for a Civic to last upward of 20 years, and you can tack on the miles during that expanse of time. You could get from 200,000 to 300,000 miles with a Honda Civic before it completely breaks down or requires extensive repairs.
Loud clanking or banging can also indicate that your compressor needs replacement. Rattling, ticking, rumbling: these kinds of sounds often point to a loosening piece of hardware or leaves clogged in your outdoor unit.
Bad spark plugs are the most common cause of engine knocking. However, using the wrong plugs could also be a problem. Using the Wrong Fuel — Most engines are designed to run on regular octane gasoline. However, if your vehicle is designed to make a lot of power you might need to use high-octane gasoline.
It might be a battery or alternator problem.
A rapid clicking noise when trying to start your car could mean there`s something wrong within the electrical system. Perhaps your battery`s dead, or your alternator, which charges the battery, isn`t working correctly.
What are the symptoms related to a bad starter? Starter motor failure produces one common symptom across all makes and models: When you turn the key, the starter solenoid will click, but the engine will not rotate. You also might hear a whirring, or fast spinning noise when the key is turned.
If your tires are worn down, you`ll hear a clicking noise every time you turn. You can usually tell if your tires are worn down by checking the tread depth. If the tread depth is less than 2/32 inch, then the tires need to be replaced.
Most Hondas will give out somewhere between 200k-300k miles, but a few well-maintained vehicles have made it even longer than that. It`s not unheard of for a Honda to hit 25 or even 30 years old with the right owner.
Owner`s Rave Most Honda Civics will Reach 100,000 Miles with Good Care, Some have Documented Road to 500,000 Miles. Consensus about Honda Civic reliability among owners is that the Civic will go for as long as you`re willing to take great care of it.
According to vehiclehistory.com, here are the most reliable years for the Honda Civic: 2012 Honda Civic. 2013 Honda Civic. 2014 Honda Civic.
Engine knocking often occurs when the air-fuel mixture is incorrect. To counter this, you can add an octane booster in the mix. This can help ensure proper octane rating, which can then stop the knocking. The recommended minimum octane level in the US is 87.
Turn your fridge off and let it defrost. Once defrosted, plug it back in, and see if the problem has been solved. If the noise is still happening, locate the evaporator fan and remove the cover from it. Inspect the fan to see if it is dirty, and if so, give it a good clean.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Honda civic 2002 makes a lowd knocking noise when the compressor is activated. I replaced the compressor, added oil, vacuum tested
ANSWER : Hi there. Since you just replaced the compressor, it may be that the AC system is overcharged making the compressor hard to turn. It is also possible the new compressor itself is defective.The best advice we can offer here is to have one of our professional mobile mechanics come to your location and complete an AC is not working inspection. This will allow them to inspect your vehicle and determine what exactly is causing this noise and then recommend a repair that should resolve the issue. Since there are multiple possible sources, providing you a good estimate for repairing this issue would be very difficult.
Are thse current and relevant prices for this service, and how long does it take? REPLACE AUX VACUUM PUMP (OIL LEAKING FROM A
ANSWER : Hi there. It really depends on who provided you with this diagnosis as to how long the repairs would take to complete. In regards to not including the seals listed at the bottom, this is not advised. The seals protect the components from leaking and will also reduce the potential of overheating on your vehicle.
lost all oil pressure, replaced the oil pump, low oil sensor, oil pressure sensor, oil pan gasket,
ANSWER : The fuel pump will not stay on if you loose oil pressure. This is why it is shutting off. The loss of oil pressure may be from bad crankshaft bearings or camshaft bearings. The engine oil pan should be removed and the oil pump needs to be checked to ensure that you put in the pick up tube seal to the pump and connected the pump to the block. Then remove at least one main bearing cap and inspect the bearings for excessive wear and crankshaft damage. If you need some help with this, consider YourMechanic, as a certified technician can help diagnose the issue with your oil pressure firsthand and help you fix it accordingly.
Check engine on knocking engine milky cap but not in oil change loud knocking noise while driving and cold start up
ANSWER : Coolant leaks can be external or internal. If the coolant is leaking internally into the cylinders or crankcase, that will require a fairly significant repair. If the coolant is leaking externally, unless the leak is at the head gasket or the lower intake manifold, external leaks can be repaired readily. On the engine you have it was really common to have coolant leaks at the lower intake manifold, so common that the gasket there was completely designed and a different repair procedure was specified (higher torque on the manifold studs). To get the coolant leak diagnosed, please use YourMechanic’s coolant leak diagnostic service link. The knocking noise is obviously of concern. Unfortunately, typically, such noise is from worn bearings, connecting rods, and other major components. The noise might be accompanied by low oil pressure. My best advice is have the cooling leak diagnosed in case that is readily resolvable. The mechanic can evaluate the noise and if it is internal the engine will eventually have to be disassembled and rebuilt. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
My car leaked all of the oil from the oil filter and now it’s making a loud thumping noise – did the engine pop ?
ANSWER : Hi there:
It’s really difficult to tell you for certain what’s wrong with your Saturn without completing a visual inspection. However, if you had to add half of a gallon of oil, that’s not a good indication that internal components were not unharmed. I’d recommend that you contact a local professional mechanic as soon as possible to complete an engine inspection to determine of damage that has been sustained.
air conditioner works on 2002 honda odyssey however makes an extremely loud noise local mechanic took out a fuse the noise stopped
ANSWER : Hi there. Thanks for writing into YourMechanic.com. It is quite possible that the AC compressor is the source of the loud noise you are hearing with your Honda Odyssey. Typically when the compressor begins to fail, it’s an inner bearing that is essentially grinding that causes the noise. If you would like to receive a price estimate to have one of our mobile mechanics come to your location and complete the AC compressor replacement, please click this link, then click the Get a Quote blue button. Once we receive your information, we’ll send you a quote. Thanks!
New A/C components with a mixture of oil added.
ANSWER : Your compressor, when replaced, should of called for a specific type of oil and amount to be used. Since you have put in PAG 46 and 100, it may have too much and incorrect oil in the system. You also stated you overcharged the system. This may have damaged the A/C compressor. I would have a certified mechanic closely inspect your entire A/C system so that any adjustments or repairs that are needed can be made.
Hello Ben, my oil pressure is came on. Slight oil drip. Mechanic changed oil, replaced sending unit. Light came on after a day.
ANSWER : You need to have the oil pressure checked to see if the oil pressure is within specifications before you condemn the engine internal problem with oil pump or crankshaft and bearings. You may want to get the dealer involved now and let them take care of getting the light diagnosed.
