Ford A/C :: Compressor Off And On Frequency
Jul 27, 2011
My 2001 Ford Ranger with the 3.0 has only 78K miles and the AC works very well as long as I don't drive on the highway! Once on the highway and I go about 50 to 60 miles an hour, the compressor kicks on and off about every 10 seconds or so, and the cooling definitely becomes less. Tonight I parked the truck in the driveway and let it idle and the AC worked fine --- I got it up to about 2500 RPM's and the AC once again went off and on rapidly. I just had the system checked once again this month at a different shop and they tell me I have no leaks and that it comes out cold and it must be because it has been so hot in St. Louis that it just can't handle it when I'm driving at higher speeds.
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Had a long trip with the X this week and noticed a weird vibration up at speed. Anything before 65 mph and the truck was smooth, higher than that a medium vibration developed. Its frequency increased with speed. Never got the truck over 70, but the vibration was there enough to rattle change in the cup holder and the rear view mirror. What it might be? I was thinking a hub bearing... 2000 Limited 4x4 PSD ....
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I have a relatively new to me Excursion. It seems to run well and shift well but recently I've become very aware of a strange hum, thrum, and vibration in the floor boards. The sound and vibration have a definite cadence/pulse.
Here is what I have observed trying to source the sound. Occurs around 2500 rpm and continues up to 4000 haven't really gone past 4k to know about after that.
Occurs in Park, neutral and drive and is more noticeable under load especially when towing. It is not really noticeable under my normal driving style it gets lost in the running gear until the X is at around 3600 RPM's which typically doesn't happen unless I'm pulling a long grade with a trailer. It was only after testing at a standstill in park and neutral that I realized it actually starts at approximately 2500.
Other than the vibration and low frequency hum starting at 2500 there are no real indicators of reduced performance or other problems but it's got me nervous.
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Just got my 2014 SCREW 6.5bed with eco boost. Truck has a high frequency vibration very noticeable at 45-55 MPH. So bad the rear view mirror is blurry. Took it to the dealer and they said the e-brake was dragging and fixed that and said the vibration was gone. Not gone. Did some searches and found a number people reporting vibration issues possibly related to drive shaft issues.
Took this video of the slip yoke at the T-case idling in first gear, sent it to the dealer and they said that's normal. I don't think that looks normal. Does that looks normal?
Slip Yoke at T-Case ...
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I have a 2007 Ford Fusion SE 2.3L 4 cylinder. It has approximately 94,000 miles on it. I purchased new Sumitomo tires with a 100,000 mile warranty in February of this year. They were balanced and aligned at the time of install. So far they have been very smooth and quiet with great grip. About 2 months ago I started hearing a noise that sounds like uneven tire wear, a sort of rhythmic rubbing or wobble sound that increases in frequency as the speed increases. It is most noticeable at speeds between 30 and 50mph. I rotate the tires every other other change (at least twice a year) and had the alignment done again in late October. I am hoping that there is nothing wrong with my virtually brand new tires. Is there anything else it could likely be?
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Anytime I run the RPM passed 2300-2500 I get this high frequency squeal. I don't seam to lose any performance, but very annoying. Is this the turbo having troubles. It's directly related to the RPM'S. Other that that, the truck runs great....
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00 F250 338k auto
No error codes or warning lights (Forscan verified)
No smoke out of the exhaust
No oil or coolant leaks
Have banging noise from the motor. When cold truck sounds normal, quiet. When it warms up, the banging becomes audible. You can hear it at idle. You can hear it under acceleration. Frequency increases with RPM
When at speed, and letting off the throttle, noise goes away.....comes back when back on the throttle. Any time during driving when I let off, engine quiets down to normal. To me it sounds like exhaust leak, bur not sure how to check for those?
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I have a 1996 Acura Integra with manual transmission. It has only 113K miles on it. I put on only 6K to 7.5K miles a year. I have owned the car since it was new & have always changed the oil & oil filter myself. Until about 3 years ago I changed the oil & filter 4 times a year--roughly about every 2K miles. Three years ago I reduced the number of oil changes to 3 times per year. Recently it was suggested to me that even that was too many and that I should change the oil & filter every 6 months. To be honest I am not comfortable with that but I also realize that my discomfort may simply come from habit. I have changed the oil & filter every 2K on every car that I have owned since I was a teenager. I should tell you that I am 80 years old and live on my savings & a pension. To replace this car would cost me between $25K to $30K so it is to my advantage to keep the car on the road for as long as I can. In short will I be doing any harm to the engine by changing the oil every 6 months?
A second question that I have about oil is that it is becoming increasingly more & more difficult to buy a high quality brand of conventional motor oil. When I shop I have been finding that the better engine oils, Castrol GTX, for example, do not offer much of a selection when it comes to conventional motor oil. In fact conventional motor oil is their cheapest oil. Most of the varieties of oil that they offer are blends of conventional motor oil & synthetic oil. I have heard conflicting statements about switching from conventional oil to synthetic oil. Some say it is dangerous to do and that it should not be done while others say that it does no harm. But what about switching to a blend of conventional oil & synthetic oil? Will that cause any damage to the engine?
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Have a 2008 with 23,000 miles on it. Recently, I noticed that there is a low-frequency noise (squeal?) that lasts for several seconds when turning the air conditioner on or off.
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I am looking at a 2006 toyota prius with 88,on it, and it looks like the transmission oil has not been changed on it yet. Recommendation is that transmission oil be changed every 60,000 miles. Would it be "safe" to buy this car considering everything else checks out with a local mechanic? The car is very very clean, almost new tires. Engine oil was changed regularly.
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I have a very long commute, 60 miles each way and 1 hour minimum. I installed a low end Cobra 40 channel CB radio to pass the time and to get traffic information. The antenna was purchased and trimmed to my car from a communication store which carries CB radios. My problem is, there is so much Radio Frequency noise generated when the Prius is put into drive (not even driven and without the gasoline motor starting) that it is picked up by the antenna and makes tons of static on the radio. The radio is virtually useless.
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My 2014 TDI SEL has just recently begun making a weird noise..
At around 48-60 MPH, a very low frequency hum begins and it persists until the car has slowed almost to a stop. It is not related to road speed or engine RPM.
It is getting louder and more noticeable every day. I took the car to the local dealer and they could not hear it. I'm wondering if it is an electronically controlled fan or pump or part of the stability or antilock systems.
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I have a 2002 Outback with 98000 miles. I am running conventional oil. How many miles between oil changes?
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My Prius v has 1300 miles. I didn't notice at first but now I notice a constant high frequency vibration in the car, especially at highway speeds. Took car to a tire shop and had tires dynamically balanced, same problem. I think it must be the toyo low profile tires or its in the drive train and just inherent to the hybrid system. Seems to be the same whether in eco mode or ev. Vibration is the same on smooth or rough roads. Dealer service manager says he is not aware of any problems. Suggests bring car in for a test drive and compare with another new one.
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I have an RX400h with about 100k miles.
The car's ML Stereo System recently started to go mad a bit: Let's say I am listening to an FM radio station on 103.3 frequency. From time to time I notice that sound quality goes bad and I can notice on radio screen that frequency changed from 103.3 to 103.25. After hitting memory button again 103.3 comes back, but after a while the problem appears once again.
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I need some speaker upgrade recommendations that'll fit into the door cards - specifically the subwoofers - I've replaced an OEM speaker in the driver side once already and it's doing the same thing as before it has a weird vibration/rattle noise with certain freqs. It may very well be the way it's sitting in there but I doubt it.
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I have a 2011 GTI with about 30k miles on it.... A couple thousand miles/couple months ago I hit a pothole on the highway.... it was a very sharp impact... the sidewall of the tire blistered and the rim was bent as well.... I got new tires and the rim fixed but it still feels like there is something wrong
During the 30k mile service at the dealer I brought it up and they balanced the wheels but didn't see anything wrong... I've had it balanced/aligned a few times since but it doesn't correct the issue... neither the tire shop nor the dealer was able to see anything blatantly wrong
It feels like something is "loose" and the car vibrates mildly at a high frequency... not just in the steering wheel... the vibration is mostly noticeably at higher speeds but the "looseness" can be felt at just about any speed...
At this point I've pretty much ruled out balance and alignment so what else could it be? Wheel bearing? Control arm bushing? Tie rod? Bent Axle? Steering collar?
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I am wondering if the frequency of the signal to change lanes can be increased from three (3) blips to four (4) or five (5) blips. Mine does only 3 and sometimes I do not find that sufficient - maybe I like to be extra cautious.
I have a Ross-Tech VAG-COM so looking for any way of changing it using that tool. I just do not feel very inclined to go around changing parameters without knowing what the outcome may be. I find the Ross-Tech manual to be rather cryptic.
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I have a 2015 RX350 with 25k. New tires, two road force balance by two different dealers and I'm still getting a high frequency vibration mostly in the seats above 60mph. Dealer cannot find any issues.
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I see it's been 7 months since my daughters last oil change, yet the car has just over 1000 miles since the last oil change. I'm wondering if I should change it for good measure or wait ( it's a 1999 chevy malibu)....
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Every so often, and only when turning left at a very slow speed, just for a spilt second there is a high frequency buzz that I can feel through the steering wheel. It makes no sense but I can only assume that it has something to do with the power steering. I have driven a lot of vehicles in my life and this is a new one for me.
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