Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the car.
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Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the car.
2004 V70 2.4 non-turbo, 65K miles. Recently the "Check Engine" light came on then off and then on, etc. I checked the codes and it was "Fuel Rail Pressure Sensor - Low voltage". Called my local dealer as Recall 181 covers this. They replaced the part in about 20 minutes or so.
As I started the car, right away I noticed the fuel pump buzzing, loudly. I told the service advisor but his response was he doesn't hear anything. I walked him to the back of the car, and then he admitted to hearing it. They pulled it back in and said it was the fuel pump and that it was making that noise when I brought it in. Clearly, it wasn't. I shook my head and walked away as it was obvious they were not willing to do anything about it.
The noise is a loud buzzing noise coming from the back of the car. It is very audible when the car is just ideling. Also when I put the key into position II, which inturn primes the fuel pump, it sounds like a grinding noise. It does it every time and the noise is exactly the same (with a full tank of gas)
My question are:
1. What exactly could have happened as a result of them replacing the Fuel Rail Pressure Sensor?
2. Is this part the same thing as a fuel pressure regulator? If not, what exactly does it do?
3. What can I check to make sure the fuel system is working properly?
Thank you,
-Adrian
As I started the car, right away I noticed the fuel pump buzzing, loudly. I told the service advisor but his response was he doesn't hear anything. I walked him to the back of the car, and then he admitted to hearing it. They pulled it back in and said it was the fuel pump and that it was making that noise when I brought it in. Clearly, it wasn't. I shook my head and walked away as it was obvious they were not willing to do anything about it.
The noise is a loud buzzing noise coming from the back of the car. It is very audible when the car is just ideling. Also when I put the key into position II, which inturn primes the fuel pump, it sounds like a grinding noise. It does it every time and the noise is exactly the same (with a full tank of gas)
My question are:
1. What exactly could have happened as a result of them replacing the Fuel Rail Pressure Sensor?
2. Is this part the same thing as a fuel pressure regulator? If not, what exactly does it do?
3. What can I check to make sure the fuel system is working properly?
Thank you,
-Adrian
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#3
RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
ORIGINAL: tech
I have never seen this before. As far as I know the sensor they replaced is on the end of the fuel rail.
I would take it back again and talk to the Service Manager.
I have never seen this before. As far as I know the sensor they replaced is on the end of the fuel rail.
I would take it back again and talk to the Service Manager.
The dealer, as do I, suspect the noise is coming from the in-tank fuel pump. On that note, what is the most common reason fuel pumps get noisy or go bad?
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RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
ORIGINAL: TIPSP
Just because a fuel pump is noise dosen't mean it is bad or going bad...well...on my 745t, they are both, the intake and main fuel pumps, really loud all the time.
Just because a fuel pump is noise dosen't mean it is bad or going bad...well...on my 745t, they are both, the intake and main fuel pumps, really loud all the time.
ORIGINAL: tech
It usually gets louder with age. If it were me I would run it till it died then replace it.
It usually gets louder with age. If it were me I would run it till it died then replace it.
#7
RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
I know what you mean wagons are always the worse as far as noise from the pumps.
Not sure how much the sensor messes with fuel pressure.
I would think the only fix would be a new pump. Not sure of the 2004 is under the extended warranty for the nipples but if it was and the nipple cracked that would be one way to get it free.
Not sure how much the sensor messes with fuel pressure.
I would think the only fix would be a new pump. Not sure of the 2004 is under the extended warranty for the nipples but if it was and the nipple cracked that would be one way to get it free.
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RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
ORIGINAL: tech
Not right off hand let me dig and see what I can find.
Not right off hand let me dig and see what I can find.
Since this code really doesn't give any specific information and the car has 64K miles I decided to replace the spark plugs today. I picked up some new ones from the dealer and installed them and reset the code.
The old ones actually looked really worn out at 64K, the tips were just barely sticking out. Otherwise they looked OK. We'll see how soon the code comes back.
#11
RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
ORIGINAL: submit
Since this code really doesn't give any specific information and the car has 64K miles I decided to replace the spark plugs today. I picked up some new ones from the dealer and installed them and reset the code.
The old ones actually looked really worn out at 64K, the tips were just barely sticking out. Otherwise they looked OK. We'll see how soon the code comes back.
ORIGINAL: tech
Not right off hand let me dig and see what I can find.
Not right off hand let me dig and see what I can find.
Since this code really doesn't give any specific information and the car has 64K miles I decided to replace the spark plugs today. I picked up some new ones from the dealer and installed them and reset the code.
The old ones actually looked really worn out at 64K, the tips were just barely sticking out. Otherwise they looked OK. We'll see how soon the code comes back.
Same code P0172 came back the same day after about 12 or so miles.
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RE: Dealer replaced the Fuel Pressure Sensor and now there is a loud buzzing from the back of the ca
Can you recommend software or a scanner device which can read Volvo codes (if it can do BMW as well, even better). I have a generic one but it's not giving any details other then the car is running rich. P0172. Thanks.
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