P0171 + P0174 + whining noise... fuel pump?
#1
Instructor
Thread Starter
P0171 + P0174 + whining noise... fuel pump?
I picked up the car from my buddy as a little better of an auto x toy. The car has a few little things to take care of, there is an exhaust leak, needs the ECBM sent off, and the vacuum leak codes.
I know these codes, from what I've read and searched, are typically vacuum leak codes. I cannot find anything wrong with any of the vacuum stuff, however, my buddy was the second or third owner, and all of the mods the car has were not done by him. I was looking and it appears also the PCV valve might have been re routed. I included a picture below to show what I'm talking about. He has checked the hoses, and sprayed ether around to see if it changes and it did not. In just visually inspecting the hoses, not only do I not find any leaks, but I cannot find any hoses that are even remotely not brand new looking.
I took my wife for a little ride when I got home, and I was noticing a whining noise coming from the cabin that I hadn't noticed on the drive home. I'm wondering if that's the fuel pump going bad (over a half tank of fuel), and coupled with the codes if that's the problem, and the car literally is running lean. I included a link to a youtube video I uploaded. Please note, in the video, on my phone, the noise is WAY louder than it seems inside the car. Playing it through my speakers on the computer now, it's not quite as loud. YMMV. Does it whether the AC is on or not.
Thanks in advance everyone! Can't wait to sort this thing out and get it racing.
I know these codes, from what I've read and searched, are typically vacuum leak codes. I cannot find anything wrong with any of the vacuum stuff, however, my buddy was the second or third owner, and all of the mods the car has were not done by him. I was looking and it appears also the PCV valve might have been re routed. I included a picture below to show what I'm talking about. He has checked the hoses, and sprayed ether around to see if it changes and it did not. In just visually inspecting the hoses, not only do I not find any leaks, but I cannot find any hoses that are even remotely not brand new looking.
I took my wife for a little ride when I got home, and I was noticing a whining noise coming from the cabin that I hadn't noticed on the drive home. I'm wondering if that's the fuel pump going bad (over a half tank of fuel), and coupled with the codes if that's the problem, and the car literally is running lean. I included a link to a youtube video I uploaded. Please note, in the video, on my phone, the noise is WAY louder than it seems inside the car. Playing it through my speakers on the computer now, it's not quite as loud. YMMV. Does it whether the AC is on or not.
Thanks in advance everyone! Can't wait to sort this thing out and get it racing.
Last edited by carlspeed; 06-13-2016 at 11:26 PM.
#2
I picked up the car from my buddy as a little better of an auto x toy. The car has a few little things to take care of, there is an exhaust leak, needs the ECBM sent off, and the vacuum leak codes.
I know these codes, from what I've read and searched, are typically vacuum leak codes. I cannot find anything wrong with any of the vacuum stuff, however, my buddy was the second or third owner, and all of the mods the car has were not done by him. I was looking and it appears also the PCV valve might have been re routed. I included a picture below to show what I'm talking about. He has checked the hoses, and sprayed ether around to see if it changes and it did not. In just visually inspecting the hoses, not only do I not find any leaks, but I cannot find any hoses that are even remotely not brand new looking.
I took my wife for a little ride when I got home, and I was noticing a whining noise coming from the cabin that I hadn't noticed on the drive home. I'm wondering if that's the fuel pump going bad (over a half tank of fuel), and coupled with the codes if that's the problem, and the car literally is running lean. I included a link to a youtube video I uploaded. Please note, in the video, on my phone, the noise is WAY louder than it seems inside the car. Playing it through my speakers on the computer now, it's not quite as loud. YMMV. Does it whether the AC is on or not.
Thanks in advance everyone! Can't wait to sort this thing out and get it racing.
https://youtu.be/hWp9nX-f6rc
I know these codes, from what I've read and searched, are typically vacuum leak codes. I cannot find anything wrong with any of the vacuum stuff, however, my buddy was the second or third owner, and all of the mods the car has were not done by him. I was looking and it appears also the PCV valve might have been re routed. I included a picture below to show what I'm talking about. He has checked the hoses, and sprayed ether around to see if it changes and it did not. In just visually inspecting the hoses, not only do I not find any leaks, but I cannot find any hoses that are even remotely not brand new looking.
I took my wife for a little ride when I got home, and I was noticing a whining noise coming from the cabin that I hadn't noticed on the drive home. I'm wondering if that's the fuel pump going bad (over a half tank of fuel), and coupled with the codes if that's the problem, and the car literally is running lean. I included a link to a youtube video I uploaded. Please note, in the video, on my phone, the noise is WAY louder than it seems inside the car. Playing it through my speakers on the computer now, it's not quite as loud. YMMV. Does it whether the AC is on or not.
Thanks in advance everyone! Can't wait to sort this thing out and get it racing.
https://youtu.be/hWp9nX-f6rc
That whirring noise sounds like the throw out bearing or the bearings in the torque tube.
If parked and on if you push in the clutch pedal the noise will stop.
#3
Melting Slicks
I agree the PCV is stock. The noise doesn't sound like the fuel pump. A quick and dirty way to determine if it is the fuel pump is to turn on a directional. The sound will fluctuate with the turn signal.