h********e 发帖数: 1130 | 1 Sorry can't type Chinese in this computer.
Here is recording link (noise start at 1:25) https://soundcloud.com/hiac-
banks/noise-1-25
Last year I got into an accident, and my primary car is total, so I started
to drive this backup car, a 2002 Honda civic. life is a little bit messy
after the accident, spent a lot of time on the medical/billing, and paid
little attention to this old car until today.
since about 4 months ago, I notice the car is slow to start. Every day I
drove about 0.25 mile in subdivision, then get to local road for 1 mile,
then hit the highway and drive about 20 mile. I feel the car is lack of
power in the first 0.25 mile, like 10-15 mph at most. then on local road, I
can drive 40 mph. and on highway, I can slowly speed up to 60-70, occasional
to 75. Today (about 40 degree) I did some shopping and when I drive off the
supermarket's parking lot, I heard some metal grinding noise from the front
(engine?), my speed is about 10-15mph. That noise is not continuous, and it
seems like the noise is gone when speed go up to 45, or maybe the other
noise (wind etc...) make it less obvious. Once I got home, I park my car,
and start the engine, with ac off, here is my recording.
https://soundcloud.com/hiac-banks/noise-1-25
the engine is about 800rph when it's idle, then I give it some gas, the
speed increase to 1.4k rph then I heard the grinding noise (start at 1:25 in
the recording), the noise is not constant/continuous, if the car is idle,
there is no noise. I also tried the same test with ac turn on. i didn't hear
noticeable difference.
On August 2014 the AC freeze up while I drove on highway, and I heard the
similar metal grinding noise (just much louder and constant). I replaced the
AC system, and also did the oil change, the mileage is 103k at that time.
Now the mileage is 113k.
I wonder if lack of oil change could cause the grinding noise, or it might
be something else, such as Idler pulley bearing, transmission, water pump,
and AC bearings, power steering pump, timing belt? I didn't replace any of
these item (except replacing AC on 2014)
this is an old car, and if the cost to fix it exceed $1000, I probably will
start to look for a new car.
Many thanks! |