Hi, my engine developed a new timbre in the last couple of months.
It has more pronounced noise in the high ranges, not a high pitched or squealing, more like a noise from failing bearings . it is continuous and increases with the rpms. not a tranny noise, as it is there when the car is stopped and the clutch pressed.
I have a mima and tried increasing the RPMS with the electric motor , no extra fuel. The noise increased too. So the noise is not coming from the exhaust as there was no change in the amount of fuel burned yet, the noise increased.
I changed the water pump and the idler pulley, The old pulley had a little play but the noise remained. Switching the a/c on or off does not make any difference.
Can you help me with ideas or does anybody remembers similar problem and how he/she fixed it?
My engine is at ~ 270k and am afraid some problem is developing inside....
You didn't happen to over tighten the serpentine belt did you?
Maybe loosen it up a little and see if the noise is still there.
By the "high range", do you mean rpm?
I will loosen it a bit. But the noise was there before that and did not change after the belt, pulley and water pump change..... I did not check the a/c compressor, will check it this time.
I mean it is a comparatively high noise , like the normal engine noise but some addition on the higher end. It is not ticking, banging or clicking noise, not a tap more like the noise of a small ball bearing that is starting to get too loose inside.
Will remove the belt and will check the a/c compressor. At this point I hope it is the compressor.....
You can run it for a while with the belt off, but watch the temp?
Maybe start with a cold engine, you can run it longer.
Maybe the heat shield over the first CAT?
Or even the "donut" after the first cat?
01 MT "Little Red Rocket"
The first "TURBOCHARGED" Hybrid, Insight G1- (01/2003)
MaxIMA Battery (Serial #2), on 8/25/12 @ 301,520 miles
Use: 321,000 mi. @ 57.8 LMPG
can you take a video of the sound and post here or maybe search on youtube for one that sounds similar. I remember a sound started coming from my engine on the 240k mile insight, similar to what you described, but it sounded more like higher pitched. It was on a really cold day, but it went away by itself after a couple of days.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.