*See video link at the bottom of this post*
About a month ago, my car started developing a ticking noise. At first, it was a just a ticking noise and seemed to have no affect on performance. The ticking got louder and faster with higher rpms. I did a lot of searching on here and thought it might be a lifter, but the ticking didn't go away as the engine warmed up, but rather it made very little noise on a cold start and got louder as the engine warmed up. I added an oil thickener -- no change. Changed oil -- no change. Changed timing chain/gears/tensioner -- really no change, except for after a while, I could here more of a "knock" along with the tick.
As it stands, on cold start, there are a few ticks right as it starts, then they go away and the engine sounds normal. As the car warms up, the ticking/knocking becomes much more prevalent. After a while of driving (maybe 10+ miles) there is a noticeable drop in acceleration off the line. It's almost as if there is a governor (perhaps knock sensor kicking in to retard timing?)
Finally, I brought the car to a transmission shop to have a look at it (I've also been experiencing hard shifts between 1-2 and 2-3 every once in a while, but it goes back to normal if I turn off the car and then back on again. Related issue?) and the transmission shop said they saw the torque converter move in and out when they stepped on the gas. they recommended I look for a new engine. :p
1999 Camaro 3.8
A little over 70,000 mi
4L60E
Stock accept I removed the air silencer and MAF screen and there is some aftermarket muffler (not sure what it is, it was on the car when I got it)
I should also mention that I've listened to the engine with a stethoscope and was not able to pinpoint the noise. It sounded like it was coming from everywhere. Also, way back when it first started, I took the serpentine belt off and the tick still didn't go away.
Here is a video I took yesterday of the noise to give you an idea. You can hear the knock at idle and as the rpms go up, you can hear the tick come in as well.
http://www.youtube.com/watch?v=1OwvI...e=channel_page
I'm out of ideas. Any suggestions at this point would be awesome.
About a month ago, my car started developing a ticking noise. At first, it was a just a ticking noise and seemed to have no affect on performance. The ticking got louder and faster with higher rpms. I did a lot of searching on here and thought it might be a lifter, but the ticking didn't go away as the engine warmed up, but rather it made very little noise on a cold start and got louder as the engine warmed up. I added an oil thickener -- no change. Changed oil -- no change. Changed timing chain/gears/tensioner -- really no change, except for after a while, I could here more of a "knock" along with the tick.
As it stands, on cold start, there are a few ticks right as it starts, then they go away and the engine sounds normal. As the car warms up, the ticking/knocking becomes much more prevalent. After a while of driving (maybe 10+ miles) there is a noticeable drop in acceleration off the line. It's almost as if there is a governor (perhaps knock sensor kicking in to retard timing?)
Finally, I brought the car to a transmission shop to have a look at it (I've also been experiencing hard shifts between 1-2 and 2-3 every once in a while, but it goes back to normal if I turn off the car and then back on again. Related issue?) and the transmission shop said they saw the torque converter move in and out when they stepped on the gas. they recommended I look for a new engine. :p
1999 Camaro 3.8
A little over 70,000 mi
4L60E
Stock accept I removed the air silencer and MAF screen and there is some aftermarket muffler (not sure what it is, it was on the car when I got it)
I should also mention that I've listened to the engine with a stethoscope and was not able to pinpoint the noise. It sounded like it was coming from everywhere. Also, way back when it first started, I took the serpentine belt off and the tick still didn't go away.
Here is a video I took yesterday of the noise to give you an idea. You can hear the knock at idle and as the rpms go up, you can hear the tick come in as well.
http://www.youtube.com/watch?v=1OwvI...e=channel_page
I'm out of ideas. Any suggestions at this point would be awesome.
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