Slight knocking from passenger side
#1
Acura Member
Thread Starter
Slight knocking from passenger side
A little over a month ago I purchased a 2006 TL 5AT. Within the last week I've noticed that upon a cold start up (further more so when it's a little chilly in the morning as well) that there will be a slight knocking sound coming from the passenger side of the engine bay. My first thought is possibly the timing belt tensioner or the serpentine belt tensioner. I dont see the serpentine belt flapping around or causing a knocking sound though. The knocking sound does goes almost completely away once the car is up to operating temperature so that kind of confuses me a tad. Any suggestions as the what the noise could be?
#3
Acura Member
Thread Starter
Timing belt tensioner is a common issue with the TL.
This is the issue, this little thingy.
https://www.amazon.com/Aisin-BTH-001...70_&dpSrc=srch
Check this video
https://www.youtube.com/watch?v=N00-znRoRg8
This is the issue, this little thingy.
https://www.amazon.com/Aisin-BTH-001...70_&dpSrc=srch
Check this video
https://www.youtube.com/watch?v=N00-znRoRg8
Yeah I've seen that video Haha I was just thrown off cause the noise goes almost completely away once the engine is warm. I'll definitely look into it though. If only it was a 5 minute job to take the timing belt covers off...
#4
I just had this EXACT problem, cold engine - loud tapping sound from timing cover area, gone once engine warms up. For me it ended up being the timing belt tensioner, it was leaky as hell. I took the timing covers off, the belt wasn't exactly tight but didn't have major slack either.
I replaced the tensioner without taking off the timing belt or crank pulley. I took off the power steering pump and the upper covers, then the lower splash shield and used something to wedge the top-left part of the lower cover to get access to the timing belt tensioner. It is possible to replace it but you may need nimble fingers, pulling the grenade pin on the new tensioner was a b!tch.
I replaced the tensioner without taking off the timing belt or crank pulley. I took off the power steering pump and the upper covers, then the lower splash shield and used something to wedge the top-left part of the lower cover to get access to the timing belt tensioner. It is possible to replace it but you may need nimble fingers, pulling the grenade pin on the new tensioner was a b!tch.
#5
Three Wheelin'
iTrader: (1)
99% your tensioner. I replaced my serp pulleys nope...tappin was still there. It will only get worse and actaully never go away. I orderred a tensioner and will be installing this weekend. keep in mind driving with a bad tensioner is driving on borrowed time you don't want to have to repay if it goes and the belt comes off
dealer wanted $900 lol
tensioner cost $30
if you can diy go for it
dealer wanted $900 lol
tensioner cost $30
if you can diy go for it
#6
Acura Member
Thread Starter
99% your tensioner. I replaced my serp pulleys nope...tappin was still there. It will only get worse and actaully never go away. I orderred a tensioner and will be installing this weekend. keep in mind driving with a bad tensioner is driving on borrowed time you don't want to have to repay if it goes and the belt comes off
dealer wanted $900 lol
tensioner cost $30
if you can diy go for it
dealer wanted $900 lol
tensioner cost $30
if you can diy go for it
Last edited by mayjarjar; 10-26-2018 at 12:10 AM. Reason: Missed word
#7
Suzuka Master
don't forget to reseal the oil pump assembly while you have the TB/WP out.
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