Knocking sound at idle

[IJ.]

GJ: I agree that doesn't sound like RodKnock!

It's like it's something rotational rodknock is usually only on the firing stroke so there are gaps in the noise,
that's all the time!

 

[huntin5L]

yeah i don't think it is. I also run 10w30 is that bad, the motor likes to eat it up too, about a quart in 1k miles

 

[Bigdough666]

Im willin to bet its valve clatter. Mine is doin the same thing. Im taking it to getthe valves adjusted this week.

 

[chriso]

Sounds to me something either rotating like something hitting the timing cover or maybe an injector, spark plug or valve clanking. Just my .02 cents from listening to the video. Maybe a loose bolt in the flywheel.

 

[huntin5L]

yeah i think it might be valve clatter, what do you think it will cost to have that adjusted?

 

[huntin5L]

It is so constant and the noise doesn't change, so i almost positive it is nothing rattling.

 

[TurboSupra7]

alright guys I tightened the shit out of the harmonic balancer, and voila, no noise as of yet....thank you good people of the forums!

 

[huntin5L]

hmmm...changed my oil to 20/50...The noise is still there also tightened my hb for giggles. Still nothing. Can't figure this one out, cause i can't hear it under my hood, only in the car.

 

[suprarcr89]

good to see it fixed ive had the harmonic balancer problem myself....

enjoy your supra

 

[huntin5L]

I think i f-n figured it out. I took my car into the shop today at my work. Sure enough he said it was my blower fan making the noise. I was like ok, didn't believe him. I got home a minute ago and started slowly turning the key to the off position, when i did that it go to the point where the rpms dropped dead to below zero as if the car was off. But, it wasn't. The car was on, but it turned off the blower inside the dash somewhere. No more noise. So just by chance of doing that i found my problem. Now, where the hell is that blower motor in the dash. Anybody?

 

[chriso]

Now, where the hell is that blower motor in the dash. Anybody?

Behind the glove box

 

[huntin5L]

It sounds like its behind the guage cluster.

 

[Travisimo]

huntin, I have the exact same sound, but I get it very randomly. I drove around for 10 minutes hearing it, got back home and read here for 20 minutes. I go back to the car and its gone!

 

[huntin5L]

It is sooo annoying. Sometimes its worse than other times. It gets worse when revving the motor Too. But at a standstill it just gets annoying. It is like an echoed knock. Does anybody have any ideas about how to get to it. It sounds like its behind the guage cluster somewhere.

 

[huntin5L]

Anybody know?

 

[TurboSupra7]

maybe u should check your speedo cable, that seems like it could possibly make that kinda sound, especially if u hear it from behind the gauges...

 

[huntin5L]

well i can't hear it outside the car or underneathe the hood

 

[huntin5L]

where is the speedo cable at. How could a cable make that noise though

 

[huntin5L]

actually, it is not a fan...Now it has been narrowed down to some kind of pump that is making the noise. At least that is what my neighbor thinks anyways. God i hate that sound. But at least i fixed my boost problem. One of the two (roughly)2 inch hoses on the gold or copper pipe that runs right behind the 3000 pipe needed to be clamped. No more boost trailing off. Holds boost perfectly now.