Noise: Vacuum leak or a relief valve?
#1
Noise: Vacuum leak or a relief valve?
I have a whistling noise when I blip the throttle both on engine acceleration and deceleration. I just reinstalled the emissions air control valve and air pump, since then I have been hearing a whistling noise like a gasket is not set so something... But I just reinstalled, cleaned, and added silicone to all the gaskets aside from the ACV to manifold.
Any ideas on this?
Any ideas on this?
#3
I had the UIM off about 8x already, checked everything over, I going to do it again and double check my vacuum line routing. The way it is set up is for simplified emissions, but I added the ACV back in plus the solenoids/air pump. The only questionable area was were the relief 1 (b) solenoid got its vacuum from, looked on the vacuum rack and it teed with the switching (c).
And looking at the vac diagram now, I may not have the check valve in there, I am going to add the check valve to the line (relief/switching) and see if that corrects it, it maybe sucking air thru the vent(s) on those two solenoids.
#4
Alright so added the check valve, it still does it.... However this time I decided to disconnect the air pump, the whistle/noise goes away, its more like a screach for one second, both on engine accel/decel. The only gasket I did not add silicone too was the ACV, so I am going to tear the uim back down and once again recheck all the vac lines and proper routing....
I will have to see if I can get audio/video of the noise, maybe someone has come across this already.
I will have to see if I can get audio/video of the noise, maybe someone has come across this already.
#5
Well the audio/video is not going to happen, I do not have camcorder, my dslr does not do video, and my phone is not a compatible format to be uploaded anywhere..... Listening to it again its more like a screaching noise... I know its hard to describe on imagine.... Could this noise be the relief valve opening in the ACV??
I checked everything (wiring and vac lines) over again its all good, I just added silicone to the ACV gasket, I will give it some time to setup and see what happens... But I do know its emissions related, seeing as when I disconnected the air pump wiring it stopped.
I checked everything (wiring and vac lines) over again its all good, I just added silicone to the ACV gasket, I will give it some time to setup and see what happens... But I do know its emissions related, seeing as when I disconnected the air pump wiring it stopped.
#6
Looking at the service highlights book, the air pump is sending air to the cat for 300-500 secs on a cold start, which is about 5-9mins, perhaps the noise I am hearing has something to do with the air tube to the cat... However I added silicone to the gasket (the reusable metal type), and maybe I did not let the car run 5-9mins+ for that to shut off... I do know the cat got to somewhere in the 320 degrees F mark, which should be plenty of temp..... IDK I am trying to cover all my bases here. I do know, when I got the car it was stock and I do not recall any noise as such when driving, later I removed the emissions controls, going on 4 years, so maybe I was mistaken, or the fact that under driving conditions is different then idling the...
#7
Turned out it was the ACV gasket, I guess the metal "reusable" are not really reusable, added silicone and all good!!
Took it for a drive tonight, DAMN! its been a long time!! So nice so fast! LOL.
Question, this is the first time I have a cone type intake, is it normal for the spooling of the turbos to sound droned out, kinda like its spoolin backwards,lol? I am thinking I am hearing more sucking from the intake then what I am use too.
Also I when I had the uim part the last time I was looking at the wiring for the turbo solenoids mounted on the front the UIM, I had them marked but witch connector goes where, the wiring looks identical on both of them... Or maybe its just dirty wiring.....
Took it for a drive tonight, DAMN! its been a long time!! So nice so fast! LOL.
Question, this is the first time I have a cone type intake, is it normal for the spooling of the turbos to sound droned out, kinda like its spoolin backwards,lol? I am thinking I am hearing more sucking from the intake then what I am use too.
Also I when I had the uim part the last time I was looking at the wiring for the turbo solenoids mounted on the front the UIM, I had them marked but witch connector goes where, the wiring looks identical on both of them... Or maybe its just dirty wiring.....
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