Ok so sorry if this isn't the correct place to post this but it seemed like the right spot. So as many of you know I picked up my evo yesterday from my tuner. I picked the car up and he said that there is a buzzing noise that is happening when you drive the car. I am like ok. So driving it this am I hear it. It is weird but its like a solenoid or a relay buzzing when I drive. When I push the clutch in it goes away, I let the pedal out it is quiet for a few mins and it starts over again. It sounds like its coming from either the fuse block under the dash or the kick panel. Does anyone have any ideas what this could be? When the car is on and idling it doesn't do it. So idk what to even look at being I can't find it without driving the car.

 

maybe clutch switch/starting relay? is it still connected?

 

Was thinking the same thing on the switch activating this sound thing?

 

No it is not. I drove the car a couple weeks before I got it tuned and it never made that noise. Now all of a sudden its tuned and its there.

 

I wanna say that the arrow is plugged in its the clutch switch that is unhooked. Slowmotion told me its harder on the thrust bearing pushing you clutch in when you use the clutch to start the car?

 

maybe check the clutch slave and hoses for 3-port thing or fan wires

 

I do know the 3 port is done correctly being my waste gate lines were hooked up backwards, we ran all new wires to the 3 port being Slowmotion did not have the right wires going to the proper channels in the Haltech so we know its right. So maybe it is that clutch switch thing. I will have to look at it this weekend and report back to you guys

 

Ok after driving to work today this thing is annoying. I think it is the Mac valve. Before he had hard wired it in he just had it connected and no noise. He took the connector from the grim speed ebc and now it makes noise. Could this be polarity is backwards? Being this thing sounds exactly like the grim speed does when the battery is low.

 

Yep Mac valves are loud! Depending on the frequency and amplitude of the PWM signal from your ECU they buzz away at between 20 - 60 Hz.
You have to mount it using several soft, thick, rubber washers to isolate the vibration.
If you want to completely silence it, mount it to a bracket with rubber isolators,



and then mount the bracket with isolators to the body.

 

Well done! Mystery sound appears to have been solved!

Wonder why depressing the clutch had an affect on the issue?

 

Tuner said it's cause it's non operational at 1500 RPMs so when I push the clutch down it's seeing nothing for signal.

Where do I get such brackets and hardware? That looks pretty nice and it will keep my ears from bleeding when I'm driving.

 

Click the Amazon link that I put in my post

 

Amazon I need this **** today lol.
And thank you for the link I will order one after work