CrackerJackToy

iTrader: (24)

I noticed this the other day when I got out of my car to lower my garage down... that there was a knocking noise coming from the front driver-side tire/suspension area. I went into my car, & turned off the a/c, & the noise went away. When I turn my a/c on, the knocking noise comes back. A friend of mine said it may just be the a/c fan rubbing on something, but under the hood i dont hear it, or see anything out of the ordinary.

So I had mitsubishi take a look at it since I had a motor mount squeaking & they were going to replace it... and they said they couldnt 're-create it'... which I find absolutely false, because as soon as you turn the a/c on, it does it. Kinda like saying you cant find the dirt that you stand on, or the sky thats above you, but whatever. Ill have them take a look at it again when I get my new motor mount in (ordered of course, nothing in stock)... but in the mean time, can anyone give me a heads up to what this may be?

Thanks...

HalfFastGSR

My A/C compressor is pretty noisy as well. I think it's just another rattle that comes with the car (such as the ToB and certain interior parts).

Edit: If the sound is a recent development or especially loud, you may need a new compressor clutch (or compressor for that matter).

BlueDemon

iTrader: (22)

Man the dealersh** you went to don't know smack about evos but if by luck they get to fix your problem then good for you.

My evo also makes a noise when the A/C is on and is the TOB chatter noise that gets worse when the A/C is on, when is off it dissapears. Maybe that's what your hearing.

Try recreating that noise again and press down the clutch pedal. If it dissapears then is just the TOB.

Skylineracer

iTrader: (21)

tob??? i also get this with my A/C and the car is new LOL

CrackerJackToy

iTrader: (24)

I tried this earlier today & sure enough, when i put the clutch in, the noise went away. My car has a new clutch (3 months old), I bought my car at a dealership and couldnt talk to the original owner. So I googled the guys name on the title & called him. It was the owners dad & he said they JUST put a new clutch in, but didnt know the brand. He said it was expensive though. Anyhow, the clutch sucks IMO. I got locked out of any gear if i try to shift fast over 5000 rpm. Figure the TOB wasnt replaced either.

DAve4g64Mitsu

iTrader: (2)

yea all mitsbishis have rattling throw out bearings lol it just comes with the program

DAve4g64Mitsu

iTrader: (2)

oh and the paper thin fenders also lol ever tried laping your fenders with ur nail gently u can hear its like paper thin

GTVEVO

iTrader: (22)

Its a normal noise, I have yet to hear one that doesn't do it. It isn't tied to any other issue.

PHDoc19

iTrader: (9)

Whew! That's a relief. I thought I was the special guy with the noisy AC.

BlueDemon

iTrader: (22)

Yeah it is recommended to change the TOB for every clutch replacement you do on the car. Sometimes a mechanic may determine that the TOB could be re-used if there's no noticeable problem with the TOB but most mechanic (the good ones at least) will tell you to change the TOB just to be on the safe side. You woldn't want to drop the transmission again cuz u re-used the TOB and something went wrong with it after one night at the track, Ouch!

Oh yeah the TOB noise you hear right now is perfectly normal with the evos unless it gets really bad and you get stuck on a gear that you can't get out of.

Edit: Also if adjusting the clutch pedal to change the engagement point won't fix the lockout issue, go to a good shop that have past experiences with evos and asked them for their advice on the problem. Maybe is the clutch, maybe not. I wouldn't trust the dealership for any transmission/engine related problem cuz their usual answer is to replace random parts with new ones and that may come out of your pockets .