Motor noise.
Thread Starter
2nd Gear Member
Joined: Feb 2008
Posts: 169
From: Clinton, Tn
Motor noise.
So i have this strange kind of rattle coming from the engine compartment. At first i thought it was my ragged trans, it was making all kinds of racket, but after i put the new one in, there is still some noise there. It happens at low rpm's under a very very light load, like 1800-2200ish rpm's or so, and as soon as i give it any gas it quits. Then i hear it again about 5k or so. It won't do it just reving, you have to be driving it. I've raised the hood and had someone rev it incase it might be an "accessory", but i can't hear anything. It does have the head tick, but the noise i hear is something different. Could the timing chain tensioners be wore out? The car runs fine, and has great power. Any ideas? I can try to take a vid so you can hear it if i need to.
Last edited by Justinr1001; Dec 21, 2009 at 02:53 AM.
4th Gear Member
Joined: May 2009
Posts: 1,925
From: DFW, TX
So i have this strange kind of rattle coming from the engine compartment. At first i thought it was my ragged trans, it was making all kinds of racket, but after i put the new one in, there is still some noise there. It happens at low rpm's under a very very light load, like 1800-2200ish rpm's or so, and as soon as i give it any gas it quits. Then i hear it again about 5k or so. It won't do it just reving, you have to be driving it. I've raised the hood and had someone rev it incase it might be an "accessory", but i can't hear anything. It does have the head tick, but the noise i hear is something different. Could the timing chain tensioners be wore out? The car runs fine, and has great power. Any ideas? I can try to take a vid so you can hear it if i need to.
3rd Gear Member
Joined: Aug 2008
Posts: 883
From: Washington
Man I feel like I might have the same kinda noise... Only happens to me at idle though, I think it sounds like a chain clanking noise so I thought the tensioner. When is a good time to do a full tune-up? Im at 48k miles...
2nd Gear Member
Joined: Sep 2006
Posts: 357
From: Nebraska
If you figure it out let me know. I'm trying to problem solve my brothers 04 mach. It is a rattle that sounds like something loose at around 2k rpm's and then goes away. I have no idea unless something is loose, and no lift to check it out myself.
Mach I Section Moderator
Joined: Mar 2007
Posts: 7,140
From: round abouts these parts
this came up locally, here's what we did to fix it.... rather my friend did
04 mach 1 ticking after switching to full synthetic M1...5w 20, so went to a 10w 30 synthetic and put some injector cleaner and 93 octane in it...went away and runs HARD!!
04 mach 1 ticking after switching to full synthetic M1...5w 20, so went to a 10w 30 synthetic and put some injector cleaner and 93 octane in it...went away and runs HARD!!
Mach I Section Moderator
Joined: Mar 2007
Posts: 7,140
From: round abouts these parts