Ive posted this before but it had stopped for last few months so I didnt worry with it.
Well now my issue is back.
I have howling/moaning sound coming from the air duct throttle body area. I can remove the entire air duct and the sound is actually coming from the throttle body. I have used some seafoam spray with little help to the issue.
It mostly does this when its cool outside and normally stops after warmup but not always. It only makes noise at 1000 rpm or at idle. Driving around its quiet. At idle it does it unless I just bump the gas, then it gets quiet until 1000 rpm or less.
I have a restrictor plate that goes between the IAC and where it mounts onto. If I install it it there is no sound but if I remove it well all the above. It was designed for the hanging throttle issue some Machs have. Mine doesnt have it and having it installed makes the idle drop too fast especially when cold out and makes for rough shifts so I dont use it.
Replaced IAC before and that did nothing.
Anyone have any idea whats going on?
Im lost here.
2004 Mach 1
Well now my issue is back.
I have howling/moaning sound coming from the air duct throttle body area. I can remove the entire air duct and the sound is actually coming from the throttle body. I have used some seafoam spray with little help to the issue.
It mostly does this when its cool outside and normally stops after warmup but not always. It only makes noise at 1000 rpm or at idle. Driving around its quiet. At idle it does it unless I just bump the gas, then it gets quiet until 1000 rpm or less.
I have a restrictor plate that goes between the IAC and where it mounts onto. If I install it it there is no sound but if I remove it well all the above. It was designed for the hanging throttle issue some Machs have. Mine doesnt have it and having it installed makes the idle drop too fast especially when cold out and makes for rough shifts so I dont use it.
Replaced IAC before and that did nothing.
Anyone have any idea whats going on?
Im lost here.
2004 Mach 1