Rattle/resonance from under car when engine cold
#1
Bullitt Member
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Join Date: February 14, 2005
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Rattle/resonance from under car when engine cold
Hi,
I get this rattle/resonance from under my car when I start from cold. The sound is like a driving a car with a tail pipe draging on the ground. It lasts until the motor warms up, and seems worse at about 2500RPM.
The car has the the two bell housing bolts that were missing on some of the early ones, so that's not what's causing it.
Been to the dealer once, left the car overnight, suposedly fixed, now worse than ever...
Thanks,
Paul
I get this rattle/resonance from under my car when I start from cold. The sound is like a driving a car with a tail pipe draging on the ground. It lasts until the motor warms up, and seems worse at about 2500RPM.
The car has the the two bell housing bolts that were missing on some of the early ones, so that's not what's causing it.
Been to the dealer once, left the car overnight, suposedly fixed, now worse than ever...
Thanks,
Paul
#2
I have it...
not from a cold start but through the entire gear range, cruising on the highway too....annoying as hell! sounds like metal to metal vibration as well as that clunky rattle sound...i am having them look into the bell housing bolts this week too, as i had my entire exhaust system looked at last week and they could not findanything, in essence, i have two rattles....
#4
My F-150 baffled ford so much that they actually flew some guys in to assist with the problem...
The problem turned out to be rocks in between the fender well liner and the fender itself.
The problem turned out to be rocks in between the fender well liner and the fender itself.
#6
legacy Tms Member
+1 on the shield- just mentioned that in another thread, mine wasnt loose, but just 'flat'...being flat it tended to 'flutter' a bit (only at low rpm upshifts though). mine I just 'pushed' on to give it a 'bowed' shape, flutter stopped. I wasnt looking for it on mine, just bumped it when working underneath, and heard a familiar sound...get under there and thunp around a bit, but bet that huge heatshield could be it
#7
This one annoyed me for awhile. Really, really emabarassing.
I checked to see if the bell housing bolts were there and they are. But if you look up inside between the housing and the plate, there is an extremely tight clearance there. I'm not sure if its because of the tight clearance, but I'm pretty sure its just that plate resonating. The resonance is dependent on RPM and temperature.
So here's the fix... Just undo the two lower bolts that hold the plate to the bell housing. Put a small spacer (1-2 mm) in between and bolt back up.
It'll be fixed.
I checked to see if the bell housing bolts were there and they are. But if you look up inside between the housing and the plate, there is an extremely tight clearance there. I'm not sure if its because of the tight clearance, but I'm pretty sure its just that plate resonating. The resonance is dependent on RPM and temperature.
So here's the fix... Just undo the two lower bolts that hold the plate to the bell housing. Put a small spacer (1-2 mm) in between and bolt back up.
It'll be fixed.
#8
Team Mustang Source
For what it's worth - http://www.mustangforums.com/fb.asp?m=3829061 But I like HL22's method better.
#9
fixed the issue!!
read this:
http://www.mustangforums.com/m_3772748/tm.htm
"So, I FINALLY got the problem fixed! My normal Ford dealership was closed, so I had to take it to Woodfield Ford in Schaumburg, IL. Luckily, they had seen the problem before - and they're trying to get Ford to issue a TSB about this as it is common. So, here is the solution - and if anyone else has a problem, tell them to call Woodfield Ford in IL - 847 882 5031 - they've fixed the problem before, and did it again with me!
EDIT: the problem was the spacer plate between engine and transmission contacting the back of the engine - print the following out and give it to your dealer if need be! "
(picture in original thread)
EDIT: just saw the post above me...sorry!!
http://www.mustangforums.com/m_3772748/tm.htm
"So, I FINALLY got the problem fixed! My normal Ford dealership was closed, so I had to take it to Woodfield Ford in Schaumburg, IL. Luckily, they had seen the problem before - and they're trying to get Ford to issue a TSB about this as it is common. So, here is the solution - and if anyone else has a problem, tell them to call Woodfield Ford in IL - 847 882 5031 - they've fixed the problem before, and did it again with me!
EDIT: the problem was the spacer plate between engine and transmission contacting the back of the engine - print the following out and give it to your dealer if need be! "
(picture in original thread)
EDIT: just saw the post above me...sorry!!
#10
Team Mustang Source
This one annoyed me for awhile. Really, really emabarassing.
I checked to see if the bell housing bolts were there and they are. But if you look up inside between the housing and the plate, there is an extremely tight clearance there. I'm not sure if its because of the tight clearance, but I'm pretty sure its just that plate resonating. The resonance is dependent on RPM and temperature.
So here's the fix... Just undo the two lower bolts that hold the plate to the bell housing. Put a small spacer (1-2 mm) in between and bolt back up.
It'll be fixed.
I checked to see if the bell housing bolts were there and they are. But if you look up inside between the housing and the plate, there is an extremely tight clearance there. I'm not sure if its because of the tight clearance, but I'm pretty sure its just that plate resonating. The resonance is dependent on RPM and temperature.
So here's the fix... Just undo the two lower bolts that hold the plate to the bell housing. Put a small spacer (1-2 mm) in between and bolt back up.
It'll be fixed.
#12
Team Mustang Source
#15
Diffrent fix
Went to the dealer yesterday, scheduled a fix for Monday, they actually fixed the issue on many vehicles (including Shelby's). Their explanation was that plate was actually vibrating and barely making contact with the flywheel, what they do is pull the trans, remove the plate and grind the flange down so contact is not possible). I feel fortunate that they've done quite a few vehicles already, cannot wait to get rid of the problem. Ford should step up and do something about this......
#17
my thought is this, if indeed the plate is hitting the flywheel, i'd rather eliminate the issue permanently by ensuring that there is no possibility of it happening again by eliminating the plate clearance issue, as well, Ford will be warrantee'ing the repair so IF (a big IF) it happens to resurface, they are on the hook....not knocking the fix by MTAS, he did great investigative work in just locating this anomalie...for me, I'll let the dealer handle....also, it must get pretty hot underneath, not sure if that washer will disintegrate over time and cause' additional headaches...just a thought, not saying one is better then the other...
#18
Team Mustang Source
my thought is this, if indeed the plate is hitting the flywheel, i'd rather eliminate the issue permanently by ensuring that there is no possibility of it happening again by eliminating the plate clearance issue, as well, Ford will be warrantee'ing the repair so IF (a big IF) it happens to resurface, they are on the hook....not knocking the fix by MTAS, he did great investigative work in just locating this anomalie...for me, I'll let the dealer handle....also, it must get pretty hot underneath, not sure if that washer will disintegrate over time and cause' additional headaches...just a thought, not saying one is better then the other...
I personally don't see how the flywheel could be touching the dust shield. The flywheel is bolted to the crank, then has the clutch/pressure plate assembly on top of that
#19
I appreciate the props Jeff, but all the credit for the "2-washer fix" goes to HL22 and his post here http://forums.bradbarnett.net/showpo...82&postcount=7
I personally don't see how the flywheel could be touching the dust shield. The flywheel is bolted to the crank, then has the clutch/pressure plate assembly on top of that
I personally don't see how the flywheel could be touching the dust shield. The flywheel is bolted to the crank, then has the clutch/pressure plate assembly on top of that
#20
Fixed
cost me $100 but I hope to have Ford Customer Service reimburse me as I am just outside Warranty...The fix: Found noise coming from trans bellhousing area, remove trans and inspect found flywheel rubbing on inspection plate, removed, replaced and modified inspection plate, reinstall trans and bleed air from hyd clutch, re-road tes OK..... ....man, my driving experience is 100X more pleasurable.............