M5OD noise
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M5OD noise
Hi all,
Have an M5OD in an f150. When I bought the truck I had the fluids changed that day. They told me they could not drain the trans. fluid but they replaced it, (because there was none to drain out). That night I made a nice pool of trans fluid in the drive. I went back and asked why they didn't use 90w or something.. ok who knew, I guess they were right but I then replaced the output shaft seal and the 3 plugs at the top rear. After DAYS of letting it set up and dry, I drove it without issue to this very day.
It is however whinny. Is this normal or did the heat that melted the speedometer drive gear (prior to the oil change thing) also change the temper or surface or shape of the gears?
Guess I'm just asking if M5OD's typically do make a little "gear drive" type noise.
Have an M5OD in an f150. When I bought the truck I had the fluids changed that day. They told me they could not drain the trans. fluid but they replaced it, (because there was none to drain out). That night I made a nice pool of trans fluid in the drive. I went back and asked why they didn't use 90w or something.. ok who knew, I guess they were right but I then replaced the output shaft seal and the 3 plugs at the top rear. After DAYS of letting it set up and dry, I drove it without issue to this very day.
It is however whinny. Is this normal or did the heat that melted the speedometer drive gear (prior to the oil change thing) also change the temper or surface or shape of the gears?
Guess I'm just asking if M5OD's typically do make a little "gear drive" type noise.
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There was no trans fluid in it when you bought it. And now it whines a bit. Normal.
Bearings are compromised, possibly gears.
Other wear items are the shift forks.
Plan on putting bearings in it asap, maybe you can save it.
I'd also have the oil changed again to see if you are getting metal in the oil.
Bearings are compromised, possibly gears.
Other wear items are the shift forks.
Plan on putting bearings in it asap, maybe you can save it.
I'd also have the oil changed again to see if you are getting metal in the oil.
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Joined: Sep 2004
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From: Phoenix-or-thereabout
About a year before I had clutch work done I noticed my fluid looking silverish when I changed it, but no shavings in the drain stream... and I did have a bit of a whine. First thought was tranny was going.... the shop gave the trans a good looking over while they had it off, and called me to tell me my shift forks were almost chewed all the way through - the whine I was hearing was the fork rubbing on the internal workings... I don't drive with my hand on the stick, being short and all, but that's how it can happen apparently (I'm going to blame the tall guy I bought the truck from), by resting on the stick, the fork just grinds, grinds, grinds away... So, I agree, drain your fluid - and that you can do yourself on this one, it's no more complicated than changing the engine oil(and use the correct fluid - ATF in these trannys). See what comes out - chunks are bad, but if there is a fine silvery sheen to the fluid it might just be that shift fork....
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Update.
Surprisingly, I have an update, which is odd since I have driven it for such a long time like this with no problem and yesterday while nit-picking things that need to be better on my truck I came up with that concearn... well, today on the way to work, I noticed the truck sounds like the entire exhaust is on the truck with loose bolts. When I put it in gear and drive the rattles all go away.
I am feeling the bearings are going.
So now I am wondering if I can likely replace the bearing (via typical ebay rebuild kit) and keep truckin' or will I have to replace gears and crap.
I know it's not likely anyone will know without tearing into it. It most likely would be easier cheaper quicker to just put a junkyard transmission back on, but i hate that idea since it could be my transmission a month or two ago ya know?
Surprisingly, I have an update, which is odd since I have driven it for such a long time like this with no problem and yesterday while nit-picking things that need to be better on my truck I came up with that concearn... well, today on the way to work, I noticed the truck sounds like the entire exhaust is on the truck with loose bolts. When I put it in gear and drive the rattles all go away.
I am feeling the bearings are going.
So now I am wondering if I can likely replace the bearing (via typical ebay rebuild kit) and keep truckin' or will I have to replace gears and crap.
I know it's not likely anyone will know without tearing into it. It most likely would be easier cheaper quicker to just put a junkyard transmission back on, but i hate that idea since it could be my transmission a month or two ago ya know?
Thread Starter
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Freshman User
Joined: May 2010
Posts: 36
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There was no trans fluid in it when you bought it. And now it whines a bit. Normal.
Bearings are compromised, possibly gears.
Other wear items are the shift forks.
Plan on putting bearings in it asap, maybe you can save it.
I'd also have the oil changed again to see if you are getting metal in the oil.
Bearings are compromised, possibly gears.
Other wear items are the shift forks.
Plan on putting bearings in it asap, maybe you can save it.
I'd also have the oil changed again to see if you are getting metal in the oil.
