E4OD Issue (Surprise)
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E4OD Issue (Surprise)
On the way home from the store, truck warmed up, it shifted into OD at 37ish MPH and it felt like it was vibrating a bit. So at the next light I took it out of overdrive and got to 40 and it felt okay.
Then a couple miles down the road, I noticed an odd noise and thought it was car next to me. Same noise at the next light - like a fan blade hitting something.
Put the truck back into OD and it vibrated again. Did this at as I accelerated at every light or stop. Seemed to be tied to engine RPM a couple times. It's a hard feeling to describe. As if a tire is slightly out of balance.
Thoughts?
Thanks
Then a couple miles down the road, I noticed an odd noise and thought it was car next to me. Same noise at the next light - like a fan blade hitting something.
Put the truck back into OD and it vibrated again. Did this at as I accelerated at every light or stop. Seemed to be tied to engine RPM a couple times. It's a hard feeling to describe. As if a tire is slightly out of balance.
Thoughts?
Thanks
Post Fiend
Joined: Dec 2010
Posts: 10,121
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From: Orrville, Ohio
I think the first thing I would suggest is that you pull the inspection cover off between the engine and transmission and make sure that you aren't dealing with a cracked flex plate. That sounds a lot like a cracked flex plate to me. Make sure that you can't move the ring gear forward and back and that everything looks good and tight in there.
Lead Driver
Joined: Mar 2006
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From: western SD
I think the first thing I would suggest is that you pull the inspection cover off between the engine and transmission and make sure that you aren't dealing with a cracked flex plate. That sounds a lot like a cracked flex plate to me. Make sure that you can't move the ring gear forward and back and that everything looks good and tight in there.
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Post Fiend
Joined: Dec 2010
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From: Orrville, Ohio
Yeah it could if the flex plate is completely broken. If it were me, I wouldn't drive it until you get a chance to check it out. That's a good way to bust the bell housing on the trans.
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Post Fiend
Joined: Dec 2010
Posts: 10,121
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From: Orrville, Ohio
That's a pretty common swap. Was the truck originally a ZF truck? You have all the necessary parts and pieces to make the swap (PCM, Trans crossmember, driveshafts, clutch pedalbox,etc)? Auto vs Manual debate aside, the ZF is a more "bulletproof" setup in my opinion. This coming from a guy that currently needs to replace his clutch, (me) lol.
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Hmm. Not sure why I wrote "back in" but no the truck is an all original e4od.
I have the drive shafts, trans, SBC clutch/flywheel, clutch/slave set up and pedals. I need the xmember, floor pan and rear trans harness.
I have the drive shafts, trans, SBC clutch/flywheel, clutch/slave set up and pedals. I need the xmember, floor pan and rear trans harness.
Lead Driver
Joined: Oct 2010
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From: Columbus, Oh
Floor pan and xmember can be modified. I currently run both modified from an E4OD. Although I would prefer (and I'm currently looking) to run a true ZF xmember, just letting you know that can work. The floor pan is just a simple cutout.
Post Fiend
Joined: Dec 2010
Posts: 10,121
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From: Orrville, Ohio
You'll also need either the clutch safety switch and a manual PCM or to plan to do some wiring magic to make everything work. And the transmission is from a diesel pickup, correct (just making sure you know you can't use one from a gas engine)?
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Well you can redrill a 460 ZF5 but some people don't like the gearing, at any rate yes the one I Have is from a diesel.
I will acquire a clutch switch as well. The automatic PCM Will work but people do prefer the manual programming.
I will acquire a clutch switch as well. The automatic PCM Will work but people do prefer the manual programming.