Rebuilt Transmission "Howls" wth??? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-25-2016
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Rebuilt Transmission "Howls" wth???

I picked up my truck from the shop, where it had the Transmission rebuilt. When I fired it up, and started to drive off, it started to "Howl". (Sorry but that is the Best that I can describe it.) It was Loud and lasted for a few minutes, then subsided. It repeated it a few minutes later, but only lasted for about 30 seconds. This has happened a few more times, since; so I decided to call the Mechanic that did the work, and see what he had to say.
I'm taking it in today around 2, today. But would like Some idea of what it could be. In case he tries to blow smoke up my a**.
Note: It also felt like it was slipping when I went over 35mph when I 1st got it. But that has stopped -I hope!
Does anyone have an idea as to what that horrible Howl is? Thanks for your input.
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Old 07-25-2016
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Are we talking about an auto or manual ?
What was wrong with it that it had to rebuilt ?

You say slipping over 35 mph _ clutch slipping _ probably you're talking about an automatic slipping ???

I don't know allot about auto, but someone who does may want to know these things.

One things for sure, if it was my truck and it was making all that noise and I just spent upwards of 600 bucks to have it rebuilt, I would take it for a drive with the mechanic in the passengers seat.
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Old 07-25-2016
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Before going in I would get it up to "howling speed" on a downhill road and shift into Neutral.
See if the howl is related to engine/torque converter/trans RPMs or rear axle drive shaft RPMs
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Old 07-25-2016
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Thanks Jeff, and Ron; thanks for your suggestions.
My Truck has the 4R55E Automatic Trans.
The thing with that Howling, Ron, is that I don't have to be at any speed per-se. That was with the 'Skipping'. The Howling occurs at any speed. :-/
Though it starts while I'm driving, it will continue when at a stop light for a bit, depending on the length of the Light is Red.
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Old 07-25-2016
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Then it is from the torque converter or front pump most likely, take it back.

The transmission's main shaft, output shaft, spins at the same speed as the drive shaft and rear wheels all the time, no way to disconnect them, so if you are stopped the transmission is stopped, 0 RPMs, so can make no noise

Assuming idle, the engine is at 700rpms and torque converter and front pump are also at 700rpms, but the rest of the transmission is at 0 rpms when stopped, so only possible noise could only come from those 3 things and since no engine work was done...........

My money would be a bad torque converter
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Old 07-25-2016
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Wow iTrader, I was Not expecting to hear that... Don't they replace those when they rebuild them? (Well, I guess he could have gotten a bad one. But a Torque Converter isn't too difficult to change is it? (Like, it wont take him another 3 days to replace it?)
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Old 07-25-2016
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Looks like not too big of a job, but one has to be careful according to this video.
Looks even easier the putting on a new clutch, but more care has to be taken so the splines line up.
If that's all that's needed, it should be only a number of hours (if that) with a proper transmission jack.

Hopefully he didn't force it and damage something.


Last edited by Jeff R 1; 07-25-2016 at 09:34 PM.
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Old 07-25-2016
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He may have jammed it up, Brother; I really don't know. All I know is that a neighbor has a Classic 71 FastBack Mustang that needed a rebuild, and he did a bangup job on it.... (I'm pretty new to the area, so I don't know too much about these guys around here.) All he does is Transmissions and Front Ends though, and has been in the same building for like 30 years...
I'll letcha know what his Diagnostic test reveals tomorrow morning! (I really you're help and input though! Thanks!!!)
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Old 07-25-2016
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If he's been there for 30 years, I can't see him as being so careless as to force in the torque converter or get something wrong.
Probably just a faulty converter.
It will be interesting to see what he says.
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Old 07-25-2016
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Yeah, I am too. I just hope that he doesn't screw me, tryiing to get on to the Next Money Maker.... Ya know?!?!
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Old 07-26-2016
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Well, we tried taking it on the road, but since it's stopped (Yesterday, as a matter of fact); he wasn't able to hear it. He tried to run a Diagnostic, but all it showed was an O2 Sensor. Well, all I can do is hope for the Best. Which just happens to be one of my Forte's... lol Which pretty much sums up the life of a owner, right? :-)
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Old 07-26-2016
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Might of just had air in the system, did the trans fluid need to be topped up since the install?

O2 sensor codes come in many different flavors, and it usually means O2 sensor is working not bad.
So don't change anything and post the actual code number if you got it or get it
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Old 07-26-2016
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Hi Ron, I will go back and get that Code when I can. And Yes, it did indeed need about a Pint or so of Fluid. (Checked it today)
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Old 07-26-2016
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Well that's a relief...
Just low oil and air in the system...
When you said the guy had been there for thirty years, it just didn't make sense that he would be careless enough to screw up a job.
Although it was low on oil, strange why he didn't have you come back or tell you to check the oil after a few days.
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Old 07-26-2016
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I had to pick it up after hours, so I didn't have the chance to talk to him. We were both pretty busy that day... Life Lesson learned though... Whew
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