4r70w Whining Sound?

[SSDDBRONCO]

4r70w pan has sump like original c-4 pan , make sure to get the 4r70w deep sump filter not the aode 2wd filter and that no one has installed incorrect filter in past . Can take pan with you if going to Transtar and they will make sure you get correct filter or just take a picture of pan for them .

Just called them they have plenty in stock. Part number is A76010EA. Filter looks like the one in the link. But I'll take my old one as well.

https://www.transmissionpartsdistri...ission-filter-aftermarket-fits-96-2wd-94-4x4/


Did you say Wix will also work too? Like this one?

https://www.oreillyauto.com/detail/.../5260/automotive-suv-1998-ford-explorer?pos=3

Edit: nevermind I noticed you said WIT nox WIX haha

 

[77silver ranger]

Wix is the good stuff , but filtran is trans oe supplier for most manufacturers , if wix offers trans filter it is probably a filtran rebranded. Filtran filters usually always have logo cast into plastic. But yes that was WIT , Transtars competition .

 

[SSDDBRONCO]

Wix is the good stuff , but filtran is trans oe supplier for most manufacturers , if wix offers trans filter it is probably a filtran rebranded. Filtran filters usually always have logo cast into plastic. But yes that was WIT , Transtars competition .

Thanks. I was able to get the Filtran filter from Transtars. Appreciate your help.

 

[burnout]

Gear whine can be normal. If you've only had the trans for a couple months it could be nothing. If you pull the pan be careful when lowering it not to tilt it a lot. If there is metal in it from the planetary gears it will be settled towards the rear of the pan. Some metal in the pan (very little) is acceptable (normal metal will be gathered in the lowest spot). Then, break the filter open and look for debris inside (don't cut it with a saw as this will create false debris).
Before you tear into it, look for any drivetrain contact with the body... all transmissions/gear boxes whine, usually you can't hear it. Any contact with the body can amplify normal whine greatly.

 

[SSDDBRONCO]

Ok here are some pictures of the transmission pan. As you can see there are little metal particles. I'm not sure if this is too much or normal? The picture with my fingers is the what I rubbed off the magnet.

 

[SSDDBRONCO]

This is inside the filter. As you can see little flakes of metal but nothing crazy.

 

[Viperwolf1]

100 miles, not normal. Looks more like 200K miles with no service.

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[SSDDBRONCO]

100 miles, not normal. Looks more like 200K miles with no service.

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What do you think might be the problem?

 

[Broncobowsher]

The black stuff in the bottom is typically clutch material, non-magnetic. Gears wearing make fine iron dust that sticks to the magnet.

Just looking at the pictures I would think that was a 200k never serviced transmission as well. If that is 100 miles, something is very wrong. Was it slipping a lot?

That transmission is coming out and needs going through again. As for what went wrong, I don't know. I'm not good at diagnosing by looking at sludge. I do better by driving and listening/feeling.

 

[SSDDBRONCO]

The black stuff in the bottom is typically clutch material, non-magnetic. Gears wearing make fine iron dust that sticks to the magnet.

Just looking at the pictures I would think that was a 200k never serviced transmission as well. If that is 100 miles, something is very wrong. Was it slipping a lot?

That transmission is coming out and needs going through again. As for what went wrong, I don't know. I'm not good at diagnosing by looking at sludge. I do better by driving and listening/feeling.

No slipping at all. Shifts really nice through all gears. Only problem I was having is the whining sound in reverse and first gear and possibly very faint in second gear. Other than that nothing to really say the transmission is not performing correctly. Even after driving it for an hour in stop and go traffic, transmission was at 170° according to the US Shift controller.

 

[77silver ranger]

Would hold pan fluid drained into in sun light if possible, if fluid has sparkle that moves when you move pan slightly not a good sign . Those have a Torrington bearing that fails in planetary section . Eventually needle bearings can get into gears and make a real mess . They updated the bearing for some models . Depending how much sparkle in fluid whether to continue driving . 4r70w geartrains ( planetary Assy ) not cheap . Also very important to make sure you are gettin adequate cooler flow ( no restriction ) 1 quart in 20 seconds from return line is test . If you don't have lots of sparkle and do have adequate cooler flow would stop driving if noise gets any louder . 4r70w tend to be noisier than most units especially in 1st.

 

[SSDDBRONCO]

Would hold pan fluid drained into in sun light if possible, if fluid has sparkle that moves when you move pan slightly not a good sign . Those have a Torrington bearing that fails in planetary section . Eventually needle bearings can get into gears and make a real mess . They updated the bearing for some models . Depending how much sparkle in fluid whether to continue driving . 4r70w geartrains ( planetary Assy ) not cheap . Also very important to make sure you are gettin adequate cooler flow ( no restriction ) 1 quart in 20 seconds from return line is test . If you don't have lots of sparkle and do have adequate cooler flow would stop driving if noise gets any louder . 4r70w tend to be noisier than most units especially in 1st.

So just went outside to look at it under the sun and it does exactly as you described. I feel like it's a lot of sparkle but I'm not sure as I've never dealt with transmission fluid since I take my daily to a transmission shop for servicing.

As for testing the return line do I just disconnect the line and put it into a container and start the bronco? I have a transmission cooler so where would be best to disconnect the return like to test for 20 seconds?

 

[gnpenning]

Yes on the return line, just pick a spot that is the easiest for you, unless you have a 2nd filter.

 

[77silver ranger]

Return line for 4r70w is top line at trans , this is a 2 person job . With trans half qt or so over full , attach hose to top line at trans routed to 1 gallon clear jug is easiest . Start engine for 20 seconds then shut off engine should have at least a qt in jug . If not you may have restricted cooler or pump volume low . If you have to go into trans will want to make sure trans cooler is flushed till clean and blow out lines . Transtar can sell you cooler flush in a can and may be able to recommend best local independent shop or shops to talk to .

 

[SSDDBRONCO]

Cool thanks for all the help!

 

[gorf]

Return line for 4r70w is top line at trans , this is a 2 person job . With trans half qt or so over full , attach hose to top line at trans routed to 1 gallon clear jug is easiest . Start engine for 20 seconds then shut off engine should have at least a qt in jug . If not you may have restricted cooler or pump volume low . If you have to go into trans will want to make sure trans cooler is flushed till clean and blow out lines . Transtar can sell you cooler flush in a can and may be able to recommend best local independent shop or shops to talk to .

Can you confirm top line is return? I'm battling some heat issues and have seen conflicting reports. My top line goes to top of radiator, bottom of radiator goes to bottom of transmission. 4r70w out of 2001 Ford Explorer

 

[77silver ranger]

If you remove top line at trans and start fluid will come out of line ( return from cooler ) if you remove bottom line and start fluid should come out of trans at pressure line . Threaded fitting so good idea to thread a fitting and short piece of line and hose into trans and check both lines at trans one at a time to compare flow rate before and after cooler . Just run both hoses to jug and see which hose fluid comes out of .