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Sounds crazy...literally. C6 question.

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Old Jul 21, 2001 | 12:39 AM
  #1  
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Sounds crazy...literally. C6 question.

I recently changed the filter on my C6 tranny.

The Purolator kit I got from Pep Boys didn't look exactly like the original...but it fit perfectly. (88 F-150 351W EFI 4x4)

So, every now and then the tranny seems to slip. Also, I could swear the truck now sounds like it has a supercharger...based on the whining noise...when I accelerate. There is no noise when I'm maintaining speed, but when I accelerate it has a whine.

I guess my question is about the crazy noise. Do transmissions make noises like that or could it be that I'm hearing things?

I'm getting ready to pull the pan again because of this. I'd really like to install some kind of plug that would allow for changing the fluid without dropping the pan. Are there aftermarket kits that allow for this?

Thanks!
 
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Old Jul 21, 2001 | 08:03 AM
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Sounds crazy...literally. C6 question.

B&M makes a drain plug and so does Summit. Summits part number is SUM-G1380 it costs $7.50
An auto will whine for a number of reasons...did you recheck your fluid level...they'll whine if they are a couple of quarts low.

Deen Hylton
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Old Jul 21, 2001 | 08:17 AM
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Sounds crazy...literally. C6 question.

Could be the filter is different internally and causing a lack of fluid problem. I'd take the old filter to match it with a new one. The whine sounds like the pump is starving for fluid, and could also cause slipping.

*******
94 E-150 High Top Conversion Van 4.9/C-6
89 Mustang LX 5.0 - 5 speed
 
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Old Jul 21, 2001 | 10:49 AM
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Sounds crazy...literally. C6 question.

I agree with 94Van. I would get an exact match filter and replace the different one. There is a possibility of damaging the trans pump or clutch bands if indeed it is starving for fluid. Jake.

Jakegypsum // Ford fleet, soup to nuts.
 
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Old Jul 21, 2001 | 05:43 PM
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Sounds crazy...literally. C6 question.

Four wheel drive Fords use a different filter than the 2wd version. The 2wd filter will bolt up and vice-versa, but the pickup tube is higher off the pan floor, and will cause a lack of fluid going to the pump. I'd check that filter fast.
 
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Old Jul 22, 2001 | 12:51 PM
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Sounds crazy...literally. C6 question.

Pickup tube?

I never saw a pickup tube when I had the pan off. My brother's girlfriend's father (stay with me here) owns a transmission shop.

I spoke with him on the phone about the problem. He said something about a tube on the 4x4 that isn't on the 2WD version. I have the old filter and there is no tube that I know of. Just the hole in it to allow the fluid in through the screen.

He said something about this tube for the 4x4 being very hard to come by for this particular application.

Did I miss this tube in the process?

I really don't want to pull the pan back off, but I REALLY don't want to have my tranny rebuilt. It ran great until I changed the fluid and filter. Now there is some kind of whine when I accelerate and the engine will surge when I take a really sharp corner.

The fluid level is in the crosshatched area with the engine running in park.

I was surprised at how little fluid came out of the pan originally. Obviously there must be quite a bit still in the torque converter.


 
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Old Jul 22, 2001 | 02:21 PM
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Sounds crazy...literally. C6 question.

OK, need help ASAP!!!

I just went to Pep Boys for a new filter. The one that matched identically was the one for a 2WD?!?!?

How is this possible? Are the transmissions different or just the pans?

The new filter matches perfectly. I guess I'll have to drop the pan and replace the 4x4 filter with the 2WD filter.

Is there a way to drain the torque converter on this beast? I'd like to remove as much of the old crappy ATF as possible.

Thanks.
 
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Old Jul 22, 2001 | 06:53 PM
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Sounds crazy...literally. C6 question.

OK, need help ASAP!!!

I just went to Pep Boys for a new filter. The one that matched identically was the one for a 2WD?!?!?

How is this possible? Are the transmissions different or just the pans?

The new filter matches perfectly. I guess I'll have to drop the pan and replace the 4x4 filter with the 2WD filter.

Is there a way to drain the torque converter on this beast? I'd like to remove as much of the old crappy ATF as possible.

Thanks.
It is possible that the trans pan or the trans has been replaced. The easiest way to tell if the pan is correct for the 4wd is to measure the depth of the pan at its lowest point. It should be around 3 1/2 inces, + or -. The 2wd pan is around 1 1/2 inches deep and is a flat pan. The torque convertor should have a plug on the front side, sticking thru the flywheel. A 7/16 socket will work to remove the plug. Have between 12 and 15 qts. of fluid handy to refill after draining the pan.
 
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Old Jul 23, 2001 | 01:08 PM
  #9  
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Sounds crazy...literally. C6 question.

The pan on mine is flat. There is a 24 stamped on the tranny.

I looked for a bolt near the flywheel. There seems to be some type of cover over the flywheel. I'll have to see if I can get to it.

BTW, what would you expect to lose volume-wise if all you do is drop the pan? I think I lost a grand total of 4 qts.
 
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Old Jul 23, 2001 | 02:29 PM
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Sounds crazy...literally. C6 question.

It doesn't sound good!! It sounds like the filter was too high and resulted in sucking air in through the tranny oil pump. You probably have a lot of bubbles in the fluid. If it's slipping, it's probably too late to avoid a rebuild. The air and poor circulation will tend to overheat the fluid and cause it to turn a dark brown.

Torque converter: Remove the dust cover on the front of the tranny (usually 2-3 bolts), that will expose the flexplate which is bolted directly to the converter. Turn the flexplate until a hole in the flexplate reveals a bolt into the torque converter. This is the converter drain plug. Remove it and drain the remaining fluid. All total between the pan and converter, you will probably capture abour 10-12 qts of fluid that will have to be repaced.


'82 F150 2WD w/351W (orig 300 I6)
Slik
 
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Old Jul 23, 2001 | 03:29 PM
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Sounds crazy...literally. C6 question.

How could the 4x4 filter be too high? Wouldn't it actually sit lower in the pan? The 4x4 filter should easily reach the fluid in the 2x2 pan.

The fluid still looks brand new. Hopefully a rebuild will be avoided. I'd hate to have to rebuild the trans because of an $8.99 part.
 
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Old Jul 26, 2001 | 06:45 PM
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Sounds crazy...literally. C6 question.

As long as the fluid doesn't look dark or smell burnt, it should be ok. I would change the filter and fluid and drive it to see if it is acting up. If it feels like it is shifting fine, then I wouldn't worry about it.

88 F-150 4X4 XLT Lariat w/5.0 EFI 5 spd (DAILY DRIVER)
86 Ranger 2WD w/2.3L EFI 5 spd to be 351W 4bbl C4 (NEW TOY- DETAILS WHEN FINISHED)
85 Old Cutlass Supreme 350/TH350 Holley 4160,Edelbrock Performer intake, el-cheapo headers, General Kinetics 270H series cam, 15.588 best 1/4 mile with original 10 bolt 2.41 gears (OLD TOY)
 
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Old Jul 26, 2001 | 10:57 PM
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Sounds crazy...literally. C6 question.

 
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