First post and yet more transmission questions

Chevylover · 10-23-2009, 08:36 AM

Hello everyone, first post. I have an excellent condition 96 C2500 that I've only had for a few months now. I've changed out all the fluids including the transmission, including the filter. When I pulled the pan I noticed what almost looked like a 2x2 inch piece of velcro, or felt attached to the bottom of the pan right under where the filter inlet goes. Is this some type of pad to help trap minute metal particles? I didnt experience any problems with the trans until shortly after I changed the fluid and filter. Recently I've had problems with it not engaging when the engines cold, but after a few seconds it seems fine. Also, in the past few weeks it has slipped on me a few times, but again it only happens when it's cold. I'm hoping it's not the seals?! From what I gather, some aftermarket filters extend a bit too far down into the pan to the point that it restricts the flow. When I put the pan back on I believe I torqued the bolts on a bit too tight, so last week I backed them out a hair and just made sure they were all snug. I've only driven it once since, but again it wouldnt engage into reverse as soon as I started it up?? I've pulled the dipstick several times to check the fluid and it seems fine(no burnt smell or anything)and the level is fine when checked in accordance with the owners manual. I just have the sneaking suspicion that since there were no problems until I changed it, that the problem has something to do with the filter. I'm far from being a mechanic, but I can usually manage troubleshooting fairly well...so any advice would be much appreciated!

Kennyray · 10-23-2009, 04:29 PM

some after market filters fit tight to the bottom of the pan an restrict flow, thereby reducing pressure. Try an AC delco filter, bet you problem goes away.

fbhart@wk.net · 10-23-2009, 07:03 PM

If you change the filter again you will drain out about 1/3 more oil.

If all goes well in about 10K I would at least drain out the oil in pan. That would be the third change and should have most of the transmission oil changed.

I have a 2000 model 2500 with the 4l80e transmission. Never a problem with transmission, but did lose the torque converter at 82K.
$1000 solved that problem.
i had the flush on my transmission at 60K

Chevylover · 10-23-2009, 09:30 PM

Does anyone know what the felt pad is that I described in my first post? Im wondering if I should have removed it? Maybe the combination of that and a filter that extends lower in the pan is the problem? I'm thinking I should drop the pan and drain the fluid into a clean pan, no sense in not reusing it. I'll remove this felt pad and this time I'll use the thicker rubber gasket that came with the filter. When I changed it just over a month ago, I reused the plastic gasket that was already on it but it's a bit thinner than the rubber one that came with the filter. Maybe using a thicker gasket and removing this pad thats stuck to the pans bottom will create enough clearance between the bottom of the pan and the filter?

Hayden · 10-24-2009, 05:45 AM

Are you sure it was a felt pad. Usually it's a magnet to pick up particles as already described. It will look like a felt pad because there will be alot of stuff stuck to it

Chevylover · 10-24-2009, 11:11 AM

Quote:

Originally Posted by Hayden

Are you sure it was a felt pad. Usually it's a magnet to pick up particles as already described. It will look like a felt pad because there will be alot of stuff stuck to it

That's most likely what it is. I wonder if I should have removed it, or can you just clean it and leave it there?

bradrhale · 10-26-2009, 01:11 PM

you are not supposed to remove the magnet. it is designed to keep particles out of the system. you do need to clean it off though when servicing the tranny though as preventative maintenance so that you may diagnose any potential problems out of it. silvery and no bigger particles than dust is normal

Chevylover · 10-27-2009, 03:44 PM

Just to update.....I think it's fixed. I simply loosened them, went finger tight and then about 1/2 turn, just as they originally were. I had them WAY over torqued, but it worked like a charm! Hopefully the few slips I encountered hasnt damaged anything! I'll clean the magnet when I service it again in spring. Is there a certain way to clean the magnet, aside from wiping it clean with a dry cloth?

bradrhale · 10-27-2009, 05:49 PM

just like you said right there. if you have already put it back together though, i doubt i would worry about it. i dont particularly like going back with do overs.

Chevylover · 10-27-2009, 09:50 PM

Quote:

Originally Posted by bradrhale

just like you said right there. if you have already put it back together though, i doubt i would worry about it. i dont particularly like going back with do overs.

I hate do overs myself and luckily I didnt have to.

10-23-2009, 08:36 AM	#1
Chevylover Full Member Join Date: Oct 2009 Posts: 14	First post and yet more transmission questions Hello everyone, first post. I have an excellent condition 96 C2500 that I've only had for a few months now. I've changed out all the fluids including the transmission, including the filter. When I pulled the pan I noticed what almost looked like a 2x2 inch piece of velcro, or felt attached to the bottom of the pan right under where the filter inlet goes. Is this some type of pad to help trap minute metal particles? I didnt experience any problems with the trans until shortly after I changed the fluid and filter. Recently I've had problems with it not engaging when the engines cold, but after a few seconds it seems fine. Also, in the past few weeks it has slipped on me a few times, but again it only happens when it's cold. I'm hoping it's not the seals?! From what I gather, some aftermarket filters extend a bit too far down into the pan to the point that it restricts the flow. When I put the pan back on I believe I torqued the bolts on a bit too tight, so last week I backed them out a hair and just made sure they were all snug. I've only driven it once since, but again it wouldnt engage into reverse as soon as I started it up?? I've pulled the dipstick several times to check the fluid and it seems fine(no burnt smell or anything)and the level is fine when checked in accordance with the owners manual. I just have the sneaking suspicion that since there were no problems until I changed it, that the problem has something to do with the filter. I'm far from being a mechanic, but I can usually manage troubleshooting fairly well...so any advice would be much appreciated!

10-23-2009, 04:29 PM	#2
Kennyray Senior Member Join Date: Oct 2005 Location: Birmingham, AL Posts: 648	some after market filters fit tight to the bottom of the pan an restrict flow, thereby reducing pressure. Try an AC delco filter, bet you problem goes away. __________________ On a quiet night you can hear a Ford rust

10-23-2009, 09:30 PM	#4
Chevylover Full Member Join Date: Oct 2009 Posts: 14	Does anyone know what the felt pad is that I described in my first post? Im wondering if I should have removed it? Maybe the combination of that and a filter that extends lower in the pan is the problem? I'm thinking I should drop the pan and drain the fluid into a clean pan, no sense in not reusing it. I'll remove this felt pad and this time I'll use the thicker rubber gasket that came with the filter. When I changed it just over a month ago, I reused the plastic gasket that was already on it but it's a bit thinner than the rubber one that came with the filter. Maybe using a thicker gasket and removing this pad thats stuck to the pans bottom will create enough clearance between the bottom of the pan and the filter? Last edited by Chevylover; 10-24-2009 at 04:51 AM.

10-24-2009, 05:45 AM	#5
Hayden Senior Member Join Date: May 2006 Location: Bay City,Michigan Posts: 382	Are you sure it was a felt pad. Usually it's a magnet to pick up particles as already described. It will look like a felt pad because there will be alot of stuff stuck to it __________________ There Is No Replacement For Displacement

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10-23-2009, 07:03 PM	#3
fbhart@wk.net Senior Member Join Date: Mar 2007 Posts: 115	If you change the filter again you will drain out about 1/3 more oil. If all goes well in about 10K I would at least drain out the oil in pan. That would be the third change and should have most of the transmission oil changed. I have a 2000 model 2500 with the 4l80e transmission. Never a problem with transmission, but did lose the torque converter at 82K. $1000 solved that problem. i had the flush on my transmission at 60K

10-26-2009, 01:11 PM	#7
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,015	you are not supposed to remove the magnet. it is designed to keep particles out of the system. you do need to clean it off though when servicing the tranny though as preventative maintenance so that you may diagnose any potential problems out of it. silvery and no bigger particles than dust is normal

10-27-2009, 03:44 PM	#8
Chevylover Full Member Join Date: Oct 2009 Posts: 14	Just to update.....I think it's fixed. I simply loosened them, went finger tight and then about 1/2 turn, just as they originally were. I had them WAY over torqued, but it worked like a charm! Hopefully the few slips I encountered hasnt damaged anything! I'll clean the magnet when I service it again in spring. Is there a certain way to clean the magnet, aside from wiping it clean with a dry cloth?

10-27-2009, 05:49 PM	#9
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,015	just like you said right there. if you have already put it back together though, i doubt i would worry about it. i dont particularly like going back with do overs.

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