I messed up and over filled my 4L60e.
02-11-2017, 11:59 PM
#1
I messed up and over filled my 4L60e. So I over filled my trans. I was on the highway doing heavy pulls and it started puking fluid out the back. Back of my car was entirely covered. Pulled over after noticing and it blew fluid out of every hole it could find, even back out of the dipstick.
I am guessing that the pressure built up so hard the 2nd gear clutch pack must have been engaged at the time of maximum pressure build up. It started slipping right on out of the gear and the engagement felt very weak. Now it is almost gone and I am pretty sure over filling the trans is what killed it. I am pretty bumped. Just want everyone to know, when you read don't over fill, please do yourself a favor and don't over fill. I killed a great transmission tonight and its all my own damn fault.
(From a post that was merged in here) Mine blew out second gear tonight because it was too full and built up too much pressure.
I am guessing that the pressure built up so hard the 2nd gear clutch pack must have been engaged at the time of maximum pressure build up. It started slipping right on out of the gear and the engagement felt very weak. Now it is almost gone and I am pretty sure over filling the trans is what killed it. I am pretty bumped. Just want everyone to know, when you read don't over fill, please do yourself a favor and don't over fill. I killed a great transmission tonight and its all my own damn fault.
(From a post that was merged in here) Mine blew out second gear tonight because it was too full and built up too much pressure.
Last edited by mrvedit; 02-12-2017 at 09:43 AM. Reason: Moderator merged theads - added above line for clarity
02-12-2017, 12:21 AM
#2
What do you mean??? "Mine blew out second gear tonight because it was too full and built up too much pressure." Broke the case? Broke the 2-4 band? Overfilling the transmission cannot not increase line pressure. If way overfull (way more than a quart), it can cause fluctuation in line pressure from aeration, and this in turn can burn up the 2-4 band, and or other clutches....
02-12-2017, 08:23 AM
#3
What do you mean??? "Mine blew out second gear tonight because it was too full and built up too much pressure." Broke the case? Broke the 2-4 band? Overfilling the transmission cannot not increase line pressure. If way overfull (way more than a quart), it can cause fluctuation in line pressure from aeration, and this in turn can burn up the 2-4 band, and or other clutches....
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02-12-2017, 10:51 AM
#8
Over filling a automatic will not burn up a transmission! Running the dog **** out of it will cause the fluid to heat up and vent ,trans fluid expands when its gets hot. thats why the level is different between hot/cold. Did you try to drive it home after it dumped the fluid??? if so thats why it **** the bed.
02-12-2017, 10:56 AM
#9
Yes. after it dumped the fluid I drove it. I stopped at a gas station, idled for a few minutes and went home. After about 1 mile the second gear was breaking away.
I just took it around my circle and the 2nd gear engages but it is weak. Breaks away really easy, but the 3d and 4th shift amazing.
I just took it around my circle and the 2nd gear engages but it is weak. Breaks away really easy, but the 3d and 4th shift amazing.
02-12-2017, 10:58 AM
#10
So I over filled my trans. I was on the highway doing heavy pulls and it started puking fluid out the back. Back of my car was entirely covered. Pulled over after noticing and it blew fluid out of every hole it could find, even back out of the dipstick.
I am guessing that the pressure built up so hard the 2nd gear clutch pack must have been engaged at the time of maximum pressure build up. It started slipping right on out of the gear and the engagement felt very weak. Now it is almost gone and I am pretty sure over filling the trans is what killed it. I am pretty bumped. Just want everyone to know, when you read don't over fill, please do yourself a favor and don't over fill. I killed a great transmission tonight and its all my own damn fault.
(From a post that was merged in here) Mine blew out second gear tonight because it was too full and built up too much pressure.
I am guessing that the pressure built up so hard the 2nd gear clutch pack must have been engaged at the time of maximum pressure build up. It started slipping right on out of the gear and the engagement felt very weak. Now it is almost gone and I am pretty sure over filling the trans is what killed it. I am pretty bumped. Just want everyone to know, when you read don't over fill, please do yourself a favor and don't over fill. I killed a great transmission tonight and its all my own damn fault.
(From a post that was merged in here) Mine blew out second gear tonight because it was too full and built up too much pressure.
Did you have a hi stall converter?
Did you just have the trans built??
Did it ever shift to 4th gear?
02-12-2017, 11:02 AM
#11
no its a goodwrench trans that replaced the original maybe 50k ago?
no it just banged limiter in 3rd. after I went to put in fourth after a pull it wouldn't go until RPM went down.
02-12-2017, 11:06 AM
#13
Yeah, it feels like 2nd gear clutches are about done for. Probably gonna take it out and bring it to a local trans builder. He is highly regarded and so I should get a good upgrade for a good deal cause my dad works with him a lot. Happened at the nicest time of year. Probably more upset about that more than not being able to run it at the track after putting my stall in.
02-12-2017, 06:00 PM
#14
To much to little can have some serious side effects,
To much and you can get it into the rotating assemblies makes like a blender pushing lots of air into the mix which will give a much weaker hydraulic apply and can burn frictions
To little you suck the pan dry or pull in air again this can send the pressures all over the place , cause the pump slide to move erratically even cause a pump failure,
One of the best simple mods to avoid either situation is to install a deep pan the factory truck deep pan is fine and the truck filter , You will have no reason to overfill and are much less likely to ever run low as the filter sets much deeper in the fluid .
To much and you can get it into the rotating assemblies makes like a blender pushing lots of air into the mix which will give a much weaker hydraulic apply and can burn frictions
To little you suck the pan dry or pull in air again this can send the pressures all over the place , cause the pump slide to move erratically even cause a pump failure,
One of the best simple mods to avoid either situation is to install a deep pan the factory truck deep pan is fine and the truck filter , You will have no reason to overfill and are much less likely to ever run low as the filter sets much deeper in the fluid .
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02-12-2017, 06:11 PM
#15
To much to little can have some serious side effects,
To much and you can get it into the rotating assemblies makes like a blender pushing lots of air into the mix which will give a much weaker hydraulic apply and can burn frictions
To little you suck the pan dry or pull in air again this can send the pressures all over the place , cause the pump slide to move erratically even cause a pump failure,
One of the best simple mods to avoid either situation is to install a deep pan the factory truck deep pan is fine and the truck filter , You will have no reason to overfill and are much less likely to ever run low as the filter sets much deeper in the fluid .
To much and you can get it into the rotating assemblies makes like a blender pushing lots of air into the mix which will give a much weaker hydraulic apply and can burn frictions
To little you suck the pan dry or pull in air again this can send the pressures all over the place , cause the pump slide to move erratically even cause a pump failure,
One of the best simple mods to avoid either situation is to install a deep pan the factory truck deep pan is fine and the truck filter , You will have no reason to overfill and are much less likely to ever run low as the filter sets much deeper in the fluid .
