I need to ask someone smarter than myself; why do some of the 700R4's leak out on the floor after sitting a few days when the oil level is at the proper level when in operation?
I don't know if it is the same reason as your 700R4,but my Ford C4 leaks down because it has a bad seal.The seal is hard and if it sits a while,it leaks.If you drive it everyday it does not.
Have the same problem, think mine may be the speeddo insert into the 700r4 but dont know. Pulled the insert and there is no seal on the shaft. it was part of the speedo package, at the daughters for turkey day and this 70 year old mind can't remember what brand they are. Still know what to do after nidnight though
Where's it leaking from? Maybe the manual shift shaft seal or such opening? IF the conv. hub/front pump seal is a bit hard/worn AND the bushing behind it also worn/loose, then the conv. will 'drain down' when sitting because air will pull into the seal upper surface & enter the conv. like taking your finger off a drinking straw full of water. Conv. then can drain down, raising the trans. oil level to leak out other places OR maybe out the very same seal. Been happening since the first automatics. Repl. the front seal AND conv. hub bushing, it'll stop.
Actually, it's a new converter and only 2500 miles on the whole ******. I'll rechech my dipsick seal.
Did you use any shims or washers when you bolted up your torque convertor? Your convertor shouldnt pull out but more than about 1/4 of an inch. If it pulled out to far you could wear out the pump shaft. If its shimmed to much it could damage the seal and case.
Hmmmmm. I've never used shims and didn't know that was an issue. Anyone else ever used converter shims? Do you use an washers as shims?
I never did in the past myself. But when i got my turbo 350 rebuilt i was schooled by Ed Case. The ****** guy. He showed me some of the "problems" improper shimming causes.
If the dipstick tube seal isn't doing its job or its loose, when the car sits, some of the ATF in the converter drains back into the pan raising the level. If the dipstick seal isn't sealed tight, the ATF creeps out around the seal and tube and on the garage floor.... Steve in NJ
in the late 90s had a lot of trouble with new chev trucks leaking atf found the slip yoke had hole in the end of them ( in behind the u joint) just a thought
I recently had an issue withmine leaking at the speedo gear adapter and this was on a 2500 mile (new)trans. Turns out the shop that rebuilt it used a billet aftermarket adapter. We put a new oem one in an presto, no leaks. Check where the speedo cable goes into the rtrans and also the dipstick.
Check the electrical connector on driver's side center above pan. You have to drain the pan and release the retainer clips from the inside to replace the HARD o-ring that is a common leak point. (Comes out after sitting a while, runs down and drips from FRONT of pan)
These are all good suggestions, and I have checked and repaired them all in a street rod that I delt with in the past. Same senario, new trans bla bla...it is the converter/input seal...I know it is not what you want to hear, but my money says that is it. They nicked it when they put the converter in...
I think you and Don Moyer have hit the nail on the head. First, the dipstick seal... It's the easiest, OK?
you might want to check your tv cable i had that problem on mine it would only leak after sitting for a few days, the housing on the tv cable where if bolted to the trans was cracked just an idea
Wow good info I am installing one in my 53 chevy did not know this was an issue. I will be sure to keep an eye out.
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