Transmission Problems. Please help. *FIXED!* - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-01-2007, 04:52 PM   #21
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All sounds good, 7quarts is about what I added, but you want to go with what the dipstick says, and start with 5qts. Be sure to clean everything real good. And drive w/ trans tune for 50mi. Not sure how important it may actually be, but at least get the engine up to temp and open her up once.

A new modulator will work no matter the adjustment, but there should be instructions, I just set mine to the firmest setting on the entire list. Then tuned it to my liking. If your motor mounts are bad, firming up the shifts makes driving horrible... I softened mine up and it'* not so bad. It'* mainly personal preference, but the firmer the better essentially.

EDIT: on those bolts, I kept the ones that were on there, i'm not sure what kind of washers they were, or if there were any. But as long as you torque it in sequence [outward spiral], you won't have any leaks. And no silicone! NONE! Clean it up perfect and it'll seal.
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Old 01-02-2007, 03:07 AM   #22
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how do you go about asjusting them? do the instructions cover the whole dang thing? becuase i was looking in my FSM and could find nothing about it. also, I don't mind the firm shifts and my motor/trans mounts are good, very minimal movement. but i'm not sure i want SUPER tight shifts, just something bareable

and with the trans tune, does it have to be 50 miles? because the company says a minimum of 5 is ok, but im sure 50 wouldn't hurt. will do then.
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Old 01-02-2007, 10:00 PM   #23
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Ok, just got back from advance. I got the trans fluid, lucas trans fix, Modulator valve, and the filter kit with RUBBER gasket. I did not get a torque wrench because they don't have them for any cheaper than $35 and I am heading towards flat broke right now. So we'll see.

UMM, yeah.

ALSO, in the modulator valve dealybop, for some reason, the only instructions that is has is just how it should be placed on there, nothing really about adjusting it...and it really doesn't look adjustable. HELP!
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Old 01-03-2007, 02:08 AM   #24
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All the adjustable ones I have ever seen have a tiny flat blade screwdriver head inside the vacuum nipple. Before you put it on, shine a flashlight into where the vacuum line goes on and you should see the screw head. I always adjust them in small increments and road test to check for feel.
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Old 01-03-2007, 05:10 AM   #25
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am i going clockwise or counter?

ok, i looked in both ends...theres nothing like that. its just a hole.
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Old 01-03-2007, 11:44 AM   #26
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ok, I'm leaving right now for advance, and then checker. apparently i ordered the wrong part....i need a stoplight switch WITH cruise, so umm, yeah, i have to go to checker for that, and umm i need to get a torque wrench, and they have THAT there...

today i am doing the change...
i put in the trans flush yesterday. and now i am gonna be driving about 90 miles so umm, i think it will clean out whatever is in there....

we'll see how it goes..but i am still questioning if that transmission modulator is worth the 20 bucks i paid for it. I really do need to know so i should return it or not when im out, anyone who thinks i should return it and have a good reason, give me a call, i need to save as much money as i can. you can get my number off the contact page on the photo catalog website.
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Old 01-04-2007, 12:29 AM   #27
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YES! YES!

I did it.

I'm broke, but i did it

I put in the seafoam trans tune, drove it for 100 miles... going through the gears maybe 30 times.

got home, dropped the pan, drained the fluid, reinstalled the pan and filled with 6 quarts of fluid. the cork gasket was aboslutely mutilated. it was falling apart, bit by bit.

i then took it for a 15 minute drive, say about 10 miles. I had to keep it short because i was leaking transmission fluid BADLY from the crappy old nasty gasket.

got home, dropped the pan, this time much slower because the fluid was INSANELY hot. so then drained the fluid and wiped up any crud that was in my immidiate sight. I then tried to get my trans filter out. to say that it didn't want to go anywhere would be an understatement. THAT THING WAS IN THERE. But i did suceed in getting it out without breaking anything, so that was good.

so then i went inside and cleaned the pan absolutely spotless. i coulda served food in it.

I would have taken pictures of all of this, but my camera is out of service for the time being.

there was nothing bad in the pan AT ALL. The fluid darkened ALOT after i ran that trans tune for 100 miles. I cleaned the magnet the first time i dropped the pan, and then the SECOND time, after only maybe 15 mins drive, it was FULL again.

but absolutely NO metal anything in there. none. at all, nothing shimmering. my god with the stuff i have done to my differential, im surprized the whole THING isn't sitting in there.

anyways. so i then put vaseline on the filter neck and it plopped right in. snug as a bug in a rug. and then came installation. the gasket was being a small PITA, but i put some vaseline on it to hold it down to the pan and then it worked. i torqued all the bolts to 13 ft/lbs and got out from under the car AGAIN.

now came time to fill. so I put in 5 quarts of fluid and 1 qt of lucas. it wouldn't take any more than that, so now i have 3 unused bottles of trans fluid.

this is absolutely amazing. at first it felt uneasy...
barely shifting into gear...and then it did...softly. VERY softly. and so i said ok, haha, lets take'er out on ze road. easy at first, but after about five minutes of driving, came to a stopsign and did wot. WOW. that thing shifts NICE. i mean, i'm not even sure if NICE covers it. it feels new. so then i did about a 25 mile drive and throughout the whole drive, not ONE hiccup...no slipping....it feels amazing.

final comments?

I have transmission fluid in my hair..and not just a little bit, my fingers are callused from undoing and redoing bolts....i hurt, i have a kink in my neck, my arms from the shoulder down are KILLING ME, im tired, i smell like a grease monkey, i just had to clean my garage..., to say the least, i made a mess. mostly because the first time, when the gasket was bad, i let it sit there and idle...leaking fluid at me.

oh, and i found my cooling system leak. its a radiator hose, but theres nothing i can do about it right now, im flat broke. but at least i know my LIM gaskets aren't bad.

OSG, thanks for calling and putting up with me going on and on and ON and on. I do that. appreciate the info. I'll be returning the modulator, because the trans feels perfect now. OH and i had a look at my mounts close up and they look VERY good. so we'll see on those lol.

so yeah. thats whats going on, I'm gonna go take a shower and pass out. thanks for all the help guys...
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Old 01-04-2007, 01:45 AM   #28
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nice work, this inspires me to do this to my tranny.


Quote:
Originally Posted by wjcollier07
i smell like a grease monkey...
thats not always so bad
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Old 01-04-2007, 08:11 AM   #29
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WJ, Good work...

But I want to make it absolutely clear... These older THM440-T4'*( 4T60 ) are very hard on Trans fluid, thats even with a cooler.... Change the fluid again in a few months and after that do it at least once a year... When the fluid gets oxidised the trans will develop nasty shifts and become irratable... Mine needs a change now too, and even with the cooler the fluid is changing color... The 440-T4 develops a lot of heat, more so than the 4T60-E..

Good Job Tho.... Keep the trans maintained and it should stay happy..

The pan wasn't full of Powder was it?

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Old 01-04-2007, 08:15 AM   #30
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Good to hear.

Calluses from the bolts...lol...that'* a good un.
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