i have a 1992 xlt 5.0 auto when it switches gears i feel a sudden jerk or "buck" any ideas on what that is or how to fix it

 

hows the transmission fluid? full, what color, and has it been beat or towed anyting, those both will hurt a transmission, along with a number of things like low vacume and or a bad selenoid, im not sure if they had electric selinoids then or not.

 

tranny fluid looked full and the right color hasnt been towed or beaten that much havent checked the vacuum though

 

it may also just have a dirty filter, has it been changed properly?

 

what type of filter are you talking about tranny filter?

 

yup, theres one in the tranny to, but its more like a screen i belive, but could still be plugged

 

ok how would i go about changing it?

 

Hi DY,
A long time mechanic gave me a hint about ATF - smell it. I just replaced the fluid and filters in my 99 Grand Am and more recently my 92 f150 4x4. Both fluids looked nice and red, but the fluid in my truck actually had a burned smell to it, which is an indication that its time to change the fluid. You should get a haynes manual for your truck but this is what I did:
1-Find out what kind of tranny you have (look at your mfg sticker - E means E4OD 'cause that's what I have).
2-Search the archives for the tranny code and ask the list if its not in the archives
3-Purchase a filter and gasket kit for your tranny - count the # of holes in the filter and line it up underneath (or just look) to make sure you have the right one. Also purchase some RTV gasket maker (black). If you don't have a very long funnel, get one of those too (look at where your filler hole is in the truck to get an idea of what kind to buy
4-Get a HUGE drip pan (or use an old, big kitty litter container like me)
5-spread newspaper aound and put the drip pan under the pan
6-start unscrewing the bolts in the pan so that the fluid will drip out of one end. - wait for it to drip completely (ie have a beer)
7-I then got a wooden paint stirrer (I jack a few of them every time I go to Home depot - large and small) and broke a piece off so that it's just a tad longer than the distance from your garage floor to the bottom of the pan. I then wedged, not too hard, the stick so that it supported the pan up in the truck
8-remove the remaining bolts from the pan. Then hold the pan up with one hand, then move your stick out of the way, pouring the fluid from the pan into your catch container. Be carful not do kink the edge of the pan that contacts the tranny.
9- clean the pan , including the magnet that attracts metal - hope you don't have big metal parts there. Clean both mating surfaces of the pan & tranny with a cloth/rag.
10-this is where I got weird and painted the outside of my pan red for the hellovit - I had a lot of cleaning to do and I probably should have picked any color than red but I had red engine paint and wanted to use it..
11-Remove the old filter. Make sure you have the catch can there 'cause more fluid will come out. When removing the filter, just pull it down and move it side to side (rotate it) and it will come out. Make sure you replace the gasket that seals the filter to the tranny when replacing the filter with your new one. My instructions on the new filter said to lightly coat the new filter gasket (it's about as big as a garden hose gasket) before putting the new filter in - don't worry, it'll stay in place.
12-lightly spread the rtv stuff on the mating surface of the pan, then place the gasket on the pan. Then I put rtv on the top of the gasket where it'll make contact with the tranny.
13-then put the pan back on, being carful not to mis-align the gasket holes - it wasn't hard. With one hand holding the pan to the tranny, hand install 2 bolts at opposite ends of the pan, now your other hand will be free to install the rest of the bolds - my manual said 10ft/lb of torque for the bolts. Don't overtighten !!
14 - I poured the old fluid into a couple of gallon jugs to get an idea of how much to replace...
15- follow the directions in the manual when starting up with the new fluid, ie start up, gently shift gears whilst the truck warms up, then check the fluid while the motor's running and warm..

I hope this helps - I just finished this up in my truck yesterday so it's pretty fresh in my head. I didn't even jack the truck up to do this...good luck - not sure if this will help your jerking but this is how to do it...



For me it's onward and upward to my leaky right hand valve cover gasket, my oil pan gasket, and a newly-discovered suspicious-looking front crank seal...

 

CORRECTION - I errored when I said rtv up there...I'm home now and what I used to seal the gasket was "super 300 form-a-gasket sealant" made by Permatex pretty icky gooy stuff but it seems to work well after drying...

 

i personaly wouldent use a rtv of any type nor a gasket maker, it sqishes out inside and can clog the tranny because it is dyteriorated by oil, just the gasket will hold up fine as long ast the surfaces are clean, and some filters are bolted to the tranny my C-6 (3spd auto) had like 5 or six bolts of diffrent lengths holding it in, just my $.02 worth.

 

I won't argue with you - that's certainly the way to go , since I consider the gasket maker a 'crutch' or insurance- however if you don't put too much on per the instructions and let it dry it should be ok...

 

yes, but the best stuff i have found is "YAMABOND" or the stuff that permatex makes thats, in a blue tube, and is a purpleish color, and is like 9 or 10 bucks, i dont know if thats what your reffering to, those are sutable but never rtv if it contacs gas or oil.

 

I've heard good things about that Yamabond stuff and I agree about your rtv comment (see my correction)