Question about 1986 Ford Bronco

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Tranny at first the tranny shifted hard through all gears,changed fluid and filter no change, added LUCAS tranny slip n seal started to notice a differance.not even 250 miles later no first i checked the level and its too full did i screw up the tranny.i know its a 14 bolt i thought it a AOD i was told that its a c-4

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Try changing the transmission filter once they get clogged they will act like that.

Posted on Nov 06, 2008

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Shifts from first to second hard and shiftsto third but starts slipping if you baby the gas it goes to drive and slips really bad but it doesnt slip in first or second


Change the transmission fluid, as well as the filter.....but add some Lucas stop slip to the new transmission fluid let it sit for a day the drive it.....3-7 days later you should notice a difference.

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Shifts hard at first (when tranny is cold) then seems to shift fine. Checked tranny fluid level and it was low by a few quarts. Could this have been the problem or am I in danger?


this may have been problem[low on fluid] may be time to change that trannny fluid and filter. if you choose to do this , i recommend that you add lucas tranny treatment to the fluid change also w/new tranny filter. this frees up any sticky valves in your tranny. allows smooth shifting, and works well wlth any fluid for fords/chevy's or jeeps. the lucas will eliminate the hard shifting, been there done that issue. also the hard down shifting you did'nt mention. although you may have not noticed. add the lucas and your hard shifting issues should be gone. thank you for choosing fixya.com

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2004 Montana shifts hard after being driven for about an hour. It has only occurred once, however, other times while sitting at a traffic light, when I press the fuel petal to go, it slips as if...


If the transmission has otherwise being acting OK, then I'd think that fluid and filter might take care of it. A shift solenoid might not be necessary, but it can't hurt. The only thing I differ with you on is your choice of Rislone. They make a great product, no doubt, but I've seen worse problems than you've described made to working smoothly using Lucas Oil.

My wife's Montana (01) has roughly the same miles, and it one time hit hard on a 2 / 3 shift while I was driving it.

I added Lucas (didn't change fluid, filter or anything) and it has worked just fine ever since.

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I just want to know where the transmission filter is on a 2005 Hyundai Elantra and how often the filter and fluid need changing?


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Aug 05, 2010 | 2005 Hyundai Elantra

1 Answer

Wont shift properly


First, check the transmission fluid while engine (tranny) is at operating temperature. If it is full, then have the fluid and filter (will require new gasket) changed. I recommend adding a quart of Lucas Oil (inquire with mechanic or auto parts dealer for details and suggestion for this as well). I add this to ALL my cars without regret.

If changing the fluid and filter (gasket) do not make a difference, I suggest inquiring with a transmission specialist about having the transmission rebuilt or seeing if maybe the torque converter could simply be the problem.

I suggest having the filter and fluid changed first (don't forget the gasket) as this will be a cheaper start and fix; if this is the problem.

Please let me know if you need further assistance.

carsandcomps,

Guru, Premium Expert @ Fixya.com

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If the tranny is slipping try some Lucas Tranny additive use a suction gun to take a quart of tranny fluid out then pour in a quart of Lucas it has save many cars for me and my family.

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This transmission is electronicly shifted by the computer (transmission control module) First thing i'd recomend is changing the trans. fluid & filter ( depending on what engine you have the trans may not have a serviceable filter ) Change the fluid and add 1 bottle of LUCAS trans.treatment = 1 QT.

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Transmission is worn and previous owner has added transmission fluid additives like Lucas transmission oil to try to make it last longer. The fluid is burn and needs to be changed, best thing to do is to have the transmission fluid and filter changed and add some additives to the fluid and try not to drive it to hard.
It shift's hard when your driving at normal speeds because the fluid is thicker then it should and the transmission line pressure is higher due to the thicker fluid. At WOT the transmission slips so it seams smoother and that's why the fluid is burnt.
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