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99 Ford Taurus 3.0
tranny fluid flushed every 35k-40k milesSo besides my no heat from inside the cab, im having a totally different problem now. my wife drove to the store (car drove fine) after shopping she tried to put it in reverse and it did nothing, said it seemed like she was in neutral. she had someone push her out of the parking space then she put it in drive. she drove about a mile and the car was starting to buck like crazy so she pulled off to the side of the road and called me. I started the car and the car started to buck like she said, but the odd part it bucks in park also. I rented a car dolly and towed it home, and put the code reader on it just to see if it popped any codes, nothing, any ideas?
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Sounds like there are some major transmission problems. I bet some of your hard parts are broken and jamming up, causing “Bucking”. If you feel froggy you could drop the pan and see if there are metal shavings or anything else that would indicate big problems.
Something i did not want to hear but i kinda had that in the back of my mind that it was the transmission. i already called a few junk yards and priced a few out, all was around the $300-$400 range with a 6-12 month warranty, ill drop the pan tomorrow when i have my brothers over to help me. ill be back
Just make sure you check the fluid in those transmissions for a burnt smell and any black bits in the fluid. Those are bad things :P. Trannys aren’t fun or cheep, but $400 isnt bad. Mine was $1500.
yeah, kinda sucks i baby’ed that car for the last 13 years and the transmission mite be out. guess shit happens. i was expecting it to be around $1,000, guess i got lucky.
I dont understand how it can buck in park,, either there is a problem at the shift cable or valve, or it is an engine problem, a miss can be mistaken for trans trouble
At 1st it only bucked in gear, if you put it in natural it was fine purred like a kitten, it did not do it in park at 1st also, it started after she drove it for about a mile. i think thats why we think its the transmission, could be wrong all together.
Pick the drive wheels up off the ground with a jack and start the car in park. If its a motor problem, the wheels wont move, if its a transmission problem, you will probably see the wheels twitching or moving.
so, i raised it in the air put it in drive, nothing manually switched gears 1-2-3-D-R still nothing. no bucking neither
No movement in either wheel? One side could move without the other moving. Did you visually check both wheels for (abnormal) movement?
Well, I would start a really thorough diagnostic procedure. I would start with OEM plugs and wires to start. Before you put the new plugs and wires in, I would take all of your old plugs out and inspect them. Do all of them look about the same? Any that dont could indicate a problem with that cylinder, and you should check the fuel injector and compression of that cylinder. You can also spray the wires with water and see if you get any arcing. You should check your fuel pressure and make sure that’s good. Check the transmission fluid, it should be reddish, not smell super burnt (if you need a comparison, dip your finger in some new fluid) and it should not have black chunks in it. Basically to sum it up, we are looking at 4 possible causes, and you need to verify the working condition of each one of these systems:
– Ignition: Are all cylinders getting good, consistent spark?
– Fuel Delivery: Are you getting good pressure and are all injectors firing?
– Mechanical: Does the cylinder have compression?
– Transmission: Is there an internal transmission problem?Because the transmission is the hardest to diagnose, I would start with the other three.
ahh, now i reread the whole thing, easy test to narrow it down. there is a cover under for the flex plate. could be a broken flexplate. it has the teeth on the outside under the short plastic cover, 3 bolts with 10 mm heads i think. if the plate moves easy and doesnt turn the engine with it then its a broken plate. if not then just get a trans from the scrap yard.
the way i now understand the question, it was good and bucked and came to a stop with the engine running, now the engine runs and it does not move, wheels are in park locked but move in neutral which is normal, lends to trans being ok but no guarentee
let me now if i got that wrong, it is hard enough to diagnose over the phone, let alone more difficult over typing[quote=”snshd” post=48821]ahh, now i reread the whole thing, easy test to narrow it down. there is a cover under for the flex plate. could be a broken flexplate. it has the teeth on the outside under the short plastic cover, 3 bolts with 10 mm heads i think. if the plate moves easy and doesnt turn the engine with it then its a broken plate. if not then just get a trans from the scrap yard.
the way i now understand the question, it was good and bucked and came to a stop with the engine running, now the engine runs and it does not move, wheels are in park locked but move in neutral which is normal, lends to trans being ok but no guarentee
let me now if i got that wrong, it is hard enough to diagnose over the phone, let alone more difficult over typing[/quote]
Right on the moneyOhhhhh!!!! Makes sense now! HA! +1 for checking the flex plate. If you can see that power is going into the transmission from the motor, but not coming out, I would suspect the differential unit inside the transmission, or the actually transmission (aka you need a new tranny).
If it was the flex plate I’d think you’d be hearing some sort of noise while the engine is running. Reading through it does sound like it could be an internal failure of the transmission. It could also be an electrical issue. Normally in situations like this you would check the pressures in the transmission with oil pressure gauges to see if the transmission is functioning properly.
You could check the bolts on the flex plate for the heck of it but I suggest you take it to a transmission specialist to have it diagnosed. You don’t have to have them fix it but at least you’ll know for sure if the transmission has indeed failed and needs to be replaced.
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