feels like transmission is slipping
 

i had my transmission fluid changed [it was about 40,000 miles over due] and about one week later i started haveing some troubles. i would drive and it feels like the tranny's slipping or something misfiring. It dosent just happen when its about to change gears it happens a lot on some days. some days it wont happen at all. it feels like it losses its power like the engines about to crap out. if im at the same rpm it will keep doing it untill i push the gas or let off the gas and then push again. ive thought of the possiblities of a bad fuel pump [but dont they just give out with not mush notice] or a messed up tranny about to go out, or water in my fuel tank but i just dont know.

RE: feels like transmission is slipping
 

PLEASE tell me they did NOT flush it !

what was done?
new filter?
remove pan?
drain fluid?
flush?
type fluid used?

check fluid level with engine running, trani in neutral,
car on level ground after running car ON STREET for 15 minutes.
warming engine in driveway does NOT count...

how many miles does the trani has? 140,000 ? 1st fluid change?

we go from there

RE: feels like transmission is slipping
 

They told mea new filter was put on, so they had to drop the pan to get to it [i assume]. they took out the old fluid and put in new. I dont know what type of fluid they used, but i did take it to a cadillac repair shop that ive taken to all my life. the guy really knows hes cadillacs so i hope he knew the right type of fluid he put in. i checked the level of the fluid the day of and after and about every other day after that and the fluid is at the right level. The tranni is the orginal one in my car and it has 260,000 miles on it. I know that sounds like a lot but about half is highway miles and it never gave me trouble untill i decided to have the fluid changed. Its been giving me the trouble for about 1 month.

RE: feels like transmission is slipping
 

i think ive found my transmission problem. I discovered it is my torque converter. When it lockes up it feels like it shifting. Does anyone have any tips on an easy unistall and install of the torque converter? And what would happen if i let it go all they way out?

RE: feels like transmission is slipping
 

I think we all may have the same problem. It may be the TCC. I posted on this for help confirming if this could result in the problem.

Kyle

RE: feels like transmission is slipping
 

i wish i could answer your question.
however, may i suggest you PM both these techs? let them know about your posting?

katzmans cad and flcaddytech

these guys come here when their jobs and time allow them.
flcaddytech is a dealer master tech.

we do like the answers to be posted for others to benefit.
the PM's are linked to their personal emails.

BTW, everyone here is pretty easy going.
welcome here to our little site..

RE: feels like transmission is slipping
 

Good news guys. The problem was the TCC. ITs an easy fix. After doing some research this is a typical problem with older trannys. Basically it feels like your Torque Converter is shot but in reality its the Torque Converter Clutch Solenoid. For those who are having problems with their trannys and you have electronics on it, disconnect the wirning harness that goes into your tranny. If the problem goes away than you have a bad TCC. However DONT think ok I'll just drive around without it plugged in. Apparently your asking for troubles down the road if you do. Does anyone know why thiswould create a problem? Why wouldn't disconnecting the harness render your transmission to operate like a pre-electronic tranny?

Kyle

RE: feels like transmission is slipping
 

That advise only works on certain early model electronic trannys.
Try unplugging your trans connector on a car made in the last 10yrs and you'd be lucky to get more than 1 gear out of it.

If you guys have any specific questions fire away with as much info and detail as possible.

This thread was too vague for me to offer any quality advice.

RE: feels like transmission is slipping
 

If the only electronics in a trans is the lock up, then unplugging it should be fine.
But modern transmissions use electronicsensors and solenoids that have replaced governors and throttle valves. Unplugging them renders that function of the trans inoperable.

RE: feels like transmission is slipping-FLCaddyTech
 

FLCaddyTech,

Glad to hear from you. Yes it is an old school 200-4R tranny in my 1984 Cadillac DeVille. That being said it looks like your the right man to talk to. In your professional opinion would you say that my tranny essentially is operating like a pre-electronics tranny now? And if so what could be the consequences if any by driving with it unplugged. Like I said once I disconnected it the tranny shifted GREAT. I hope to hear from you soon regarding any disadvantages or consequences of doing this.

Kyle:D

RE: feels like transmission is slipping-FLCaddyTech
 

It's been many moons since i tinkered with the 200.
IIRC the plug for that trans has 4 wires.
2 for the TCC and 2 for the reverse lights.

Disabling the TCC should have no long term disadvantage other than the engine running at a slightly higher rpm when cruising. And that's only if it was working properly to begin with.

If it was mine i would do the same things you have done.

RE: feels like transmission is slipping-FLCaddyTech
 

it sounds like everybody is talking about unpluging the TCC, what about replacing it? is that something that can be done? I don't know yet if that is my problem, but would driving without it be like driving in 3rd? My service soon light came on yesterday, I am going to check the code tonight, I think the TCC will give a error code, I don't know if that is the problem or not?

RE: feels like transmission is slipping-FLCaddyTech
 

i have an 02 sts it has a code 0741 what is the cost of getting this fixed? eothrash@yahoo.com thanks

P0741 P1860 TCC PWM solenoid
 

i brought your duplicate post from elsewhere .. please no posting the same question in a several threads.
it drives some of us nuts. Stick to one thread, from start to finish ...

P1860 is a circuit issue, it is set by a P0741. You can check the Soleniod from the 20 way connector.
it is said that the connector to the solenoid is often the problem.

P0741 - TCC System Stuck Off
P1860 - TCC PWM Solenoid Circuit Electrical

The solenoid can be replaced without dropping the trans but you got to lower the cradle some.
A Caddy dealer, will still charge you for dropping the trans even if they dont.

job by dropping the trani? count on $1,500
w/o dropping the trani? maybe half of that ..
shadetree mechanics do it with car on jacks.
solenoid part? i say between $50 to $100 .. i didnt check the cost.

until you fix it, you are adviced to drive it in 3rd gear and avoid wear and tear on the clutches.
for the most part, it shouldnt hurt the car, unless yo drive at 100mph.












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RE: P0741 P1860 TCC PWM solenoid
 

Thank you so much for all of the information on this post. My Caddy recently popped up with the P0741 and P1860 errors. Took it to the dealership before finding this board. My issues all started while driving on the highway and it felt like the car was bucking. However after calling OnStar, they told me that sometimes this condition "resets" itself, and sure enough after leaving the car parked for an hour or two, the bucking completely stopped and it never happened again. Since the SES light was on, and I was missing a headlight, I took it to my dealership and asked them to reset the SES. I was horrified when they told me I was havinga transimssion problem and might have to have the whole thing replaced. I had just put 3K worth of preventative maintenance into it (and there was some fallout from that visit which I wish did not occur) and was hoping not to have another huge repair.

Fast forward to this weekend, I accidentally left my blackberry plugged into lighter charging while the car was parked for an hour and 1/2 and it drained most of the power from the battery. Car started fine when I left the hockey rink and drove about eight miles, however when I stopped to get gasand shut the car off,the car was completely dead when I tried to turn it back on. OnStar came and jumped me, and since my battery was original from 2002 they suggested I replace it.While I was driving to get a new battery, all hell broke loose, and the car seemed to be not getting enough gas when I tried to start from standstill or accelerate, and it was "sputtering" a bit and I was afraid it would stop moving!

I took it to my local mechanic and what he found was a battery that was collapsing from the outside in (said it was somewhat unusual), and he found a fried alternator. He replaced both, reset the SES and I picked the car up tonight.($226 dollars was much more palatable than the $3200 mydealer wasestimating for the transmission)The SES light was off for about 3 miles and then it jumped back on again. The car was not bucking at all, it was riding very smoothly. Called OnStar and the only error I received was the P1860. The otherP0741 issue is not showing up yet.

After reading all that I have it really does sound like either the solenoid is bad, or the wiring went bad based on the battery and starter problems I was having. Perhaps the short or wiring issues came from bad power.

This was long-winded I just wanted to say thank you, because before reading this forum I was panicking and making an appointment to have my entire transmission replaced. Now I will take the printed thread I found here to my local mechanic and see if he can replace the solenoid first.

Thank you again so much. - Anne