[Anonymous]

So the check engine light came on. :gaah:



2003 3.8l 131,500 miles


I do not think it's nothing major drove it a few miles , I do not hear any difference in the sound of the engine.

 

[Anonymous]

it just happen last night around mid night.
I going to get it checked out later today

 

[Anonymous]

p0741 code (1 of 1)


P0741 CHEVROLET - Torque Converter Clutch Circuit Performance or Stuck Off
seem to shift okay.. I'll call the Transmission shop since it's under warranty. I hope that warranty was transferable.. :bang:

 

[Anonymous]

Your TC clutch is stuck off? Have you noticed a gas mileage drop? You should. Depending on how often you highway drive and that clutch locks up.

getting about 17-city (speed limits around here are 45 to 65mph)

I don;t drive on the freeway since the city speed limits are all ready freeway speeds
example 55MPH to 65MPH on larger street

But sometimes you can hit all red's, that could eat up a lot of gas.
If I did take it out on the open freeway, I would expect to get around 25 to 27MPG.


not scared of the freeway or anything I taken a car to 90-95mph (keeping up with traffic, beats getting rear ended)on the local freeway in Los Angeles
I watched as a cop passed me up as well!

 

[Anonymous]

My point is the TC clutch locks up at cruising speed to improve gas mileage. Basically both halves spin at the same rate, when the clutch engages, preventing lost kinetic energy through the transmission fluid in the TC.

I'll get it checked out I just got to find the warranty receipt for the transmission since it's under 12mo/12k miles on the rebuilt one it has

it's like 80 miles away

 

[Anonymous]

Light went off should I still get it checked out? very long drive

 

[Anonymous]

Yeah if you got a warranty the code should be stored in the computer as long as you didnt erase it. I would definitely get it checked out. Its cheaper to check now than blow up a torque converter out of warranty

yeah the code got erased accidentally so I'll have to wait for it to come back on

 

[Anonymous]

yeah the transmission feels heavy when pressing the gas I could only barely get it to 2 or 3krpm (if I am lucky)

gas pedal floored


rev's up fine in park.

I can feel a drag

 

[Anonymous]

Get it fixed before you cause more problems.

just got to wait for the light to come on again.

seems to be working now got it into the 4-5k range with ease
I all ready know it's not good to take it into the 6k rpm range as that could damage the engine.

got it to 80mph without much trouble on a local back road.

 

[Anonymous]

I wouldn't wait for the light by then it could be to late and they will be telling you that you should have brought it in sooner so they aren't gonna cover it.

If I trash the transmission Not a big deal since my grandpa said he will help me get a new one or a used one from pick a part with low miles.

In the end I may look for one with low miles since it will be cheaper then replacing the parts if I can not get warranted.


At 1200rpm it seems a little ruff, once passed it, it's fine.

 

[Anonymous]

Why wouldnt you go get your brand new trans fixed instead of getting one from a junk yard.

Better yet why start a thread for help if your not gonna listen to it

it's not brand new it's a Rebuild transmission from a 00 I think that has 88k Probably a leak as well since It was down 1 qt (unless they were to cheap to fill it up)

 

[Anonymous]

4T65E-HD automatic a compatible replacement? for the 3.8l non-ss

 

[Anonymous]

No

thought so.

 

[Anonymous]

came back on. i'll get a code readout later still getting 17mpg

 

[Anonymous]

reporting p0741 same code as before

 

[Anonymous]

How is your transmission fluid level?

full before it thew the codes the two times

the fluid was low before though. (down 1 qt). (not sure if 1qt is a lot for this car)


The thermostat never got much passed the middle (which I assume is normal operating temperature. )

I can take it on the highway tonight what should I be hearing/looking for?
doing some research on it

P0741 - TCC System Stuck Off - 3800Pro.com Forum

The RPMs stay at 3000 RPMS when ever I travel at 60mph or above

it is shifting into 4th.

no other codes have been set with this code

other than the high RPMs shifting is fine.

I assuming I do not have the same issue as that guy. as my seems to run at normal rpms

I have AAA towing just in case.



Should I try it on a up and down hill part or flat part of the freeway? (I do have a choice between the two..)



Please note the light came on when I was fully stopped both times

Fully stopped in drive-thu first time, second time was in left turn lane


rear window defroster was on the first time + Heater 2.
Heater was on 5 second time when the light came on.

 

[Anonymous]

Dealer or a good transmission shop.

Transmissions can be tricky

Light went off by it self..

I think it could be a faulty brake switch. since it did come up when the brake was pressed


idleing at a little bit lower RPM's today 680rpm at a stop light

I putting my money on a faulty brake switch.. only cost $20 so it's worth a try.

cheaper then tearing apart the transmission and nothing is wrong with it.

 

[Anonymous]

Why would you think a break switch would pop a TCC code?

brake switch is a relay for the TCC


brake switch activates the TCC.

I have to do the highway test i'll be going on a trip on the 24th so I can test it then.


highway test would confirm it.

I see that code can be caused by low fluid level but it's full now and it never showed when it was actually low.

 

[Anonymous]

I did the test and it was successful, TCC engaged correctly. (rpm jumped for a second.)

 

[Anonymous]

Just has it checked out and he said it was a train wreak in there...


Found the location were the transmission repair shop was and they said they will fix it.

also found out I had a bad motor mount as well. transmission shop said they will take care of it also.