Torque converter Car shakes and surges between 2nd and 3rd gear. Honda said the snap shot indicated a defective torque converter. Honda extended warranty (Honda Care) approved replacing trans and torque converter. One day later Honda dealer said the extended warranty dept (Honda Care) changed their minds and said the torque converter only. Car has 91k miles. Will the defective torque converter have damage the transmission and should the trans be replaced at the same time?

If car doesnt run smooth at idle then othr igntion parts r bad. Othrwise its the trans or torque converter. Chec fluid cond or hav it testdrivn

D4 is where you want to spend most of your time as this is the overdrive gear. About the only time you will need to run in D3 is if you are climbing steep grades or, if equipped with a tow kit, pulling a load.

P0507 Higher idle speed than expected partially stuck open thermostat engine running colder than normal raises idle speed. Small vacuum leak raises idle speed. sticking throttle cable holding throttle plate open.
P0741 Torque Converter Clutch system stuck off : Code conditions : No engine or transaxle system codes set, engine run time over 5 seconds , Throttle Fluid pressure switch not indicating Park/Neutral,TCC commanded On @ max duty cycle, throttle angle over 8% Trans fluid Temp input 68-248f Degrees not in fuel cut off, trans gear ratio indicates 2nd, 3rd, 4th gear delivered torque 32-150 ft lbs, the PCM detected a TCC slip value that was over the torque limits . most likely cause is bad tcc solenoid or torque converter itself. Trans shop can diagnose and repair

Change the filter and fluid. This car if the transmission is original should have a torque converter drain. Drain the torque converter also,it gets almost all the fluid out of the transmission. Doing this the car will require almost 12 quarts of fluid. Worth a shot. I change mine at 25000 mile intervals.

Sounds like your transmission is in limp mode. This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

The other from what you described, trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Thank you for using fixya and have your Safari scanned for the DTC codes that would indicate what issues your transmission is having to put you in to limp mode.

This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmission is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the under hood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.

No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

They have a recall update on torque converter shutter, if update has been installed or problem still exist then the torque converter needs replaced

i had the same problem, its the torque converter. I took my 05 c/a in because i was having shifting problem, the long and short of it is there is a breather on the tranmission that sucks in water from the road. the water and the atf dont mix. the dealer put in a torque converter and changed the fluid and installed a redesigned transmission breather.

You don't have torque converter shudder. You don't even mention that in your original post! You def had a solenoid issue. My 94 STS did the same thing. I only had reverse, 1st and 2nd gear. Wouldn't shift outa 2nd period. It was a $200 solenoid repair. Car had a 160K on it when that happened. I have almost 170k on it now. Shifts and works fine. you don't need the tranny replaces ad josavv63 indicates.

700= Transmission Control System
740= Torque converter clutch circuit