haha ya, sorry.

 

ok...your driving down the road...normally..lol.

1st...2nd...3rd...4th...and what kind of feels like 5th...well, thats the torque converter locking up. when you hit the highway and thruck gets comfortable in 4th gear, the torque converter will lock up dropping your RPMs and saving you gas.

 

you know that tow/haul switch you see? thats basically a lockup switch. it turns the lockup off so that you dont lose torque when towing...hence, bringing down the MPGs...lol.

 

tow/haul.......you mean the OD button?

 

ahh, thats what i alway though was double od

 

tomAto tomato potAto potato

torque lockup is what is happening.

1, 2, 3, 4, lockup

if you ever purchase an aftermarket converter, you will have the choice of lockup or non lockup.

 

i to save gas, go with lockup? but what causes it to lock up? is it an electromagnet? like an a/c clutch

 

it is electric. however, not like the a/c clutch.

ok, in a manual transmission when in neutral...tach it up...it doesnt move...right?
put it in gear and it moves. easy enough.

in an automatic transmission the torque converter allows the motor and driveline to slip...when in drive at idle...usually doesnt move much if at all...right? because the converter is slipping (like its suppose to). in every gear the converter slips a little. this is why manual transmissions (when driven responsibly) get better fuel economy than automatics. this also produces heat...massive amounts of heat at high rpms. so...lockup allows the motor and driveline to be physically bound together...no slippage. this reduces tranny heat and makes the motor more effcient. when you floor it...like to pass...the converter disengages and allows the motor to rev up and then transfers that torque to the wheels respectively.

does this make any sense?? lol

 

If the torque converter clutch is bad one of three things will usually happen. First, the vehicle will tend to rev up and down as it engages and disengages, not being able to keep the converter clutch locked up. Second, the converter clutch will engage randomly in gears that it shouldn't even engage in usually. Third the clutch doesn't want to disengage. As you slow down the vehicle won't downshift and if you try to accelerate the RPM's will be so low that the vehicle will have difficulty moving quickly. In extreme cases the lockup converter will try to keep the vehicle moving as you try to stop at a stop light, or will stall out and die.

Many people think that this problem is coming from their engine because it causes the car to stall. The check engine light will not always show an error for the TCC. Most lockup converters are controlled by a wire or wires that plug into the transmission. It is possible on some models to simply disconnect this plug. This is not a problem and will only cause you to lose a little gas mileage. The RPM's will run slightly higher than before but will not harm anything or be an issue.

 

no, the tc and od are not the same