run up your engines okay I got a transmission problem this Kia
check engine light is coming on well I got my scan tool in the dash it says p0741
torque converter clutch problems slipping or off so that's actually a
very common problem these kias as they age on a scan tool I looked at the recorded
data for the trouble code and it showed that it happened at about 56 miles an
hour and what's happening is the torque converter is either slipping or the
lockup is not working right at higher speeds
modern vehicles have automatic transmissions that get about the same
gas mileage as a stand all automatic transmissions have a little slippage in
them so when you come to a stop and you step on the brakes the engine doesn't
stall in a standard transmission if you did it the engine was stalled you have
to push down the clutch put it neutral automatic transmissions don't work that
way they had some slippage but decades ago they started putting these torque
converter lockups in the automatic transmissions so when you're on a
highway speed and this one was 56 miles an hour the solenoid locks it in place
so there's no slippage as off so you get the same gas mileage as you would in a
standard one well the system's starting to break down
needless to say even as twelve-year-old kia it's all computer control there
could be a ton of things wrong but often it's just the fluid I know this
particular vehicle got over a hundred thousand miles of fluids never been
changed so I'm assuming it's dirty first we're gonna check and see if it's low we
started up with the engine in park and we check the fluid reach in here wipe it off
put it back in then check the level this case it's full or it should be but
as you can see it's also pretty dirty it's supposed to be red so we're gonna
take a gamble on this one change the fluid and add some of this Lucas
additive as you can see it's stop slip I've used this stuff for years and
then older transmissions like this I've often gotten lucky and it actually
solved the problem like this that just started out this guy's the original
owner of the vehicle and it's the first time this code has ever tripped
so I'll jack it up in here and crawl under it with a drain pan well forget
this drain pan because as you can see i pair the drain bolt right here
it's right above the frame so it's gonna splatter all over so we need a bigger
pan luckily I got a big one just for that so I can take a lot more fluid from
a bigger area out of the way these are often hard to get to so get a giant
wrench that fits and a big hammer to hit it whacks off take it off probably gonna
make a big mess but that's life off it comes and it goes all over the place just
like I said that's why you need the big pan brilliant design as you can see on a
drain plug its magnetic there's some little black filings on it not really
bad but it shows there's where inside don't watch it's gone draining you put
the drain plug back in in it goes and then tighten it up then since we already
checked it with a gauge and it was full we measure how much is in here and
put the same amount right back in as I said before I can use the Lucas transfix
too instead of one of the quarts I'm gonna put this and drive and see what
happens so pull out the stick
put it in the funnel and pour in all the fluids and of course remember to put the
transmission fluid in too then get rid of the funnel and put the dipstick back in and
don't forget to recycle the transmission fluid then let the jack down and take it for
a good half hour spin don't forget to close the hood now only times gonna tell
if this actually fixes it but for my experience with these kias since it's
the first time it happened the fluid has never been changed I'd say I have at least a
50% chance then it'll stop slipping and tripping that code now if the code keeps
coming back that means it's wearing out inside mechanically and it's gonna cost
a small fortune probably more than the 12 year old vehicle it's worth but this
often fixes them for quite some time so now you know if your check engine light
is coming on it's got of transmission slipping cold you can try to fix it
yourself with the simple change and some additives and a little bit of luck so
if you never want to miss another one of my new car repair videos, remember to
ring that Bell