2003 Sonata 2-3 up shift problem

I had the TSB applied to my Sonata last week. I'm not sure I like the
results. The shift time has decreased dramatically. That is great.
The tranny used to take around a second to shift when above 3500 RPM.
The lagging 2-3 upshift problem has gotten worse. I also seem to have
developed a 3-4 upshift lag. This might be the transmission
relearning but it has been almost 600 miles since the TSB was applied.
My car learned a lot faster after I bought it (and reset the ECM). In
addition, when in Shiftronic mode my car no longer automatically
downshifts at 1000 RPM, it now waits until 700 RPM. It doesn't
downshift from 3rd to 2nd either, it jumps straight down to 1st. This
is a little annoying because there is no power in 3rd gear at 15 mph.

 

I called my dealer and made an appointment. He said he never heard anything
about it. But however he did tell me it's going to cost me 300.00 to correct
the problem. How much did you guys get charged?

 

No charge. I had been complaining of this shift problem since the vehicle
was new and recently informed the dealer I was ready to seek arbitration. I
feel Hyundai should have an automatic recall for all 2002-2003 Sonata to
upgrade transaxle software. I'm sure they will reprogram to keep a happy
customer.
Bob

 

Nothing, they did it under warranty.

 

Don't forget to add the '04 model Sonata's to the list. Bought my '04
in Nov '03. It better be an '04!

 

I'd just like to post up here again to let you guys know that the 2-3
and 3-4 upshift lag has, for the most part, finally gone away. It
only took 1000 miles...

My car still skips 2nd gear on the way down though unless I decelerate
slowly.

 

Transmission shift flare refers to engine RPM shooting up momentarily
with a sensation of the tranny in NEUTRAL. Delayed shifting is
something else. It's normal when the engine is cold.

What is the manufacture date of your car?

 

Try this. Pull the TCM fuse off the fuse panel and put it back after
about a minute.

 

Have a dealer update the TCM.

 

August 16, 2003

 

That falls within the production range specified in the TSB. Have your dealer
update the TCM.

 

Just turned 9000 on my '04 and still no change in shift pattern. I'm
going to have to go back to the dealer again I guess. BTW, my '04 has
a manufacture date of Aug 12, 2003

 

Where is this TCM fuse? I looked, but didn't see one called TCM??

 

Where is this TCM fuse on my '04 Sonata? I've looked, but can't find
one called TCM?

 

My 2oo2 Elantra does the same thing.From new. Software update and all. My
dealer says the same thing. "this is normal". We all know a car shouldn't
work like this, so the BIG question is, what else does Hyundai consider
"normal"

 

I would think these high RPM's can't be good for the engine, so I'm
making sure to get regular oil changes and keep all my records. I
think I'll be getting an engine replacement before my 100,000 miles
are up. I like the car, but sure wish I had selected something other
than a Hyundai

 

DOHC engines are made to rev high (unlike pushrod engines). It's not
taking much, if any, life out of the engine, it's just killing your
gas mileage.

 

That it is doing. I still am unable to over about 17.5 MPG (Except on
the highway, where I can get about 23-25

 

That's pretty bad. Mine is usually between 19-20. If I drive a long
trip on the highway I can get 24-25.

 

Jason,

Is this the V6??

Thanks