Question about 2001 Hyundai XG300

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Automatic gears behave erratically in Auto but are fine in Triptonic

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Have you changed the trans mission fluid as it gets very light after a year in use

Posted on Jun 02, 2008

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1997 toyota coroola dx automatic 214Kmiles. Gears not shifting correctly until car warms up.


Is this an automatic or manual transmission? When was the last time you changed the filter if it's an automatic? You may have a valve body problem too.

Oct 02, 2016 | 1997 Toyota Corolla

1 Answer

Why won't it engage any forward or reverse gears?


auto or stick trans, we find out its an AUTOmatic.
this trans is most likely a pure hydramatic.
and no TCM tranny brains then.



check levels next. (by the book dont guess)
check the shift cable, for proper movement. in all gears.
"selections, they are no gears" the automatic shifts via clutch packs not gears. like stick does.
move the shift lever and be sure the transmission end of the cable moves 1 for 1 same; that is moves to all transmission shift positions. (at trans itself)
if not the cable is bad or came loose.
inspections are first never transmission swaps, blind (on a whim);
the FSM book covers all this."chapter, on car service" all cars made have this chapter.. an amazing fact.
next, is get a new filter in the trans.
if clogged, the pump can not suck AFT. (shunted input)
so line pressure drops, and it cant shift.
no need to do the stall tests as it fails 100%
next is line pressure, tests. if that fails,
it needs a rebuilt trans.
but dont take my word , read the book.
or ask your tech to do the tests, he knows, how...

Jun 26, 2015 | 1985 Jeep Cherokee

1 Answer

Transmission is erratic


I am not a transmission guy, but I have had problems in the past with the new filter not being seated correctly after servicing causing all kinds of wonky symptoms. Just a thought, but it sounds like the problem started before service "daughter said it was behaving erractically in traffic circles". Its nearing 20 years of service - it might just be on its way out. Tear down and rebuild is expensive - might just trade it in and start fresh. Good luck.

Apr 21, 2014 | 1995 Mazda Protege

2 Answers

Can shift gears not started, but once engine is on can't shift


auto or manual would help, i would say clutch in a manual or damage to auto gear box or torque convertor if automatic. manual is a cheap fix auto may be thousands.

Jan 17, 2013 | 1994 Honda Accord

1 Answer

C93 c1500 starts off in second gear and dont shift to next gears,reverse works fine


Transmission module that shifts the transmission.
Automatic Transmission Control Solenoid Double check with auto parts store.

I hope this helps!

Nov 06, 2012 | Cars & Trucks

1 Answer

1998 passat with p1784 code. What does this mean. triptonic shifting works great but when in the automatic shift mode, it seems to shift erratically.


VW code is true P1784 this is a shift up/shift down. Open wire/short to ground.. Its a shift problem caused by a wire that either opened, disconnected, or has shorted,

May 03, 2011 | 1998 Volkswagen Passat

1 Answer

Auto box not selecting gears


get a replacement automatic transmission or have your unit reconditioned

May 05, 2009 | Mitsubishi Lancer Cars & Trucks

1 Answer

Shifting problem


This sounds like a VSS (vehicle speed sensor) not being read correctly by the computer, or the VSS is inaccurate, erratic, etc. The erratic speedo seems to verify my theory doesn't it???

Jan 25, 2009 | 1994 Honda Accord

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