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Transmission not shifting?

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a transmission professional check for codes and check fluid condition including level as it has no dipstick so has to be put on hoist.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
JOSE M. DIAZ CINTRON
  • MEMBER
  • 2 POSTS
Thanks, the oil level is fine. I believe the problem is one of the sensor. I will like to see a diagram of this sensors.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
They are on sides of trans and some inside trans see pic
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
CAPTAIN03
  • MEMBER
  • 1 POST
  • 2001 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 111,900 MILES
When upshifting the motor increases a few hundred rpm while shifting. The transmission doesn't seem to slip and if you increase throttle pressure it down shifts ok. Is it normal for the slight increase in rpm's while upshifting?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
NEWSVIEW
  • MEMBER
  • 7 POSTS
This was a classic problem with the automatic tranny Elantras in 2001. So much so that there were a number of TSBs issued on the matter. The car's computer should have been flashed to correct the issue, but you may have to take it to a dealer to confirm that the update(s) were applied. If you are not the original owner, it is possible that the prior owner just ignored the problem and never thought to inquire with the dealer (the fix would have been free and still should be). You might wish to log on to the HMAservice. Com website that Hyundai maintains to see this and other bulletins that apply to this model year. There are other websites that offer TSB info, but some of them charge a fee.

If the updates have been applied and you are getting the issue anyhow, perhaps it is time for a transmission fluid flush (hard or delayed shifts may be a symptom of low or dirty fluid). Keep in mind that the fluid used in this tranny isn't stocked by many shops and isn't interchangeable with most of what is sold at the automotive retail shops. I had to special order mine from Hyundai when I had my '01 Elantra's transmission flushed. If you rule out all of the above, it is possible the transmission has been damaged by use of incorrect fluid and/or normal wear and tear.

Good luck!
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
DRIZZT1105
  • MEMBER
  • 2 POSTS
  • 2001 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I have a 2001 Hyundai Elantra with 140,000 miles. Twice in the past week, while I have been driving the car has lurched and at the same time the "check engine" light comes on. The car then will not shift gears, up or down, but will still accelerate at high rpms. After the first incident I had my transmission flushed. What could be the problem?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check engine light being On-means the computer has identified a problem within the engine management system-Take it to autozone and have them read the OBD2 code/s from the computer, then comeback with it this is where we start.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
DRIZZT1105
  • MEMBER
  • 2 POSTS
Autozone wouldn't do a diagnostic on the computer because the check engine light was not on. The light only comes on when the transmission slips, then goes off when I shut off the car and let it set for a few minutes. There is a local Hyundai dealership and I think I should get them to diagnose the problem. What do you think?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I strongly recommend you do that its their vehicle to begin with plus they are equipped with the tools and testing equipment.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
BRIGHTDOME11
  • MEMBER
  • 1 POST
  • 2001 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 117,000 MILES
While driving at normal city speeds (25 to 45 mph)the engine will rev and the transmission seems to clunk rather ubruptly to a lower gear. At that time the Check Engine light also comes on. When I come to a stop and then accelerate the transmission seems to slip and not shift correctly. After shutting down for about 1/2 hour the car drives fine again until the same thing happens.I haven't had any previous transmission or engine problems and I keep up the maintenance. Does this sound like an expensive fix?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Hi
This sounds like major trans prob. I would have the car scanned the code will help determine if you have a transmission problem or a engine prob.

Transmission is pretty expensive prices will vary from one shop to the next. Rebuilt prob around 1400-2000
used 400 600 plus labor.

So these are the expenses you could be looking at.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
MATTSTERCRAFT
  • MEMBER
  • 10 POSTS
  • 1997 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
My car is idling very fast and seemingly is not shifting at higher speeds. This started shortly after I replaced the igniton wires. (I had one bad one) I dont know if this is related but at about the same time the shifter lever started acting up. I cant put it in gear without using the override button. When I push the button on my shifter I can hear/feel it "click" in the steering colum.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hello. Thanks for the donation. Much appreciated

SHIFT LOCK SYSTEM
The shift lock system prevents gearshift lever from being moved from Park unless brake pedal is depressed, ignition is on and release button on side of gearshift lever is depressed. The shift lock system consists of shift and key lock control module, shift lock solenoid, park position switch and brakelight switch. See COMPONENT LOCATIONS. The shift and key lock control module controls operation of shift lock solenoid for gearshift lever operation. In case of a malfunction, gearshift lever can be released by depressing release button.
KEY LOCK SYSTEM
The key lock system prevents ignition key from being turned to LOCK position unless gearshift lever is in Park. Key lock system consists of shift and key lock control module, key lock solenoid and key lock switch. See COMPONENT LOCATIONS. The shift and key lock control module controls operation of key lock solenoid.

SHIFT LOCK SYSTEM
To check system operation, turn ignition on. Depress release button on side of gearshift lever.
With brake pedal released, gearshift lever should not move from Park. Depress brake pedal. With release button depressed, gearshift lever should now move from Park.
If shift lock system operation is not as specified, check brakelight switch and shift lock solenoid. See BRAKELIGHT SWITCH and SHIFT LOCK SOLENOID under COMPONENT TESTS. If necessary, check wiring and ground connections.
BRAKELIGHT SWITCH
Disconnect brakelight switch connector. Using DVOM, check for continuity between brakelight switch terminals with brake pedal depressed. Continuity should be present. Release brake pedal. Continuity should not be present. If continuity is as specified, brakelight switch is okay. If continuity is not as specified, go to next step.
Ensure brake pedal is properly adjusted so brakelight switch can obtain proper travel for switch operation. See BRAKELIGHT SWITCH under ADJUSTMENTS. If adjustment is okay, replace brakelight switch.

SHIFT LOCK SOLENOID
Disconnect shift lock solenoid connector. Using DVOM, measure resistance between shift lock solenoid terminals. Replace shift lock solenoid if resistance is not 12-16 ohms.
To check shift lock solenoid operation, connect battery voltage across shift lock solenoid terminals. When battery voltage is applied, a "clicking" sound should be heard to indicate solenoid operation. Replace shift lock solenoid if operation is not as specified.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
MATTSTERCRAFT
  • MEMBER
  • 10 POSTS
OK but what about the fast idle after replacing the ignition wires and the shifting problem? Are you saying my solenoid problem is somehow related to that?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Check the TPS (throttle position sensor) is not binding/sticking. This could cause high idle and incorrect gear shift's
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
MATTSTERCRAFT
  • MEMBER
  • 10 POSTS
And where would that be and how do I check/test it?
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hey, sorrynot replied sooner .. work commitment's !

The tps is located on throttle body .. check the wiring is good .. remove it from throttle body and check it is not binding up/sticking .. clean it or replace it if necassary ! (#8 in picture)


https://www.2carpros.com/forum/automotive_pictures/266999_hyu_1.jpg

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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
KYLETALIAFERRO
  • MEMBER
  • 4 POSTS
  • 2004 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 110,000 MILES
I have a 04 Hyundai Elantra with 110000 miles on it. When I first start driving the car the transmission won't shift out of first gear and the check engine light comes on. I have found out that when this happens I can immediately turn the car off and turn it back on and the transmission will shift properly. Do you know what the problem is and if I will need to have the transmision replaced
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi kyletaliaferro,

Thank you for the donation.

When the CEL indicates, it indicates an error has been detected in the engine or transmission management system. Turning the engine off and restarting is able to reset the PCM.

Get a free scan done at Autozone and let me know the EXACT trouble codes so I can get the necessary information and advise accordingly.
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)
Tiny
KYLETALIAFERRO
  • MEMBER
  • 4 POSTS
My CEL is not on anymore. Can I still go get the codes or do I have to wait till this pro lem happens again
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Thursday, July 9th, 2020 AT 12:15 PM (Merged)

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