Question about 2000 Hyundai Sonata

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2000 sonata gls v6, car stays in first gear until about 2300 rpm

Then it violently shifts into 3rd overdrive making a loud hiss noise. then the vehicle is stuck in 3rd o/d until ignition is turned off???

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  • Anonymous Mar 29, 2014

    Shifts into low gear and stays until you shut the car off to reset it

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  • 3 Answers

Its a sensor on the transmission....had mine replaced 3 times.

Posted on Jan 07, 2009

  • mcdemers Jan 07, 2009

    Did not have it fixed at hyundai...brought it to a transmission shop that I trust and it didn't cost much, I think under $200 or even less.

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1995 chevy regular cab 4.3l v6 2wd wont go into overdrive


Sounds like it is stuck in second gear. Overdrive only drops rpm by a couple hundred. In third gears you should still be less than 3,000 rpm.

Second gear is a default gear when the transmission is in limp mode. Is the check engine light on? Does it shift if you manual shift through the gears with the gear selector?

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O2 sensor schematics


The step by step procedure of changing O2 sensor in 2000 Hyundai Sonata GLS can be found in the following link:

http://www.ehow.com/how_7211340_do-sonata-gls-oxygen-sensor_.html

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My 1999 ford expidition sounds like its shifting in overdrive when i reach about 40 miles per hour, the engine gets loud sounds a jet taking off.


You have it backwards

What you hear is engine noise from
higher rpm, because your trans is not
upshifting, as a result of your input on
the gas pedal

You need to have a trans or repair shop find out why
you have a delayed or no shift condition

When you get to 4th or 5th gear (overdrive) you also
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2003 toyota echo when shifting above 45 mph makes a loud high rpm noise especially on the highway


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Can you count the number of shifts ?
2nd speed at 10 - 3rd speed at 20 - lockup and overdrive at 40 ?
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I just purchased it today. The RPM's goes up to 4


You'll want to doublecheck & make sure the Overdrive is turned on. That's a high rpm for 55, even high I believe for Interstate cruising at 65-70.

Possibly get back to the dealer immediately if it's not the Overdrive switch.

There are issues with some models that concern the RPM staying around 4,000 even at idle & under the right circumstances, a transmission won't shift as it should based upon engine & driving signals that the Trans computer uses to determine when to shift.

Check your fluid first & remember, Overdrive doesn't work until the fluid reaches a certain temperature.

good luck

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2 Answers

3rd gear help please!


I have a 2002 Hyundai Sonata and I had the same problem. But mine would always shift into 3rd gear and STAY there until I turned the car off. I took it to a Hyundai dealer and he had to rewire a speed sensor on top of the transmission. Apparently a little animal got up in that tight little spot and gnawed on my sensor wires. The car has run fine since. To make a long story short, it might be your speed sensor on your transmission.

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1 Answer

2000 Nissan Maxima sounds like its not shifting into 3rd gear


What do you mean by loud... Loud where??? If noise is from engine, make sure that the mechanical fan clutch is not "locked" (it's supposed to freewheel when cold... if it does not, it will "roar" when driving.

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2000 es300 lexus auto w overdrive button overdrive 4th gear not work


There isn't anything wrong with your car. This is perfectly normal. I have a 2000 ES300 as well as other people that I know and it operates in the same way. Overdrive doesn't mean the same thing for every car or transmission. In our case overdrive is simply a reference to the top gear which is 4th gear. When you switch overdrive off(which is depressing the button causing the O/D OFF dash light to illuminate,) the highest gear becomes 3rd because you turned 4th gear or overdrive off. The application scenario for this is usually mountainous terrain where a lot of uphill driving makes it more feasible not to up shift into 4th gear while ascending and descending. It will not switch back to overdrive or 4th gear until you re-engage it by turning the overdrive back on or repressing the button. Again, when the O/D OFF dash light is illuminated, overdrive which is 4th gear is off and the highest gear will then become 3rd. It will never shift into 4th gear while this light is illuminated or overdrive is off. When you press the button and the O/D OFF dash light is NOT illuminated overdrive is on and therefore it will shift into 4th gear as usual. This applies to all 97-2001 ES300's and probably any other car you drive tat exhibits this same type of change when overdrive is turned off.

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