Question about 2001 Hyundai Elantra

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Transmission on my 2001 Hyundai Elantra GLS

It most of the time shifts fine when I first start out, and sometimes the "check engine" light will not be on. But it seems that after the engine gets warm (a few miles) it will, on it's own, down shift into 2nd gear and the engine light will come back on. I can at that time turn the key off and back on and at first the transmission will shift back to 3rd and sometimes stay in the proper gear but most of the time it repeat what I described before. I've noticed an rpm change just before it happens. I would describe it as a vacuum discharge or leak problem. Please help me!

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  • Anonymous Mar 27, 2014

    When the car shifts from first to second gear, it seems like it slips. We just had the transmission replaced and it still does it.The owner of the repair shop said the mechanic that put the new transmission in said that he noticed the "battery" leaking but didn't replace it. So tomorrow we are bring it back to have the "battery" checked. I didn't know transmissions had a battery. Is there a battery in the transmission?

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Your shifts correctly, as your driving it downshifts and stay stuck at that gear when u stop and try to take off but intell u turn off your car and restart it it shifts correctly intell a few mins later. i am thinking that is a speed sensor (out signal problem) mounted on top of your transmission next to the battery tray, you will see couple of cable linkages next to it ...

Posted on Nov 03, 2008

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